Mulone,
> I'm porting an application from Oracle Spatial to PostGIS.
> In particular I've come across this code in an INSERT statment:
>
> SDO_CS.VIEWPORT_TRANSFORM(
> MDSYS.SDO_GEOMETRY(2003,NULL,NULL,MDSYS.SDO_ELEM_INFO_ARRAY(1,1003,3) --
> rectangle
> ,MDSYS.SDO_ORDINATE_ARRAY("+topleftlat+", "+topleftlon+",
> "+bottomrightlat+", "+bottomrightlon+")),null)
>
> I understand this loads a rectangle in 2 points.
> I've written this postGIS code:
>
> GeomFromText('POLYGON("+topleftlat+" "+topleftlon+" "+bottomrightlat+"
> "+bottomrightlon+"))', -1)
>
> Obviously it doesn't work yet. Is this the right direction? Is there a way
> to store rectangles in postGIS in a similar fashion?
See the PostGIS manual (I have slightly modified the relevant entry):
SELECT addGeometryColumn('myschema','mytable','bbox','4326','GEOMETRY','2');
UPDATE mytable set bbox =
ST_MakeBox2D(ST_MakePoint(bottomrightlon,bottomrightlat),
ST_MakePoint(topleftlon, topleftlat))
Note that in PostGIS and Oracle X = Longitude and Y = Latitude
Hope this helps
regards
Simon
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