Version 2.0 of PostGIS brought a heavy set of new extensions for the PostgreSQL object-relational database, adding greater support for spatial objects.

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479 views

How to Load Relational Database Format Data into PostGIS?

I want to load some sample Relational Database Format Data to POSTGIS. Are there any tools or methods to do this?
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3answers
242 views

postgis under win 7 “on demand” not as a service

how do I install postgis2.0 under win 7 to run just on demand. I dont want to run it permanently as a service. Similary as the (nonspatial) mysql can be run on demand via the xampp-tools ...
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1answer
1k views

pgRouting: unable to execute routing_core.sql

I'm unable to execute the routing_core.sql, receiving following error. I'm using pgAdmin III, Windows 7, PostgreSQL 9.1, PostGIS 2.0. ERROR: could not load library "C:/Program ...
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2answers
307 views

Moving existing hard drive with PostGIS data directory to a new computer

I have a new computer that is replacing an old machine that has PostGIS installed. The old computer has a 2nd hard drive where the PostGIS data directory is stored. I want to move this drive over to ...
0
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1answer
416 views

How to use ST_Length?

I want to calculate the lenght of the line inside the polygon. If I do this: SELECT ST_Length(ST_Intersection(ST_Transform('SRID=3035;LINESTRING(4000000 3000000, ...
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1answer
436 views

Adding table from Postgis

While trying to import a table containing raster data in QGIS , Raster column is not being imported ... I am getting following messages: Database connection was successful , but the accessible ...
10
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1answer
936 views

How to get the length of a line inside a polygon

How can I get the length (brown marked part) of the "Road 7" inside the red polygon? My start: SELECT ST_Length(way) FROM lines WHERE road = "Road 7" AND ST_Intersects(line, polygon)? With that, ...
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0answers
102 views

Make a thumbnail of a raster in PostGIS

I'm fiddling around trying to create a thumbnail of a fairly large (originally 27MB) raster, chunked into 64x64 blocks. I've got the following and it works, quite well, but I'm wondering if there is a ...
4
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1answer
364 views

gdalinfo gives no georeferencing information for a PostGIS raster

I have a PostGIS raster dataset which I am trying to access via GDAL. I've had various problems with making this work, so thought I'd try running the gdalinfo command to check that GDAL can actually ...
3
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1answer
654 views

PostGIS 2.0 ST_Transform with Rasters cannot find custom SRID

I'm trying to calculate an average value in a buffer around a point. Given a raster in EPSG 4326 and a similar point, this is fine, except that the values will be skewed as they are not projected in ...
6
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1answer
3k views

PostGIS - 1.5 to 2.0 easy update

I have a PostGIS 1.5 database and want to update to 2.0. I read that because this is major release I have to follow the 'Hard update' procedure. However the spatial data I have is only test data so I ...
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1answer
128 views

How to select data inside a tile?

I have an OpenStreetMap PostGIS database and would like to select specific data (for example all shops) of each tile (on a defined zoomlevel) on the planet. Is this possible to achieve and if yes, ...
3
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1answer
940 views

remove duplicate points based on a specified distance

i have a table of points with each point acquired on a specified date, by a specified source, and having a measured value. i want to consider points as duplicates if they have the same date and if ...
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1answer
1k views

Nearest Neighbor problem in Postgis 2.0 using GIST Index (<-> function)

I'm trying to use Postgis 2.0 new function <-> (Geometry Distance Centroid) in order to calculate, for each row of my table (cosn1), the distance to the nearest polygon of the same class. I was ...
4
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1answer
2k views

How to design model in Django using GeoDjango?

I am using Postgresql 9.0 and PostGIS 2.0. I am using Django 1.3 and GeoDjango. I have a model with id, latitude, longitude and placename. All the places are in the USA. My requirement is following: ...
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1answer
622 views

Speed up pgRouting point_to_id using new <-> operator in PostGIS 2.0.0

The point_to_id function, which assigns a node id to a point based on existing nodes and tolerance, is using a query as follows: SELECT id, the_geom FROM vertices_tmp WHERE ...
2
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1answer
726 views

PostGIS 2.0 and Postgres 9.1: ST_Transform => failed to load NAD27-83 correction file (Windowsx 64)

after making a clean install with the latest stable release of postgis (2.0) i can't perform any transformations: SELECT ST_Transform(ST_SetSRID('BOX3D(2644033.2454124987 ...
18
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1answer
4k views

Comparison of geocoding solutions (such as Gisgraphy & PostGIS 2.0) [closed]

As I am sure many of you are aware, PostGIS has finally released Version 2.0 and included within this version they have also built a geocoder (see: http://postgis.net/docs/Extras.html). Although I ...
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2answers
2k views

Postgis 2.0 upgrade problem with postgres data?

I have a serious problem: on Wednesday, April 2 OpenSUSE 12.1 is updated, and the package was to update the PostGIS-a version 1.5.3 to 2.0.0. After this operation, Postgres does not display records. ...
11
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3answers
4k views

Intersecting a raster with a polygon using PostGIS - artefact error

I'm using PostGIS2.0 to do some raster/polygon intersections. I'm having difficulty understanding which operation I should use, and what the quickest way of performing this is. My problem is as ...
14
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4answers
11k views

Loading a raster into a PostGIS 2.0 database on Windows

I'm trying to figure out how to load a raster into a PostGIS2.0 database (I have asked previous questions on this topic here and here). I am trying to use the raster2pgsql.exe program provided with ...
6
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1answer
3k views

Loading a raster using QGIS into a PostGIS2.0 enabled database

Following on from my attempt to install a postgresql 9.1 db with postgis 2.0 on windows 7, I am trying to figure out how to load a raster. I have successfully loaded a shapefile, and am trying to do ...
0
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1answer
458 views

Unable to Make PostGIS 2.0 - file not found

I am struggling to get the latest trunk of PostGIS to install on a fresh Mac running Lion. I did install PostGIS 1.5.3-2 for Postgres 9.1 from [KyngChaos Mac OSX Installers][1]. This setup worked ...
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2answers
2k views

How to run two PostGIS versions in parallel on Windows?

I'm trying to understand how to install PostGIS2.0 on Windows7. The PostGIS site has the following suggestions: PostGIS Experimental Binaries PostGIS 2.0.0SVN Binaries with Raster, Topology ...