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Informations about the package wkb-parser
creof/wkb-parser
Parser library for 2D, 3D, and 4D Open Geospatial Consortium (OGC) WKB or PostGIS EWKB spatial object data.
Usage
There are two use patterns for the parser. The value to be parsed can be passed into the constructor, then parse() called on the returned object:
If many values need to be parsed, a single instance can be used:
Input value
Encoding
The parser currently supports 3 WKB encodings:
- OGC v1.1
- OGC v1.2
- PostGIS EWKB
Format
The parser supports a number of input formats:
- Binary string (as returned from database or )
- Bare hexadecimal text string ()
- Hexadecimal test string prepended with , , , or (, etc.)
Return
The parser will return an array with the keys , , , and .
- string, the uppercase spatial object type (, , etc.) without any dimension.
- array, contains integer or float values for points, nested arrays containing these based on spatial object type, or empty array for EMPTY geometry.
- integer, the SRID if present in EWKB value, otherwise.
- string, will contain , , or for the respective 3D and 4D objects, otherwise.
Exceptions
The and will throw exceptions implementing interface .
References
- PostGIS EWKB - https://github.com/postgis/postgis/blob/svn-trunk/doc/ZMSgeoms.txt
- OGC Simple Feature Access, Part 1 - http://www.opengeospatial.org/standards/sfa
- OGC Simple Feature Access, Part 2 - http://www.opengeospatial.org/standards/sfs
All versions of wkb-parser with dependencies
ext-spl Version *