mapscript.projectionObj¶
- class mapscript.projectionObj(proj4: char)¶
The PROJECTION object MapServer’s Maps and Layers have Projection attributes, and these are C projectionObj structures, but are not directly exposed by the mapscript module
Overview
The pointObj has the following relationships:
Attributes
generation_number
unsigned short immutable To be incremented when the content of the object changes, so that a reprojector can be invalidated
numargs
int immutable Actual number of projection args
thisown
The membership flag
wellknownprojection
int One of
wkp_none 0
,wkp_lonlat 1
, orwkp_gmerc 2
Methods
- __init__(proj4: char)[Quellcode]¶
Create new instance of projectionObj. Input parameter proj4 is a PROJ definition string such as ‚init=EPSG:4269‘
- getUnits() int [Quellcode]¶
Returns the units of a projection object. Returns -1 on error.
- setWKTProjection(wkt: char) int [Quellcode]¶
Update the projectionObj using an OGC WKT definition Returns
MS_SUCCESS
orMS_FAILURE