Tagged Questions

3
votes
2answers
98 views

Is there any efficient way to convert Geojson to WKT?

I want to use ST_GeomFromText() to load vector data to PostGIS. However, I don't know how to convert from Geojson type to WKT. N.B. I know I can use OGR2OGR to upload the geojson directly, but I just ...
0
votes
1answer
42 views

How can I find the SRID from the WKT out of a GRIB file?

I have a grib2 file which I'm trying to import into PostGIS 2.0 Raster and process. Trouble is, I can't figure out what the SRID is supposed to be, or one close enough for government work. Running ...
3
votes
4answers
155 views

converting oracle geometry to postgis with 3d data (wkt?)

I am converting Oracle spatial database to postgis. Most of of the spatial data is 2.5d. Meaning we have a Z-coordinate which indicates the depth/height of the element compared to soil level. Getting ...
1
vote
1answer
93 views

How can I Transfer mysql wkt directly into a postgis table?

I have wkt geometry data in mysql stored in blob format. I need to get this data into a postgis db and am looking for the quickest-easiest way to do it. I have managed to select the data "ASTEXT" but ...
1
vote
1answer
114 views

What are AGF Files, how do we put them in PostGIS?

I came across term which says AGF, after Googling I found its Autodesk Geo Files, But some other say, Atlas Geo Files, Which one of them is right. I also came to know that It is an extension to WKT ...
7
votes
1answer
895 views

Help with PostGIS polygon geometry - non-closed rings

I've picked up a copy of the super-wicked book 'Python Geospatial Development' by Erik Westra (Amazon link), and I'm working through it. Currently, it's teaching me to load GSHHS coastline data from a ...