SPATIAL DATA
TRANSFER STANDARD
PART 3
ISO 8211 Encoding
1.1 Purpose of ISO 8211 Encoding
The ISO 82111 encoding provides a representation of a Spatial Data Transfer Standard (SDTS) file set in a standardized method enabling the file set to be exported to or imported from different media by general purpose ISO 8211 software.
This encoding was selected with the following objectives:
1.3 Relationship to Other Standards
ISO 8211 is a general purpose, mediainterchange standard whose variable length records may be written on any medium that is able to accept them, including communications lines. In order to promote transfer, the user is advised to employ media for which volume and file structure standards exist as well as widespread implementations. The specific requirements for currently standardized media are given in section 10.
The annexes do not form an integral part of the standard but are added to provide additional information and explanation.
2 Scope and Field of Application
This part of the standard specifies an encoding of an SDTS file set in ISO 8211 and on standardized media.
This part of the standard applies to all ISO 8211 encodings of part 1 of this standard and to user extensions (see part 3, annex A) of this standard.
When any of the standards cited in this section is superseded by an approved revision, the revision shall apply.
ANSI X3.122-1986, Computer Graphics Metafile (CGM), FIPSPUB 128, 16 Mar 1987.
ANSI X3.27National Standard for File Structure and Labelling of Magnetic Tapes for Information Interchange (ISO 1001)
ANSI/ISO 4341National Standard for Magnetic Tape Cassette and Cartridge Labelling and File Structure for Information Interchange
ANSI/ISO 8211National Standard for Information Processing for a Data Descriptive file for Information Interchange (also FIPS 123)
ISO 6093Processing for Representation of Numeric Values in Character Strings for Information Interchange
ISO 9293and File Structure of Flexible Disk Cartridges for Information Interchange
ISO 9660and File Structure of CD-ROM for Information Interchange
The terms used in this part of the standard are limited to those terms in common usage, or defined in part 1 or part 2, or those found in the cited ISO 8211 document.
The methodology of this part is to define ISO 8211 constructs which, for the purpose of transfer, accept the logical constructs of part 1 of the standard and preserve their meaning. Where possible, a correspondence is maintained between the module subfields and fields of part 1 and the ISO 8211 subfields and fields maintaining both identification and order when required.
The content and size of a transfer determine what fields are present and how they are collected into records and the records into files. Part 1 allows the user considerable freedom to structure records and files as needed and this part does likewise.
Table 1, in section 6, contains the specification for the ISO 8211 encoding of all module fields defined in part 1, section 5. The constructs of table 1 are related to the logical constructs of part 1 by section references, e.g., (see part 1, 5.d..), and by the following nomenclature equivalents:
Part 1 Table 1(1) Module Subfield Subfield/Element Subfield Name/ Label Mnemonic Module Field Field Field Name Name Field Mnemonic Tag Domain Data Type/Format (1) ISO 8211 nomenclature
The identification nomenclature of part 1 has been used for most of the corresponding constructions of this part. The mnemonic for a module field becomes an ISO 8211 tag and the mnemonic for a subfield becomes an ISO 8211 label. Table 1 specifies any exceptions to this practice. The field names are the corresponding names in part 1. Specifications for the substantive contents and semantics of the user data subfields corresponding to the tags and labels are found in parts 1 and 2.
The following is a concordance relating the ISO 8211 data types of this Part to the data types and domains of part 1, section 4.2.1.
Generic ISO 8211 Part 1Type Data Type Data Type(s); Domain
Text A A; Graphic characters, Alphanumeric, Alphabetic
Integer I I; Integer
Real, fixed R R; Real
Real, float S S
Logical C C
Binary B B, BUI, BIdd, BUdd, BFPdd; Binary
The following domains may result in any one of the ISO 8211 data types depending on their use: Allowable values, Standard code sets and Standard field where domain is defined in Data Dictionary.
This section specifies the allowable subset of tags, names, labels, formats and other control information necessary to the transfer of spatial data. It specifies the limits allowed users for those ISO 8211 parameters that are permitted to vary such that transfer may be accomplished. The specifications for several media are also provided.
Note:Annex A suggests methods by which private agreements can extend the standard within the general specifications of ISO 8211 in order that the user can, by private agreement, transfer data not anticipated by this standard in a manner that does not conflict with this standard.
6.1 Specifications of ISO 8211 Constructs
Table 1 specifies the ISO 8211 tags, control fields, names, labels and formats reserved by this standard for the transfer of a set of complete modules as single or multiple files.
The field controls in table 1 are based on the following rule. An ISO 8211 vector data structure (1x00) is used for all primary fields and other fields of part 1 that do not repeat within a module record. An ISO 8211 array data structure (2x00) is used for fields that may repeat within a module record. Alternatives to the field controls of table 1 are specified in 6.4.1.
6.1.1 Notational Conventions of Table 1
The contents of table 1 are formatted as follows:Tag st00fuName& (See part 1, section reference) [n]|[m,n] Label& to next line as necessary Format; where: Tag is a four character ISO 8211 tag st00fu are the ISO 8211 field controls (6 bytes) where: s is the data structure code t is the data type code 00 are required characters f is the printable graphic for the field terminator u is the printable graphic for unit terminator
Note: The printable graphics ";" and "&" at other locations in table 1 represent FT(1/14) and UT(1/15), the required delimiters of the data description subfields.
Name& is the ISO 8211 name and "&" represents its delimiter[ ] signifies that no labels are specified
[n] signifies n subfield elements of an n
[m,n] signifies the number of elements in a two dimensional array; often an n, repeating m times
Where n is not explicitly specified, it is determined by the number of items in the user's n.
Where m is not explicitly specified, the field is a repeating nwhose first extent is determined from the data in the ISO 8211 field.
Label&
is an ISO 8211 vector label or Cartesian label and "&" represents its delimiter
A vector label identifies the components of an nand has the form, lab1!lab2!...labn.
A Cartesian label identifies the columns of a repeating table and has the form, *col1!col2!...coln.
Format;
is the ISO 8211 format control and ";" represents its delimiter.
When explicitly specified for a subfield, the ISO 8211 data type format code (i.e., A, I, R, S, C, B) is given.
The formats of subfields with user delimiters or fixed extents will require
The presence of "z" implies that the data type must be supplied by the user from the list of allowed types.
See 6.1.3 (e) for format variations.
The presence of:
"lowercase" implies a user assigned name, label or data type code.
Solid lines, "______", group associated sets of tags and field descriptions that form a spatial data module (i.e., the associated fields lie between the solid lines). The primary field of the set is listed first and the secondary fields, if any, are listed after the primary field.
________________________________________________________________ Table 1
Specification of Tags, Field Controls, Names, Labels and Formats ________________________________________________________________ ISO 8211 File Control Field
________________________________________________________________ 0000 0000;&external file title& [] & ; Note: This field exists only in the ISO 8211 data descriptive record and contains a humanfile title ________________________________________________________________ ISO 8211 Record Identifier Field ________________________________________________________________ 0001 0100;&DDF RECORD IDENTIFIER& [] & ; ________________________________________________________________ Note: This field is required by ISO 8211 in each record and contains a unique identifier of a data record. It is not the SDTS record identifier, RCID. ________________________________________________________________ Global Information Modules (See part 1, 5.2) ________________________________________________________________ IDEN 1600;&IDENTIFICATION&(See part 1, 5.2.1.1) [15] MODN!RCID!STID!STVS!DOCU!PRID!PRVS!PDOC! TITL!DAID!DAST!MPDT!DCDT!SCAL!COMT& (A,I,11A,I,A); CONF 1600;&CONFORMANCE&(See part 1, 5.2.1.2) [6] FFYN!VGYN!GTYN!RCYN!EXSP!FTLV& (4A,2I); ________________________________________________________________ ATID 2600;&ATTRIBUTE ID&
[m,2] *MODN!RCID&
(A,I);
________________________________________________________________ CATD 1600;&CATALOG/DIRECTORY&(See part 1, 5.2.2.1)
[10] MODN!RCID!NAME!TYPE!VOLM!FILE!RECD!EXTR!MVER!COMT&
(A,I,4A,z,3A); where z implies (I|A).
________________________________________________________________ CATX 1600;&CATALOG/CROSS-REFERENCE&(See part 1, 5.2.2.2)
[7] MODN!RCID!NAM1!TYP1!NAM2!TYP2!COMT&
(A,I,5A);
________________________________________________________________ CATS 1600;&CATALOG/SPATIAL DOMAIN&(See part 1, 5.2.2.3)
[10] MODN!RCID!NAME!TYPE!DOMN!MAP!THEM!AGOB!AGTP!COMT&
(A,I,8A);
________________________________________________________________ SCUR 1600;&SECURITY&(See part 1, 5.2.3)
[8] MODN!RCID!CLAS!CTRL!RLIS!RVDT!RVIS!COMT&
(A,I,6A);
FRID 2600;&Foreign ID&
[m,2] *MODN!RCID&
(A,I);
________________________________________________________________ IREF 1600;&INTERNAL SPATIAL REFERENCE& (See part 1, 5.2.4.1)
[17] MODN!RCID!COMT!SATP!XLBL!YLBL!HFMT!VFMT!
SFAX!SFAY!SFAZ!XORG!YORG!ZORG!XHRS!YHRS!VRES&
(A,I,6A,6R,z,z,z); where z implies (I|R|S)
________________________________________________________________ XREF 1600;&EXTERNAL SPATIAL REFERENCE& (See part 1, 5.2.4.2)
[10] MODN!RCID!COMT!RDOC!RSNM!VDAT!SDAT!HDAT!ZONE!PROJ&
(A,I,8A);
________________________________________________________________ ATID 1600;&ATTRIBUTE ID&
[2] MODN!RCID&
(A,I);
________________________________________________________________ RGIS 1600;®ISTRATION&(See part 1, 5.2.4.3)
[3] MODN!RCID!COMT&
(A,I,A);
EADS 2600;&EXTERNAL REFERENCE SPATIAL ADDRESS&
[m,3] *X!Y!Z&
(3z); where z implies (R|S).
IADS 2600;&INTERNAL REFERENCE SPATIAL ADDRESS&
[m,3] *X!Y!Z&
(3z); where z implies (I|R|S|B).
When B is specified for internal spatial address subfields, the ISO 8211 binary data type is extended by the HFMT (for X and Y) and VFMT (for Z) subfields of the associated Internal Spatial Reference module record.
________________________________________________________________ SPDM 1600;&SPATIAL DOMAIN&(See part 1, 5.2.5)
[5] MODN!RCID!DTYP!DSTP!COMT&
(A,I,3A);
DMSA 2600;&DOMAIN SPATIAL ADDRESS&
[m,3] *X!Y!Z&
(3z); where z implies (I|R|S|B).
When Domain Spatial Address = "INTERNAL" and when B is specified for internal spatial address subfields, the ISO 8211 binary data type is extended by the HFMT (for X and Y) and VFMT (for Z) subfields of the associated Internal Spatial Reference module record.
________________________________________________________________ DDDF 1600;&DATA DICTIONARY/DEFINITION&(See part 1, 5.2.6.1)
[8] MODN!RCID!EORA!EALB!SRCE!DFIN!AUTH!ADSC&
(A,I,6A);
________________________________________________________________ DDOM 1600;&DATA DICTIONARY/DOMAIN&(See part 1, 5.2.6.2)
[10] MODN!RCID!ATLB!AUTH!ATYP!ADVF!ADMU!RAVA!DVAL!DVDF&
(A,I,6A,z,A); z implies (A|I|R|S|C|B)
When B is specified the ISO 8211 binary data type may be extended by the Attribute Domain Value Format subfield, ADVF.
________________________________________________________________ DDSH 1600;&DATA DICTIONARY/SCHEMA&(See part 1, 5.2.6.3)
[12] MODN!RCID!NAME!TYPE!ETLB!EUTH!ATLB!AUTH!
FMT!UNIT!MXLN!KEY&
(A,I,8A,I,A);
________________________________________________________________ STAT 1600;&TRANSFER STATISTICS&(See part 1, 5.2.7)
[6] MODN!RCID!MNTF!MNRF!NREC!NSAD&
(A,I,2A,2I);
________________________________________________________________ Data Quality(See part 1, 5.3)
________________________________________________________________ DQHL 1600;&LINEAGE&(See part 1, 5.3.1)
[3] MODN!RCID!COMT&
(A,I,A);
ATID 2600;&ATTRIBUTE ID&
[m,2] *MODN!RCID&
(A,I);
FRID 2600;&FOREIGN ID&
[m,2] *MODN!RCID&
(A,I);
________________________________________________________________ DQPA 1600;&POSITIONAL ACCURACY&(See part 1, 5.3.2)
[3] MODN!RCID!COMT&
(A,I,A);
ATID 2600;&ATTRIBUTE ID&
[m,2] *MODN!RCID&
(A,I);
FRID 2600;&FOREIGN ID&
[m,2] *MODN!RCID&
(A,I);
________________________________________________________________ DQAA 1600;&ATTRIBUTE ACCURACY&(See part 1, 5.3.3)
[3] MODN!RCID!COMT&
(A,I,A);
ATID 2600;&ATTRIBUTE ID&
[m,2] *MODN!RCID&
(A,I);
FRID 2600;&FOREIGN ID&
[m,2] *MODN!RCID&
(A,I);
________________________________________________________________ DQLC 1600;&LOGICAL CONSISTENCY&(See part 1, 5.3.4)
[3] MODN!RCID!COMT&
(A,I,A);
ATID 2600;&ATTRIBUTE ID&
[m,2] *MODN!RCID&
(A,I);
FRID 2600;&FOREIGN ID&
[m,2] *MODN!RCID&
(A,I);
________________________________________________________________ DQCG 1600;&COMPLETENESS&(See part 1, 5.3.5)
[3] MODN!RCID!COMT&
(A,I,A);
ATID 2600;&ATTRIBUTE ID&
[m,2] *MODN!RCID&
(A,I);
FRID 2600;&FOREIGN ID&
[m,2] *MODN!RCID&
(A,I);
________________________________________________________________ ATPR 1600;&ATTRIBUTE PRIMARY&(See part 1, 5.4.1)
[2] MODN!RCID&
(A,I);
OBID 1600;&SPATIAL OBJECT ID&
[2] MODN!RCID&
(A,I);
ATTP 1x00;&PRIMARY ATTRIBUTES&
[n] attribute1!attribute2!...!attributen&
(z,z...); x is selected to be consistent with the data type
z implies (A|I|R|S|C|B)
________________________________________________________________ ATSC 1600;&ATTRIBUTE SECONDARY&(See part 1, 5.4.2)
[2] MODN!RCID&
(A,I);
ATTS 1x00;&SECONDARY ATTRIBUTES&
[n] attribute1!attribute2!...!attributen&
(z,z...); x is selected to be consistent with the data type
z implies (A|I|R|S|C|B)
________________________________________________________________ COMP 1600;&COMPOSITE&(See part 1, 5.5)
[3] MODN!RCID!OBRP&
(A,I,A);
ATID 2600;&ATTRIBUTE ID&
[m,2] *MODN!RCID&
(A,I);
FRID 2600;&FOREIGN ID&
[m,3] *MODN!RCID!USAG&
(A,I,A(1));
CPID 2600;&COMPOSITE ID&
[m,2] *MODN!RCID&
(A,I);
________________________________________________________________ Vector Modules(See part 1, 5.6)
________________________________________________________________ PNTS 1600;&POINT&(See part 1, 5.6.1)
[3] MODN!RCID!OBRP&
(A,I,A);
SADR 1600;&SPATIAL ADDRESS&
[3] X!Y!Z&
(3z); where z implies (I|R|S|B)
When B is specified for internal spatial address subfields, the ISO 8211 binary data type is extended by the HFMT (for X and Y) and VFMT (for Z) subfields of the associated Internal Spatial Reference module record.
ATID 2600;&ATTRIBUTE ID&
[m,2] *MODN!RCID&
(A,I);
LNID 2600;&LINE ID&
[m,3] *MODN!RCID!USAG&
(A,I,A(1));
ARID 2600;&AREA ID&
[m,2] *MODN!RCID&
(A,I);
CPID 2600;&COMPOSITE ID&
[m,2] *MODN!RCID&
(A,I);
RPID 2600;&REPRESENTATION MODULE ID&
[m,2] *MODN!RCID&
(A,I);
OSAD 2600;&ORIENTATION SPATIAL ADDRESS&
[m,3] *X!Y!Z&
(3z); where z implies (I|R|S|B)
When B is specified for internal spatial address subfields, the ISO 8211 binary data type is extended by the HFMT (for X and Y) and VFMT (for Z) subfields of the associated Internal Spatial Reference module record.
PAID 2600;&ATTRIBUTE PRIMARY FOREIGN ID&
[m,3] *MODN!RCID!ATLB&
(A,I,A);
SSAD 1600;&SYMBOL ORIENTATION SPATIAL ADDRESS&
[m,3] *X!Y!Z&
(3z); where z implies (I|R|S|B)
When B is specified for internal spatial address subfields, the ISO 8211 binary data type is extended by the HFMT (for X and Y) and VFMT (for Z) subfields of the associated Internal Spatial Reference module record.
________________________________________________________________ LINE 1600;&LINE&(See part 1, 5.6.2)
[3] MODN!RCID!OBRP&
(A,I,A);
ATID 2600;&ATTRIBUTE ID&
[m,2] *MODN!RCID&
(A,I);
PIDL 1600;&POLYGON ID LEFT&
[2] MODN!RCID&
(A,I);
PIDR 1600;&POLYGON ID RIGHT&
[2] MODN!RCID&,/B>
(A,I);
SNID 1600;&STARTNODE ID&
[2] MODN!RCID&
(A,I);
ENID 1600;&ENDNODE ID&
[2] MODN!RCID&
(A,I);
CCID 2600;&CHAIN COMPONENT ID&
[m,3] *MODN!RCID!USAG&
(A,I,A(1));
SADR 2600;&SPATIAL ADDRESS&
[m,3] *X!Y!Z&
(3z); where z implies (I|R|S|B)
When B is specified for internal spatial address subfields, the ISO 8211 binary data type is extended by the HFMT (for X and Y) and VFMT (for Z) subfields of the associated Internal Spatial Reference module record.
CPID 2600;&COMPOSITE ID&
[m,2] *MODN!RCID&
(A,I);
RPID 2600;&REPRESENTATION MODULE ID&
[m,2] *MODN!RCID&
(A,I);
________________________________________________________________ ARC 1600;&ARC&(See part 1, 5.6.3)
[5] MODN!RCID!OBRP!SRFC!ORDR&
(A,I,2A,I);
ARAD 2600;&ARC ADDRESS&
[3,3] CTAD!STAD!ENAD*X!Y!Z&
(3z); where z implies (I|R|S|B).
When B is specified for internal spatial address subfields, the ISO 8211 binary data type is extended by the HFMT (for X and Y) and VFMT (for Z) subfields of the associated Internal Spatial Reference module record.
ELAD 2600;&ELLIPSE ADDRESS&
[2,3] MJRA!MNRA*X!Y!Z&
(3z); where z implies (I|R|S|B).
When B is specified for internal spatial address subfields, the ISO 8211 binary data type is extended by the HFMT (for X and Y) and VFMT (for Z) subfields of the associated Internal Spatial Reference module record.
CADR 2600;&CURVE ADDRESS&
[m,3] *X!Y!Z&
(3z); where z implies (I|R|S|B)
When B is specified for internal spatial address subfields, the ISO 8211 binary data type is extended by the HFMT (for X and Y) and VFMT (for Z) subfields of the associated Internal Spatial Reference module record.
ATID 2600;&ATTRIBUTE ID&
[m,2] *MODN!RCID&
(A,I);
CPID 2600;&COMPOSITE ID&
[m,2] *MODN!RCID&
(A,I);
RPID 2600;&REPRESENTATION MODULE ID&
[m,2] *MODN!RCID&
(A,I);
________________________________________________________________ RING 1600;&RING&(See part 1, 5.6.4)
[3] MODN!RCID!OBRP&
(A,I,A);
LAID 2600;&LINE OR ARC FOREIGN ID&
[m,3] *MODN!RCID!USAG&
(A,I,A(1));
PLID 2600;&POLYGON ID&
[m,2] *MODN!RCID&
(A,I);
________________________________________________________________ POLY 2600;&POLYGON&(See part 1, 5.6.5)
[m,3] *MODN!RCID!OBRP&
(A,I,A);
ATID 2600;&ATTRIBUTE ID&
[m,2] *MODN!RCID&
(A,I);
RFID 2600;&RING ID&
[m,3] *MODN!RCID!USAG&
(A,I,A(1));
CHID 2600;&CHAIN ID&
[m,3] *MODN!RCID!USAG&
(A,I,A(1));
CPID 2600;&COMPOSITE ID&
[m,2] *MODN!RCID&
(A,I);
RPID 2600;&REPRESENTATION MODULE ID&
[m,2] *MODN!RCID&
(A,I);
________________________________________________________________ Raster Form(See part 1, 5.7)
________________________________________________________________ RSDF 1600;&RASTER DEFINITION&(See part 1, 5.7.2)
[21] MODN!RCID!OBRP!AQMD!AQDT!COMT!CMNM!DEFI!
CMPR!CMMD!RWXT!CLXT!SCOR!SCPT!TIDX!TIFT!TIDS
ALTN!FSCN!ASPR!NLAY&
(A,I,8A,2I,5A,I,A,R,I);
RATP 2600;&RASTER ATTRIBUTE ID&
[m,2] *MODN!RCID&
(A,I);
LDEF 2600;&LAYER DEFINITION&
[m,14] *LNAM!CODE!FMT!BMSK!NROW!NCOL!MINV!MAXV!
SORI!SOCI!RWOO!CLOO!INTR!COMT&
(3A,C,2I,2z,4I,2A); where z implies (A|I|R|S|C|B)
When B is specified the ISO 8211 binary data type may be extended by the Format subfield, FMT.
LATP 2600;&LAYER ATTRIBUTE ID&
[m,2] *MODN!RCID&
(A,I);
CPID 2600;&COMPOSITE ID&
[m,2] *MODN!RCID&
(A,I);
_________________________________________________________________ CELL 1600;&CELL&(See part 1, 5.7.3)
[6] MODN!RCID!NCEL!ROWI!COLI!TIND& (A,4I,z); where z implies (I|B)
When B is specified the ISO 8211 binary data type may be extended by the Tesseral Index Format subfield of the Raster Definition field, RSDF/TIFT.
SADR 1600;&SPATIAL ADDRESS&
[3] X!Y!Z&
(3z); where z implies (I|R|S|B)
When B is specified for internal spatial address subfields, the ISO 8211 binary data type is extended by the HFMT (for X and Y) and VFMT (for Z) subfields of the associated Internal Spatial Reference module record.
ATID 2600;&ATTRIBUTE ID&
[m,2] *MODN!RCID&
(A,I);
CVLS2600;&CELL VALUES&
[m,n]&
(z); where z implies (A|I|R|S|C|B)
Note:There are no labels for this field.
and the order of layers in RSDF/LDEF (see part 1, 5.7.1.1).
To reduce the number of implementation options, only one ISO 8211 CVLS field shall be used per ISO 8211 record.
Let the V(l,s,v) represent the organization of raster data into layers (l), swathes (s) and values (v), where the order of l and s can be interchanged depending on the Object Representation code (OBRP), and let the following symbol represent the iteration mechanisms available for storing raster data:
and let V(l:X,s:X,v:X) and V(s:X,l:X,v:X) represent the way in which the raster elements are combined with the iteration mechanisms, where X can be R,B,or #, then the following table denotes the relationships between object representation codes and possible raster organizations:
Raster Field CVLS Matrix
OBRP Organization Controls Dimension Comment
____ ____________ ________ _________ _______
GI V(l:R,s:#,v:#)2600 2 or 3 May not be practical
for large images
GI V(1:B,s:R,v:#) 1600 or 1 or 2 For general swath
2600
GJ V(s:R.1;#,v:#) 2600 2 or 3 For general swath
GK V(l:B,s:R,v:R) 1000 or 1 element Swath is a run, one
1600 single subfield
per CVLS field
GM - - - CVLS field not used
Whenever field controls of 2600 are used (for a 2 or 3 dimensional matrix), indicating the presence of a matrix in field's subfields, the array descriptor of ISO 8211, 6.2.4 (dope vector), shall be used to indicate the dimension and the extents of the dimension of the matrix.
________________________________________________________________ TEXT 1600;&TEXT REPRESENTATION&(See part 1, 5.8.1)
[14] MODN!RCID!BSCL!SSCL!LSCL!CLDX!CHHT!FTDX!TPTH!
UTXA!VTXA!CHEX!CHSP!SANG&
(A,5I,R,I,3A,3R);
________________________________________________________________ LNRP 1600;&LINE REPRESENTATION&(See part 1, 5.8.2)
[8] MODN!RCID!BSCL!SSCL!LSCL!CLDX!LTYP!LWTH&
(A,6I,R);
________________________________________________________________ SYRP 1600;&SYMBOL REPRESENTATION&(See part 1, 5.8.3)
[8] MODN!RCID!BSCL!SSCL!LSCL!CLDX!SMKR!MKSZ&
(A,6I,R);
________________________________________________________________ AFIL 1600;&AREA FILL REPRESENTATION&(See part 1, 5.8.4)
[9] MODN!RCID!BSCL!SSCL!LSCL!CLDX!FTYP!HIDX!PIDX&
(A,5I,A,2I);
________________________________________________________________ CLRX 1600;&COLOR INDEX&(See part 1, 5.8.5)
[6] MODN!RCID!RED!GREN!BLUE!BLCK&
(A,I,4R);
________________________________________________________________ FONT 1600;&FONT INDEX&(See part 1, 5.8.6)
[3] MODN!RCID!FNTN&
(A,I,z); where z implies I|A.
________________________________________________________________
6.1.2 Tags, Names and Labels
Data descriptive fields that have no specified labels may be augmented by userlabels for the identification of subfield data (see part 1, 5.4).
ISO 8211 does not allow duplicate tags in the same data descriptive record. When there is a need to have duplicate instances of the same generic field description of table 1 in the same data descriptive record, a tag is permitted to have an optional fifth character to make the tags for the two instances unique.
For example two attribute modules may be encoded in the same file with primary attribute tags:
STATE!COUNTY!LANDTYPE&
(A(2),A(15),I(1));
*VEG_TYPE!STOCKING_DATE&
(I(1),A(8));
The length of the tags within a file must be uniform. Thus when a fifth character is required for uniqueness for some tags, all tags must be five character tags. The use of the character "blank" is not recommended.
6.1.3 Permitted Variations in Field Controls and Formats
ISO 8211 field controls and formats shall conform to table 1 in the following manner:
Note:The printable graphics, ";" and "&" at other locations in table 1 represent FT(1/14) and UT(1/15).
6.1.4 Order of Data Items in Arrays
The order of data items in arrays must match the order of the ISO 8211 subfield labels. In ISO 8211 the subfield labels for an array are specified as the Cartesian product of vector labels. These labels when multiplied out correspond to the order of the data.
a!b!c!...!n*x!y!z = ax ay az bx by bz cx... nz
Notice that the labels in the last vector vary fastest in the sequence. Hence, the order of data in arrays is essentially row-order, with the rightmost label varying fastest.
When the first vector label is preceded by an asterisk (referred to as a null vector label in ISO 8211), then the Cartesian product of the vector labels can be thought of collectively as an n-tuple, and this n-tuple can be repeated in the data. In other words, this allows a single field to have multiple values corresponding to the same set of subfield labels.
If an array has a fixed dimension and extent in all data records and a Cartesian label is not required, the label may be replaced by an array descriptor comprising the dimension of the array followed by the extent of each vector, all separated by commas. For instance for a 2 dimensional array with 1024 rows and 512 columns, this descriptor will be: 2,1024,512. This descriptor is also referred to as a "dope vector."
See part 1, 4.1.3.3.5, 4.1.3.3.6 and 4.1.3.3.9.
This section specifies the methods by which the implementation permits the representation of missing data.
6.2.1 Fields Missing from Entire Files
When a data field is missing from all the data records of a file, the corresponding tag and data descriptive field may be omitted from the DDR of the file. (See part 1, 4.1.3.3.5)
6.2.2 Fields Missing from Specific Data Records
Missing fields may be indicated by omitting the tag from the data record directory and the field from user data area of the data record. (See part 1, 4.1.3.3.5)
6.2.3 Consistently Missing Data Subfields
When a labeled data subfield is consistently missing throughout a file in one of the tagged fields specified in table 1, then the subfield label corresponding to that data subfield may be omitted from the list of labels. The remaining labels shall occur in the order specified in table 1. (See part 1, 4.1.3.3.6.)
6.2.4 Intermittently Missing Data Subfields
When a data subfield is intermittently missing, a delimited data format shall be specified and a null data value comprising zero bytes shall be placed in the user data field followed by the appropriate delimiter. (See part 1, 4.1.3.3.9)
Foreign identifiers shall agree in data structure, data type and format with their references. The referenced record shall exist in the transfer file set.
6.4 Repeating Fields and Records
Where part 1 permits or requires repeated fields (within and (or) between module records and (or) between modules) a data structure control of 2 (array) may be used allowing multiple instances of the data nin the same field. This can reduce overhead and keep similar data in close proximity. Conversely, where table 1 specifies a structure control of 2, a structure control of 1 may be used, possibly requiring use of additional fields with the same tag. Regardless of the structure control, the option also exists to use additional fields with the same tag and (or) to place the data in a separate record. Changes to the specifications of table 1 are further subject to the restrictions of sections 7 and 8. The required ordering of fields shall always be preserved.
Note:It is advisable to keep both fields and records to a reasonable maximum length.
When a file contains records having repeated fixed formats, the user may drop the ISO 8211 leader/directory as specified in that standard.
Note:This is most applicable to those modules that are relational in structure and should be transparent to the user.
7 Assignment of Fields to Records and Files
This section assigns ISO 8211 field to ISO 8211 records and ISO 8211 records to ISO 8211 files. These assignments are determined by the specifications of part 1, table 3b with the further constraints of part 1, 4.1.3.4.1, section 7 of this part and ISO 8211 ordering constraints.
Each ISO 8211 record shall contain the ISO 8211 fields representing one and only one module record.
Each ISO 8211 file shall contain the ISO 8211 records representing the data of one and only one global module.
The ISO 8211 records containing data from modules not included in 7.1 may contain ISO 8211 fields from one or more modules subject to the general constraints of this section.
The ISO 8211 files containing data from modules not included in 7.1 may contain ISO 8211 records from one or more modules subject to the general constraints of this section.
Nothing in this section shall prevent the user form constructing multifiles if this is required by the volume of data and supported by the media standards. Multifiles shall be described in the Catalog/Directory module.
In the event the media do not support multi-volume files, any multiple files necessary to transfer large volumes of data shall be described in the Catalog/Directory module.
See part 1, 4.1.3.4.1.
A record may contain fields from more than one module. This section provides specifications for resolving and preventing conflicting associations of primary and secondary fields.
8.1 Restriction on Primary Fields in Level 2 Files
A record in a level 2 file shall not contain two or more primary fields having, in that record, a common secondary field or fields.
8.2 Primary and Secondary Fields in Level 3 Files
A record in a level 3 file may contain multiple primary fields without restriction. The logical association of primary fields with secondary fields shall be determined by the ISO 8211 inter tree structure (see ISO 8211 clauses 5.2.2 and 5.3.2).
In order to specify an arbitrary sequence of fields, a tree in which all fields are offspring of the ISO 8211 record identification field may be used.
Character representation of numeric data shall conform to ISO 6093 with the provision that FULL STOP, i.e., period, shall be used for the decimal mark. Numeric fields shall be right adjusted.
A date in a numeric field shall be entered in the format YYYYMMDD.
Binary data shall be represented in ISO 8211 bit fields and subfields. These bit fields shall conform to the specifications of ISO 8632-3. The ISO 8211 subfield widths shall be specified as B(n) and the additional X3.122 format information shall be placed in the applicable Data Dictionary/Domain or Data Dictionary/Schema or Internal Spatial Reference or Raster module.
The variable length records of ISO 8211 may be written on several media. This section specifies requirements for several standardized media.
The ISO 8211 logical records shall be written, blocked and spanned across the media physical records (blocks, sectors or packets) without further record demarcations. Any unused bytes of the last media record of a file shall be filled with CARET characters (5/14).
The ISO 8211 records shall be blocked and spanned into fixed length records of 2048 bytes in a blocksize of 2048 bytes conforming to level 2 of ANSI X3.27 and other applicable standards.
Diskettes shall be written in conformance to ISO 9293. The ISO 8211 records shall be blocked and spanned into sectors without record delimiters or control fields other than the record length provided in ISO 8211.
10.4 Magnetic Tape Cartridges and Cassettes
The ISO 8211 records shall be blocked and spanned into fixed length records of 2048 bytes in a blocksize of 2048 bytes conforming to level 2 of ANSI/ISO 4341 and other applicable standards.
10.5 Compact Disk Read Only Memory
The ISO 8211 records shall be blocked and spanned into fixed length media records of 2048 bytes in a Logical Block size of 2048 bytes with Record Format = 0 conforming to level 1 of ISO 9660 and other applicable standards.
A Spatial Data Transfer file set is in conformance with this standard when all data files, records and fields are in conformance with the applicable media standards, ISO 8211, the specifications of part 3, sections 6 to 10 of this standard, and the required specifications of parts 1 and 2 of this standard.
A single, simple README file, that informs the recipient of the nature of the file set, may be provided as the first file on a sequential media volume set and in the root directory of a random access media volume.
Informative Annex
A: Guidelines for Private Agreements
Private agreements limit the scope of transfer and are discouraged. Recurring needs for similar private agreements with a significant number of users should be referred to the maintenance organization of the standard.
The inclusion of ancillary data should be accomplished within the framework of ISO 8211 by defining private tags, names and labels. Inasmuch as ISO 8211 permits the association of tags within records, there is no need to compromise the tags and labels of this standard and conforming software. The following guidelines insure that no compromise will exist:
Informative Annex
B: Field and Subfield Names and Mnemonics
Nomenclature of Annex B
In this annex, the uppercase field tags and subfield labels are explicitly specified by part 3 of the standard as are the capitalized, lowercase field names. The lowercase subfield names are commentary from part 1. The required subfield labels, X, Y, Z, of spatial address fields are not tabulated.
This annex is an alphabetical listing of all the ISO 8211 tags with their associated field names. They are specified by the mnemonics and field names of part 1 section 5.
AFIL Area Fill RepresentationARAD Arc Address
ARC Arc
ARID Area ID
ATID Attribute ID
ATPR Attribute Primary
ATSC Attribute Secondary
ATTP Primary Attributes
ATTS Secondary Attributes
CADR Curve Address
CATD Catalog/Directory
CATS Catalog/Spatial Domain
CATX Catalog/Cross Reference
CCID Chain Component ID
CELL Cell
CHID Chain ID
CLRX Color Index
COMP Composite
CONF Conformance
CPID Composite ID
CVLS Cell Values
DDDF Data Dictionary/Definition
DDOM Data Dictionary/Domain
DDSH Data Dictionary/Schema
DMSA Domain Spatial Address
DQAA Attribute Accuracy
DQCG Completeness
DQHL Lineage
DQLC Logical Consistency
DQPA Positional Accuracy
EADS External Reference Spatial Address
ELAD Ellipse Address
ENID Endnode ID
FONT Font Index
FRID Foreign ID
IADS Internal Reference Spatial Address
IDEN Identification
IREF Internal Spatial Reference
LAID Line or Arc Foreign ID
LATP Layer Attribute ID
LDEF Layer Definition
LINE Line
LNID Line ID
LNRP Line representation
OBID Spatial Object ID
OSAD Orientation Spatial Address
PAID Primary Attribute Foreign ID
PIDL Polygon ID Left
PIDR Polygon ID Right
PLID Polygon ID
PNTS Point
POLY Polygon
RATP Raster Attribute ID
RFID Ring ID
RGIS Registration
RING Ring
RPID Representation Module ID
RSDF Raster Definition
SADR Spatial Address
SCUR Security
SNID Startnode ID
SPDM Spatial Domain
SSAD Symbol Orientation Spatial Address
STAT Transfer Statistics
SYRP Symbol Representation
TEXT Text Representation
XREF External Spatial Reference
B.2 Subfield Label and Subfield Name
This section is an alphabetical listing of all subfield labels and their associated subfield names. The labels are specified by the mnemonics of part 1 section 5 as are the subfield names.
ADMU Attribute Domain Value Measurement Unit
ADSC Attribute Authority Description
ADVF Attribute Domain Value Format
AGOB Aggregate Object
AGTP Aggregate Object Type
ALTN Number of Lines per Alternation
AQDT Acquisition Date
AQMD Acquisition Device/Method
ASPR Aspect Ratio
ATLB Attribute Label
ATYP Attribute Domain Type
AUTH Attribute Authority
BLCK Black Intensity Component
BLUE Blue Component
BMSK Bitmask
BSCL Base Scale
CHEX Character Expansion Factor
CHHT Character Height
CHSP Character Spacing
CLAS Security Class
CLDX Color Index
CLOO Column Offset Origin
CLXT Column Extent
CMMD Data Compression Method
CMNM Cell Module Name
CMPR Data Compression
CODE Cell Code
COLI Column Index
COMT Comment
CTAD Center Address
CTRL Control
CVAL Cell value
DAID Data ID
DAST Data Structure
DCDT Data Set Creation Date
DEFI Default Implementation
DFIN Definition
DOCU Standard Documentation Reference
DOMN Domain
DSTP Domain Spatial Address Type
DTYP Spatial Domain Type
DVAL Domain Value
DVDF Domain Value Definition
EALB Entity/Attribute Label
ENAD End Address
EORA Entity or Attribute
ETLB Entity Label
EUTH Entity Authority
EXSP External Spatial Reference
EXTR External
FFYN Composites
FILE File
FMT Format
FNTN Font
FSCN First Scan Direction
FTDX Font Index
FTLV Feature Level
FTYP Fill Style Type
GREN Green Component
GTYN Vector Topology
HDAT Horizontal Datum
HFMT Horizontal Component Format
HIDX Hatch Index
INTR Intracell Reference Location
KEY Key
LNAM Layer Name
LSCL Large Scale Maximum
LTYP Line Type
LWTH Line Width
MAP Map
MAXV Maximum Value
MINV Minimum Value
MJRA Conjugate Diameter PointAxis
MKSZ Marker Size
MNRA Conjugate Diameter PointAxis
MNRF Module Name Referred
MNTF Module Type Referred
MODN Module Name
MPDT Map Date
MVER Module Version
MXLN Maximum Subfield Length
NAM1 Name 1
NAM2 Name 2
NAME Name
NCEL Number of Cells
NCOL Number of Columns
NLAY Number of Layers
NREC Module Record Count
NROW Number of Rows
NSAD Spatial Address Count
OBRP Object Representation
ORDR Order
PDOC Profile Documentation Reference
PIDX Pattern Index
PRID Profile Identification
PROJ Projection
PRVS Profile Version
RAVA Range or Value
RCID Record ID
RCYN Raster
RDOC Reference Documentation
RECD Record
RED Red Component
RLIS Release Instructions
ROWI Row Index
RSNM Reference System Name
RVDT Review Date
RVIS Review Instructions
RWOO Row Offset Origin
RWXT Row Extent
SANG Skew Angle
SATP Spatial Address Type
SCAL Scale
SCOR Scan Origin
SCPT Scan Pattern
SDAT Sounding Datum
SFAX Scale Factor X
SFAY Scale Factor Y
SFAZ Scale Factor Z
SMKR Symbol Marker Type
SOCI Scan Origin Column
SORI Scan Origin Row
SRCE Source
SRFC Surface
SSCL Small Scale Minimum
STAD Start Address
STID Standard Identification
STVS Standard Version
THEM Theme
TIDS Tesseral Indexing Description
TIDX Tesseral Indexing
TIFT Tesseral Index Format
TIND Tesseral Index
TITL Title
TPTH Text Path
TYP1 Type 1
TYP2 Type 2
TYPE Type
UNIT Unit
USAG Usage Modifier
UTXA Horizontal Text Alignment
VDAT Vertical Datum
VFMT Vertical Component Format
VGYN Vector Geometry
VOLM Volume
VRES Vertical Resolution Component
VTXA Vertical Text Alignment
XHRS X Component of Horizontal Resolution
XLBL Spatial Address X Component Label
XORG X Origin
YHRS Y Component of Horizontal Resolution
YLBL Spatial Address Y Component Label
YORG Y Origin
ZONE Zone Number
ZORG Z Origin
This section is an alphabetical listing of ISO 8211 tags with field names and an ordered list of their associated subfield labels with their subfield names.
FIELDMNEMONIC
SUBFIELD
MNEMONIC FULL NAME
AFIL Area Fill Representation
MODN Module Name
RCID Record ID
BSCL Base Scale
SSCL Small Scale Minimum
LSCL Large Scale Maximum
CLDX Color Index
FTYP Fill Style Type
HIDX Hatch Index
PIDX Pattern Index
ARAD Arc Address
CTADCenter Address
STADStart Address
ENADEnd Address
ARC Arc
MODNModule Name
RCIDRecord ID
OBRPObject Representation
SRFCSurface
ORDROrder
ARID Area ID
MODNModule Name
RCIDRecord ID
ATID Attribute ID
MODNModule Name
RCIDRecord ID
ATPR Attribute Primary
MODNModule Name
RCIDRecord ID
ATSC Attribute Secondary
MODNModule Name
RCIDRecord ID
ATTP Primary Attributes
ATTS Secondary Attributes
CADR Curve Address
CATD Catalog/Directory
MODNModule Name
RCIDRecord ID
NAMEName
TYPEType
VOLMVolume
FILEFile
RECDRecord
EXTRExternal
MVERModule Version
COMTComment
CATS Catalog/Spatial Domain
MODNModule Name
RCIDRecord ID
NAMEName
TYPEType
DOMNDomain
MAP Map
THEMTheme
AGOBAggregate Object
AGTPAggregate Object Type
COMTComment
CATX Catalog/Cross Reference
MODNModule Name
RCIDRecord ID
NAM1Name 1
TYP1Type 1
NAM2Name 2
TYP2Type 2
COMTComment
CCID Chain Component ID
MODNModule Name
RCIDRecord ID
USAGUsage Modifier
CELL Cell
MODNModule Name
RCIDRecord ID
NCELNumber of Cells
ROWIRow Index
COLIColumn Index
TINDTesseral Index
CHID Chain ID
MODNModule Name
RCIDRecord ID
USAGUsage Modifier
CLRX Color Index
MODNModule Name
RCIDRecord ID
RED Red Component
GRENGreen Component
BLUEBlue Component
BLCKBlack Intensity Component
COMP Composite
MODNModule Name
RCIDRecord ID
OBRPObject Representation
CONF Conformance
FFYNComposites
VGYNVector Geometry
GTYNVector Topology
RCYNRaster
EXSPExternal Spatial Reference
FTLVFeature Level
CPID Composite ID
MODNModule Name
RCIDRecord ID
CVLS Cell Values
CVALCell value
DDDF Data Dictionary/Definition
MODNModule Name
RCIDRecord ID
EORAEntity or Attribute
EALBEntity/Attribute Label
SRCESource
DFINDefinition
AUTHAttribute Authority
ADSCAttribute Authority Description
DDOM Data Dictionary/Domain
MODNModule Name
RCIDRecord ID
ATLBAttribute Label
AUTHAttribute Authority
ATYPAttribute Domain Type
ADVFAttribute Domain Value Format
ADMUAttribute Domain Value Measurement Unit
RAVARange or Value
DVAL Domain Value
DVDF Domain Value Definition
DDSH Data Dictionary/Schema
MODNModule Name
RCID Record ID
NAMEName
TYPE Type
ETLB Entity Label
EUTH Entity Authority
ATLB Attribute Label
AUTH Attribute Authority
FMT Format
UNIT Unit
MXLNMaximum Subfield Length
KEY Key
DMSA Domain Spatial Address
DQAA Attribute Accuracy
MODNModule Name
RCID Record ID
COMTComment
DQCG Completeness
MODNModule Name
RCID Record ID
COMTComment
DQHL Lineage
MODNModule Name
RCID Record ID
COMTComment
DQLC Logical Consistency
MODNModule Name
RCID Record ID
COMTComment
DQPA Positional Accuracy
MODNModule Name
RCID Record ID
COMTComment
EADS External Reference Spatial Address
ELAD Ellipse Address
MJRA Conjugate Diameter PointAxis
MNRAConjugate Diameter PointAxis
ENID Endnode ID
MODNModule Name
RCID Record ID
FONT Font Index
MODNModule Name
RCID Record ID
FNTN Font
FRID Foreign ID
MODNModule Name
RCID Record ID
USAG Usage Modifier
IADS Internal Reference Spatial Address
IDEN Identification
MODNModule Name
RCID Record ID
STID Standard Identification
STVS Standard Version
DOCUStandard Documentation Reference
PRID Profile Identification
PRVS Profile Version
PDOCProfile Documentation Reference
TITL Title
DAID Data ID
DAST Data Structure
MPDT Map Date
DCDT Data Set Creation Date
SCAL Scale
COMTComment
IREF Internal Spatial Reference
MODNModule Name
RCID Record ID
COMTComment
SATP Spatial Address Type
XLBL Spatial Address X Component Label
YLBL Spatial Address Y Component Label
HFMTHorizontal Component Format
VFMT Vertical Component Format
SFAX Scale Factor X
SFAY Scale Factor Y
SFAZ Scale Factor Z
XORG X Origin
YORG Y Origin
ZORG Z Origin
XHRS X Component of Horizontal Resolution
YHRS Y Component of Horizontal Resolution
VRES Vertical Resolution Component
LAID Line or Arc Foreign ID
MODNModule Name
USAG Usage Modifier
RCID Record ID
LATP Layer Attribute ID
MODNModule Name
RCID Record ID
LDEF Layer Definition
LNAMLayer Name
CODE Cell Code
FMT Format
BMSKBitmask
NROWNumber of Rows
NCOL Number of Columns
MINV Minimum Value
MAXVMaximum Value
SORI Scan Origin Row
SOCI Scan Origin Column
RWOORow Offset Origin
CLOO Column Offset Origin
INTR Intracell Reference Location
COMTComment
LINE Line
MODNModule Name
RCID Record ID
OBRP Object Representation
LNID Line ID
MODNModule Name
RCID Record ID
USAG Usage Modifier
LNRP Line representation
MODNModule Name
RCID Record ID
BSCL Base Scale
SSCL Small Scale Minimum
LSCL Large Scale Maximum
CLDX Color Index
LTYP Line Type
LWTHLine Width
OBID Spatial Object ID
MODNModule Name
RCID Record ID
OSAD Orientation Spatial Address
PAID Primary Attribute Foreign ID
MODNModule Name
RCID Record ID
ATLBAttribute Label
PIDL Polygon ID Left
MODNModule Name
RCID Record ID
PIDR Polygon ID Right
MODNModule Name
RCID Record ID
PLID Polygon ID
MODNModule Name
RCID Record ID
PNTS Point
MODNModule Name
RCID Record ID
OBRP Object Representation
POLY Polygon
MODNModule Name
RCID Record ID
OBRP Object Representation
RATP Raster Attribute ID
MODNModule Name
RCID Record ID
RFID Ring ID
MODNModule Name
RCID Record ID
USAG Usage Modifier
RGIS Registration
MODNModule Name
RCID Record ID
COMTComment
RING Ring
MODNModule Name
RCID Record ID
OBRP Object Representation
RPID Representation Module ID
MODNModule Name
RCID Record ID
RSDF Raster Definition
MODNModule Name
RCID Record ID
OBRP Object Representation
AQMDAcquisition Device/Method
AQDT Acquisition Date
COMTComment
CMNMCell Module Name
DEFIDefault Implementation
CMPRData Compression
CMMDData Compression Method
RWXTRow Extent
CLXT Column Extent
SCORScan Origin
SCPT Scan Pattern
TIDXTesseral Indexing
TIFT Tesseral Index Format
TIDS Tesseral Indexing Description
ALTN Number of Lines per Alternation
FSCN First Scan Direction
ASPRAspect Ratio
NLAY Number of Layers
SADR Spatial Address
SCUR Security
MODNModule Name
RCID Record ID
CLAS Security Class
CTRL Control
RLIS Release Instructions
RVDT Review Date
RVIS Review Instructions
COMTComment
SNID Startnode ID
MODNModule Name
RCID Record ID
SPDM Spatial Domain
MODNModule Name
RCID Record ID
DTYP Spatial Domain Type
DSTP Domain Spatial Address Type
COMTComment
SSAD Symbol Orientation Spatial Address
STAT Transfer Statistics
MODNModule Name
RCID Record ID
MNTFModule Type Referred
MNRFModule Name Referred
NREC Module Record Count
NSAD Spatial Address Count
SYRP Symbol Representation
MODNModule Name
RCID Record ID
BSCL Base Scale
SSCL Small Scale Minimum
LSCL Large Scale Maximum
CLDX Color Index
SMKRSymbol Marker Type
MKSZ Marker Size
TEXT Text Representation
MODNModule Name
RCID Record ID
BSCL Base Scale
SSCL Small Scale Minimum
LSCL Large Scale Maximum
CLDX Color Index
CHHTCharacter Height
FTDX Font Index
TPTH Text Path
UTXA Horizontal Text Alignment
VTXA Vertical Text Alignment
CHEX Character Expansion Factor
CHSP Character Spacing
SANG Skew Angle
XREF External Spatial Reference
MODNModule Name
RCID Record ID
COMTComment
RDOC Reference Documentation
RSNMReference System Name
VDAT Vertical Datum
SDAT Sounding Datum
HDAT Horizontal Datum
ZONE Zone Number
PROJ Projection˙
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