[postgis-users] WKT format issues?

[Richard Taylor]

I am writting a parser for the WKT format in python (I'll write one for WKB 
format next).

I may be missing something but it appears that many of the WKT strings 
produced at present do not agree with the spec. The issue is around 
bracketing points e.g.:

Linestring comes out as:
SRID=128;LINESTRING(0 0,1 1,1 2)
But "should" be:
SRID=128;LINESTRING((0 0),(1 1),(1 2))

Multipoloygon as:
SRID=128;MULTIPOLYGON(((0 0 0,4 0 0,4 4 0,0 4 0,0 0 0),(1 1 0,2 1 0,2 2 0,1 2 
0,1 1 0)),((-1 -1 0,-1 -2 0,-2 -2 0,-2 -1 0,-1 -1 0)))
should be:
SRID=128;MULTIPOLYGON((((0 0 0),(4 0 0),(4 4 0),(0 4 0),(0 0 0)),((1 1 0),(2 1 
0),(2 2 0),(1 2 0),(1 1 0))),(((-1 -1 0),(-1 -2 0),(-2 -2 0),(-2 -1 0),(-1 -1 
0))))

The issue is there for POLYGON, MULTIPOINT and MULTILINESTRING as well.

Am I misreading the spec or is there a problem with the format that PostGIS is 
generating.

Forgive me if this has been discussed before, I am new to the list. I did a 
search and found some discussion about MULTIPOINT but not about the other 
types.

Regards

Richard


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