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Results tagged with postgis
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user 147823
PostGIS is an extension for the PostgreSQL object-relational database that adds support for geographic objects.
3
votes
1
answer
261
views
PostGIS: ST_Azimuth between Points in same Table
I've seen the questions and answers about ST_Azimuth, but didn't find a specific example for this case:
I need to calculate the azimuth from point id 1 to id 2, id 2 to id 3, id 3 to id 4, ...
Table …
- 63
3
votes
1
answer
3k
views
Correction of GPS-Track, snap to road (line, network)
GRASS in QGIS v.edit
-> problems of snapping not to the right road perists
D. in POSTGIS:
split track in segments of 10m (roads are mostly segments of 10m)
calculate Hausdorff distance:
CREATE TABLE … (see my previous question: PostGIS: ST_Azimuth between Points in same Table)
And now I found this: Matching segments of different lengths
How can I implement this in POSTGIS? …
- 63