PostGIS is an extension for the PostgreSQL object-relational database that adds support for geographic objects.

learn more… | top users | synonyms

0
votes
1answer
181 views

What should I start with WebGis Mapserver?

I'm not native English Speaker and I'm a graduated student who want to have a master degree in software engineering. I have a thesis relative with "Build a WebGis for air pollution in Vietnam's ...
0
votes
2answers
119 views

Manually add a new point to PostGIS table [duplicate]

I did accidently delete a table row - or well, in fact a whole subway station. My attempt to solve the problem was this PostGIS function: ST_GeomFromText('POINT(coordinates)') But then PostgreSQL ...
0
votes
2answers
789 views

QGIS: using postgis can I define a layer using sql?

I have a vector layer (call it master) that is stored in postgis and consists of a number of line segments. I also have a collection of sub layers that consist of subsets of the master layer. I can ...
0
votes
1answer
111 views

How to find features within a distance? [duplicate]

I insert the values from lat/long into the points. Those users move around and send me new Lat/long and of course , I made an update of the position. I need to find people that are in a distance ...
0
votes
0answers
471 views

why preview image is blank for ImageMosaicJDBC (postgis raster) layer?

I follow http://docs.geotools.org/latest/userguide/library/coverage/pgraster.html to publish a ImageMosaicJDBC layer in geoserver. the layer seems published ok and saved, but the preview of this layer ...
0
votes
1answer
386 views

How to insert non-spatial data through WFS-T insert?

When i perform wfs-t insert operation using postgis database only spatial data and primary key gets inserted. Can anyone point me to some examples in which attribute data are also inserted along ...
0
votes
0answers
484 views

How to add ECW support to GDAL bundled with PostGIS Windows

I'm currently trying the new raster functionalities of PostGIS 2.0 and I successfully imported some GeoTIFF file into PostGIS (although it only find one band so it's all black and white for some ...
-2
votes
1answer
274 views

QGIS and Python - create line with multiple points in postgis [closed]

How can I create a line, with Python functions, with many points that are records in Postgis? Thank you
-2
votes
1answer
464 views

Postgis error on select all intersetcs of a polygon [closed]

i can get all polygon on intersects this:-7.9245860488441 -37.122384500713,-7.9245860488441 -37.11904223938,-7.9233955716106 -37.1187601948 SELECT * FROM propriedades WHERE ST_Intersects( ...