1
vote
0answers
75 views

Why is my linestring not valid ? was recorded from GPX file

I have a linestring that was built from points from GPX file. I've insert it to sql as geometry and when I try to run funcs on it (like STStartPoint ) I get error that line isn't valid and I need to ...
2
votes
1answer
109 views

postgis values within XYZ viewport in openlayers

I got this XYZ server where I get my maptiles. Now, when the user is at zoom level 1 ( closest). I want it to execute a command that gets the current viewport from the map and Queries my PostGIS ...
1
vote
0answers
146 views

What is the best way to create polygons on a map and download files associated with the polygon?

My client wants to build a tourist site and for that he wants a backoffice for the map and the ability to draw polygons on the map (that user can see). When the user clicks on a polygon, he gets a ...
2
votes
1answer
715 views

3D Building Generator Tool

I am using ArcGIS desktop 10 and I would like to change a 2D polygon into 3D building. Does anyone have any idea from where I can download the 3D building generator tool for ArcGIS Desktop? I read ...