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2
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1answer
168 views

What methods exist for geohash of polygon?

GeoHash is an excellent method to code the latitude and longitude of a point into a string. It's concise, due to the use of numbers + letters, and the precision can be tuned adding characters at the ...
-1
votes
1answer
225 views

how to calculate area of triangles formed by delaunay triangulation

After applying delaunay triangulation 160 triangles were formed and i need to calculate the area of each triangles. Kindly help us please.
0
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0answers
72 views

Moving a Google Map Marker on a Mac

I have exact lat & long coordinates that I will enter and hit return in Google maps. When I do this it displays this point with a green marker on the map but I can not move this marker. I want to ...
0
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0answers
29 views

It is possible to invoke PostGIS internal function within new PostgreSQL user-defined function in C?

I have fuction f() and function ST_Area() for example. Can I invoke ST_Area() in the body of my function f()? Function f() is written in C. The code might look like this: #include "postgres.h" ...
0
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0answers
214 views

Issues when importing line shapefiles into NetworkX

Note that although I am using Python Console from within QGIS for this, I don't think it's a QGIS issue. Below is the difference of how NetworkX is dealing with 2 line layers created by the same ...