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Results tagged with open-source-gis
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user 960
Software for which the original source code is made freely available and may be redistributed with or without modification.
64
votes
Accepted
What are the FOSS equivalents to these ArcGIS products?
To store the data, the first two alternatives to mention are PostGIS and SpatiaLite.
SpatiaLite is a SQLite database with spatial capabilities which
means it is file based, compact, and fast.
PostGI …
- 13.3k
6
votes
Alternatives to Network Analyst
spatiaite has routing capabiliies with a GUI. I have never tried it.
http://www.gaia-gis.it/spatialite/spatialite-network-2.3.1.html
- 13.3k
5
votes
Accepted
Seeking highly customizable GIS platform?
I am not experienced enough to give a give an answer from very many aspects, but...
I did my first things in GIS in ArcView 3.x writing in Avenue. I really liked the speed and possibilities. Then I ha …
- 13.3k
3
votes
Remove Duplicate Polygons Using Open Source Tools
This is what I use to do in those cases.
As I understand it you will have to do a manual check to decide which one has the right attribute. Then I use to do it in two steps. First I make a table or a …
- 13.3k
3
votes
Calculating polygon length and width using open source GIS?
FWIW, in Postgis is a function since 1.5, ST_Longestline that returns the longestline between two geometries. If you feed that function with the same geometry twice instead of two different, you will …
- 13.3k
3
votes
What is spatial query tool for laymen?
You say that you have a spatial representation of the neigborhoods but the crime data is just addresses.
there is to ways to connect the crimes to the neighborhoods.
get a list of all addresses in …
- 13.3k
2
votes
How to bring polygons closer to a point?
making the polygons bigger should give the desired effect.
http://postgis.net/docs/manual-1.5/ST_Scale.html
/Nicklas
- 13.3k
2
votes
3D snapping in open source platforms
First, I don't know if any open source desktop gis is capable of 3d-snapping, but the wonderful thing about open source is that you can always fix it yourself or get someone else to fix it.
Use some …
- 13.3k