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Results tagged with postgis
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user 600
PostGIS is an extension for the PostgreSQL object-relational database that adds support for geographic objects.
3
votes
Accepted
Error while installing PostGIS on ubuntu 12.04
You will have to disable the ubuntugis-unstable repository or the postgresql repository. Both will not work together.
- 6,249
0
votes
Migration from postgresql 8.4 to postgresql 9.0, postgis 1.5 involved
liblwgeom was renamed to postgis in version 1.4. Are you sure you are updating from 1.5? …
- 6,249
4
votes
making maps using Qt
Consider looking to merkaator. It is an editor for openstreetmap using qt: http://merkaartor.be/ and marble: http://edu.kde.org/marble/ which has a qt mapping widget
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0
votes
How to modify area polygon in postgres?
I suppose that you have a column area which contains old data. In that case you could: remove the column and calculate the area directly when you need it, or (if your dataset is not changing anymore) …
- 6,249
1
vote
After two buffers operations (+/-), why is the result file bigger than the original?
Try using the simplify algorithm in postgis. …
- 6,249
2
votes
What are the Pros and Cons of hstore data type in postgis?
I have no experience with it myself, but if you are interested in storing spatial data in such a database, you might want to search for spatial nosql. On post I found was eg:
https://stackoverflow.com …
- 6,249
7
votes
Accepted
Web mapping software for a huge raster time series?
EDIT: (Jan 13) I'm still seeking information on exactly how best to
store a 3 dimensional 16-bit integer BIP raster and be able to
efficiently query a single z-axis "column" of data. I don't wa …
- 6,249
1
vote
How should I implement a many-to-many relationship in a web mapping application?
There is a good example on how to implement a many-to many relationship just below your question: your post has different tags, which all relate to different posts. In a database you would implement t …
- 6,249