Practical GIS

Precision problems of buffering

If you also have some differences between the buffering and the distance measurement methods, follow me during the investigation. If not, just read along. First, let's see the problematic geometries in context. I only have one; therefore, it is more trivial to find out the source of the problem:

The main roads are far enough from the feature; therefore, the nearest industrial area should be the cause. If we create a 500-meters buffer zone around the layer, we should see that the feature lies outside of the buffer zone. However, ST_Distance thought otherwise. What we can also see is that the buffer zones are ...