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Results tagged with open-source-gis
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user 664
Software for which the original source code is made freely available and may be redistributed with or without modification.
16
votes
How to calculate most efficient route passing through all the houses in the world?
Often it is good to address the need that is stated rather than answering the question that was asked. I would like only to point out that there is a well-known parallel solution that neatly circumve …
- 70.2k
16
votes
Accepted
Fastest way to spatially join a point CSV with a polygon Shapefile
If "fastest" includes the amount of your time that is spent, the solution will depend on what software you are comfortable with and can use expeditiously. The following remarks consequently focus on …
- 70.2k
4
votes
Converting DEM into areas of "flatness", with arbitrary fill/cut to area ratio?
This problem has many different solutions: it needs further restrictions. After all, by choosing any value within the range of elevations in the dataset, the contour for that value will be "flat" (an …
- 70.2k
17
votes
How to calculate average slope in a grid?
You need to know something about the meaning, method of acquisition, and processing of the elevation measurements, because slope calculations are fairly sensitive to resolution. You will get lower av …
- 70.2k
38
votes
Accepted
Smoothing polygons in contour map?
Most methods to spline sequences of numbers will spline polygons. The trick is to make the splines "close up" smoothly at the endpoints. To do this, "wrap" the vertices around the ends. Then spline …
- 70.2k