Tagged Questions
3
votes
2answers
120 views
Visualization of a big graph in 3D from postgresql/postgis
We have a graph in 3D in a PostgreSQL/PostGIS database. It contains something like 50'000 edges and 50'000 vertices, with x-y coordinates and floors.
We would like to visualize this graph with ...
5
votes
0answers
72 views
How to sample a 3D raster along a 3D path (or 4D raster along 4D path)?
I have a 3d raster dataset of atmospheric variables (lat x lon x altitude). I would like to sample this raster dataset along a 3d path.
Any idea how I can achieve this, preferable with qgis or ...
3
votes
0answers
116 views
Exporting 3D geometry from PostGIS 2.0
I have a table containing 3D geometry in a PostGIS 2.0 database (the geometry is of type LINESTRING Z).
I need to get the geometry out and into a DXF, DGN or 3D Shapefile. What is the easiest way to ...
7
votes
2answers
89 views
How do you treat partial 3d features in PostGIS?
We have features from survey data that contain partial 3d information.
The most common example would be a 2D LineString representing a road, that contains elevation information in certain points ...
3
votes
2answers
173 views
Invoke PostGIS functions outside of the database? Need to force 3D in GeoDjango
I'm looking to ensure that all geometries saved to the database are three-dimensional. It's easy enough to do with a call to the database,
select ST_Force_3D( ST_GeomFromText( blah blah ) )
...but ...
1
vote
1answer
219 views
PostGIS - table with 3d points with fast ordering by distance
I am pretty new to PostGIS and I am trying to solve the following problem.
I need a table with 3D points (x,y,z) that will contain around 1-10million points. I want to be able to efficiently ask the ...
13
votes
3answers
860 views
Visualization of 3D shapefiles with Mapserver and Postgis
I'm wondering is there a way to visualize 3d data with mapserver? 3D .shp files are in postgis database, and I already connected mapserver to database, but with simple layer in mapfile.
6
votes
1answer
238 views
Assign Z value to start & end of PostGIS line
I have a line table in my PostGIS database and a table with invert levels for the start and end of each line.
My goal is to create create 3D lines in my table, from my invert data. I know I can use ...
5
votes
1answer
233 views
Clarification of the “25D” option in ogr2ogr
[EDIT: In my original post, I had received an error that was based on a typo, so I scrapped that part of the question, but left the questions that still apply.]
In the ogr2ogr docs it says:
-nlt ...
8
votes
1answer
1k views
PostGIS 3D in Action
I was wondering if there is a website that showcases Openlayers and PostGIS 3D in Action
