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Jun 3 |
comment |
Creating nanoscale DEM with GDAL In a non-projected file, you would convert from pixels to distances via the dpi setting ("dots per inch"). If you have a task where GIS tools work better than CAD/analysis tools, I think you could always use the actual dpi value (which should be pretty high) and units of distance in any projection to make the distortion neglectably small. |
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May 6 |
comment |
uncaught typeerror: undefined is not a function Make sure your copy of OpenLayers has WMSGetFeatureInfo built-in. OpenLayers is a modular system, and not all the possible features are activated by default in every version/distribution. |
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May 6 |
comment |
Is there a way to identify and remove similar GPS tracks in PostGIS or ArcGIS? That should work a lot faster indeed. |
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May 3 |
comment |
Is there a way to identify and remove similar GPS tracks in PostGIS or ArcGIS? You can still compare the tracks segment by segment, increasing the index on track A until it passes the current index on track B, then increasing the index on B and repeat. |
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May 2 |
answered | Is there a way to identify and remove similar GPS tracks in PostGIS or ArcGIS? |
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Apr 22 |
awarded | Constituent |
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Apr 20 |
answered | Is there a public Web Map Tiling Service (WMTS) available? |
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Apr 18 |
awarded | Caucus |
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Feb 12 |
answered | Ogr2Ogr SQLite Geometry Functions |
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Feb 12 |
comment |
Ogr2Ogr SQLite Geometry Functions I can confirm BradHards - the spatialite extensions in the sqlite driver are optional. |
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Oct 8 |
answered | How to split OSM roads into individual segments at intersections? |
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Sep 26 |
comment |
How do you treat partial 3d features in PostGIS? A 0 z coordinate is not correct, and does not represent the same value as the data source. ST_Force_3D will not work for us. The idea is to be able to have a correct bidirectional mapping between the data source and our database. |
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Sep 25 |
asked | How do you treat partial 3d features in PostGIS? |
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Aug 7 |
answered | How to compare geometry in PostGiS? |
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Jul 30 |
awarded | Yearling |
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Jun 8 |
awarded | Constituent |
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Jun 8 |
awarded | Caucus |
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May 7 |
comment |
How to smooth the polygons in a contour map It seems to me that some of the artefacts are caused by repeating points, causing a corner in the curve. Do you maybe feed the function with the polygon definition without removing the duplicated start/end point? (Or actually, it might be the opposite, that Scipy.interpolate does not consider the curve a loop) |
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May 3 |
answered | Polymaps + D3+ Polyline with different width and color |
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May 3 |
comment |
Looking for collaborative webmapping projects Well, there is the obvious - the OpenStreetMap project. |
