[postgis-devel] Re: Patch for PostGis Envelope Bug

[Charlie Savage]

And here is an example of its use:

select asText(envelope('POINT(10 10)'::geometry)),
        asText(envelope('MULTIPOINT((10 10))'::geometry)),
        asText(envelope('MULTIPOINT((10 10), (20 20))'::geometry)),

        asText(envelope('LINESTRING(10 10, 50 50)'::geometry)),
        asText(envelope('MULTILINESTRING((10 10, 50 50))'::geometry)),
        asText(envelope('MULTILINESTRING((10 10, 50 50), (20 20, 70 
70))'::geometry)),

        asText(envelope('POLYGON((10 10, 50 50, 30 30, 20 20, 10 
10))'::geometry))


"POINT(10 10)";
"POINT(10 10)";
"POLYGON((10 10,10 20,20 20,20 10,10 10))";
"LINESTRING(10 10,50 50)";
"LINESTRING(10 10,50 50)";
"POLYGON((10 10,10 70,70 70,70 10,10 10))";
"POLYGON((10 10,10 50,50 50,50 10,10 10))"

Charlie


Charlie Savage wrote:
> Hi Paul,
> 
> Paul Ramsey wrote:
>> Applied to trunk. I don't see any way it can do harm.
> 
> Here is patch to the patch (thus it applies against the trunk).
> 
> It adds in support for returning a LineString if envelope is called on a 
> line string (thus making this similar to the  bbox to geom conversion 
> routines).
> 
> Also, it fixes a bug I introduced in the last version (not checking to 
> see if the deserialized geom should be freed).
> 
> Thanks,
> 
> Charlie
> 
> 
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