PostgreSQL is an open source object-relational database system.

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adding geometries to a source, target table for multiple rows in pgrouting

I am having an issue trying to perform the pgr_dijkstra algorithm and getting back a line in my table for multiple rows. I have a table that has a columns of source, target node id's but I cannot ...
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42 views

PostGis line geometry type

I am using postgresql9.3 and postgis2.1.I imported a shape file into my database. In that the_geom datatype is "LINESTRING" . Now i need a query to find the lines within a given radius for a ...
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202 views

Is it possible to get a binary geometry from PostGIS?

PostgreSQL (via C# Npgsql driver) returns geometry column (PostGIS) like a hex string (EWKB as I understand) for this query: SELECT ST_Transform(geometry, 4326) FROM myGeometries; Result (for ...
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110 views

Why does QGIS crash when my PostGIS table has a primary key?

Configuration: PostGIS Library: 2.0.3 GEOS: 3.3.8-CAPI-1.7.8 Proj: Rel. 4.8.0, 6 March 2012 PostgreSQL 9.2.2, compiled by VC++ build 1600, 64 bit, running on Win2012 server 64 bit QGIS 2.2.0 - 32 ...
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1answer
28 views

Access SQL database in postgres for routing

i am trying to access sql database in pgadminIII. Using postgres_fdw I am trying to connect. But I am struck in the middle..Following are the steps I followed CREATE EXTENSION postgres_fdw; CREATE ...
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126 views

Error importing shapefile into postgreSQL using shp2psql

I've tried this a few different ways and keep getting the same error. I have a shapefile currently in WGS84 UTM Zone 15 which is SRID 32615. I used the ArcMap multipart to singlepart tool to create a ...
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54 views

Batch join non-spatial csv to shape files

I have 173 point shape files from soil testing and 173 non spatial csv files with lab ressults (one csv for each shape file) that need joining. The files are located in a library with folders named ...
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1answer
124 views

How to calculate the track length of GPX files with PostGIS?

I am trying to calculate the length of a GPX track. The original GPS data looks like this: <?xml version='1.0' encoding='UTF-8' standalone='yes' ?> <gpx ...
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1answer
95 views

Using PostGIS functions in ArcGIS Desktop for Layer Definition Query?

I am connecting ArcGIS Desktop 10.2 to Postgis 2.0.3 with PostgreSQL 9.2.4. No SDE. I can load data with no problems and access the data in ArcMap. However I can't seem to use PostGIS functions within ...
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112 views

how to build and install pgrouting-2.0 on postgresql-9.3 on ubutntu 12.04 Lts precise?

I try to build following instructions from this link https://github.com/pgRouting/pgrouting after downloading from the github. I have done the cmake command and there is my error output: ...
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1answer
49 views

Install pgRouting on Postgres 9.1 and Win 32

I referred some documents on GIS-stackexchange and over internet regarding installation of pgRouting on Postgres v9.1 and windows 32. I am not getting the correct version of pgRouting to install. Can ...
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328 views

How to query OSM for all beaches facing west? - QGIS preferred

I want to identify all beaches on this planet (or a given subset of it) that are facing westwards (+/- 20-30 degrees). My idea is to use OSM as the data source. Extracting all polygons that have the ...
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2answers
229 views

Update database via osmosis and osm2pgsql too slow

I got a box with the current hardware config: CPU: Intel Xeon E3-1220 V2 3.1 GHz RAM: 10gb Hard Disk: Western Digital WD10EZRX SATA Hard Drive OS: Centos 6.5 64 bit DB: PostgreSQL 9.3.2 and ...
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1answer
92 views

PostgreSQL : how do I make this sum [closed]

I have this huge table with all the addresses of my country in it. Every house is an object, and there is a column for the streetname (or street ID) and a column for the housenumber. I want to make a ...
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2answers
72 views

QGIS Connection PostGIS and shapefile

I'm working on QGIS with a database created in PostGIS and a shapefile. Inside the database, I have geometry type data about location of some points, instead on the shapefile there some selected ...
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1answer
57 views

Get list of all tables in CartoDB account with SQL statement?

How can I get a list of all available tables in my own authenticated CartoDB account with a SQL statement? This returns null: SELECT table_name as t FROM information_schema.tables WHERE table_schema ...
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2answers
105 views

How to get the data type of each column from a postgis table

I need to get the column data types of all columns in a table, including the geometry types. What I wanted to know is if there is a function or SQL that gives something like this: column_name | ...
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52 views

Compute visibility graph on sphere

I have a PostGIS table with some polygons (stored using the geography data type). They represent regions on a spherical earth. For each pair of vertices chosen from among all the polygons, I want to ...
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163 views

Searching planet_osm_point by longitude and latitude

I used osm2pgsql to import data into my PostgreSQL database and it put gave me the following 4 tables, planet_osm_point, planet_osm_line, planet_osm_polygon and planet_osm_roads. I have looked at ...
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1answer
34 views

Only Draw Geometric Objects Above 8th Parallel North

I have many geometric objects (in both SRID:4326 - the_geom - and SRID:3857 - the_web_geom - in PostGIS extension tables of PostgreSQL), including country boundaries, for the country of Ghana and I ...
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1answer
37 views

Show raster data in WEB

I have downloaded Landsat8 image and use matlab to processing temperature and vegetation. Then I insert data into PostGIS. I used QGIS to display the results but i want show in web. How to display the ...
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52 views

Focal Mean of neighbors using ST_DWithin on points in PostGIS

I'm trying to calculate focal means on a grid of points in PostGIS. I know that a raster calculation would be more efficient, but I only need to run the algorithm once to get the data, so I don't ...
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2answers
63 views

How can I speed up these queries

I am trying to make some calculations using PostGIS and PostgreSQL. There are 3 important tables : wbn, wgo and wvb. These tables have about 500.000 objects in them (geometries). The problem is that ...
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38 views

PostGIS 3D Extrude function

I selected buildings from OSM (which represents my city). I insterted a new column 'height' and I filled with a random number exactly number 2, so every building have 2metres altitude. Buildings are ...
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1answer
37 views

How to get a distinct pair of column values based on minimum of another (computed) column?

I have two tables with point geo data, one (sfc_obs) with weather stations (names), one (smos_grid) with satellite pixels (dggs), and I'm trying to find which dgg is closest to each name using ...
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2answers
95 views

What index to use in this situation

I am working with 3 tables with 3 x 500 000 rows. There is one column that gives each object a unique ID (UIDN), there also is a column with the geom data (the_geom). There also are some other columns ...
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1answer
81 views

MS SQL Server 2012 to Postgresql

How to use MS SQL Server 2012 spatial database in postgresql using foreign data wrapper?
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143 views

Raster slightly displaced after exporting from PostGIS database

With the following queries I've exported a raster (GTiff) from my postgis database: 1.Creating a large object: WITH buffer AS ( SELECT id, ST_Buffer(geom,50) AS geom FROM ...
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1answer
78 views

3D functions with SFCGAL in PostGIS

I have this setup: "POSTGIS="2.1.2 r12389" GEOS="3.3.8-CAPI-1.7.8" PROJ="Rel. 4.8.0, 6 March 2012" GDAL="GDAL 1.9.2, released 2012/10/08" LIBXML="2.7.8" LIBJSON="UNKNOWN" TOPOLOGY RASTER" on ...
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2answers
89 views

What is the best way to take a WKB value in SQL Server Management Studio and create a PostGIS geometry in PGAdmin III?

Normally, I would just use WKT strings but I'm investigating some possible geometry weirdness with the Text methods in SQL Server. I would like to copy/paste the WKB values from the SQL Server ...
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1answer
230 views

How to save a google map direction into a postgresql/postgis database?

I have taken a direction(route) from google map. Can I save this resultant direction/path/route to my postgresql/postgis database? How?
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57 views

Do I still have to use a template DB for PostGIS?

createdb mydb -T template_postgis Is this -T template_postgis still necessary in new versions of PostGIS? I never saw this db being different, it always has those 3 sql files you run there. Is this ...
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82 views

Postgresql JDBC Table Valued Parameters

MSSQL has a great feature called Table Valued Parameters. It allows you to pass a table of a custom data to stored procedures and functions. I was wondering what is the equivalent , if exists, in ...
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1answer
57 views

convert XML to PostgreSQL using MATLAB

In a weeks time I should be able to transfer the GIS data provided in the XML format to PostgreSQL database. I have prepared the PostgreSQL database (empty) and looking at Matlab scripts. (I am on ...
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41 views

qGIS' Database Manager “Load as New Layer” Option Not Working

I'm trying to visualize some of my database queries on qGIS. I run a valid SQL query which returns a subset of my table that should be easily loaded as a layer. I then check "Load as new layer," ...
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1answer
75 views

Update/refresh edited PostGIS table in QGIS

I imported a PostGIS table (with geometry) from my PostgreSQL database as a layer in QGIS. Later, I edited the table using PostgreSQL UPDATE commands. Is there a way to quickly update (like a refresh ...
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1answer
123 views

How to compare two Geodatabases

I would like to compare the data of two geodatabases, in SDE or a file geodatabase, to detect the changes occured between them , i've tried to compare the Xml workspace document of both databases ...
2
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1answer
87 views

pass an array of geometry to postgresql function

I am trying to pass an array of geometry to a postgis function using JDBC with JAVA: CallableStatement proc = conn.prepareCall("{ ? = call somefunc(?) }"); ...
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53 views

OpenStreetMap Road and Polygon Data as 1x1 Degree Shapefiles

I am working on a global project for which I want to use OSM data as a model input. I am looking for advice on the best way to produce 1x1 degree WGS84 shapefiles from either regional extracts or the ...
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2answers
67 views

Getting OSM maps in Equirectangular Projection via osm2pgsql

I'm trying to import some OSM data into psql as equirectangular projection using osm2pgsql with the following command: osm2pgsql -c -d osm -S /usr/local/share/osm2pgsql/default.style -l ...
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45 views

Geoserver WPS - Tiled Barnes Surface with geospatial index

I'm using Barnes Surface to compute a set of points from my PostgreSQL db. The problem is that my whole table is processed for each tile. I added a geospatial index on my points, how can I tell ...
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1answer
55 views

PostGIS transform geometry with long crs

How do i transform a geometry to a new geometry with a crs like urn:ogc:def:crs:EPSG::25832 st_transform(geom,integer srid) obviously doesn't work since my srid is a string found a solution ...
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1answer
27 views

why is the CDB_QuantileBins function not found in cartoDB?

What is wrong with the following SQL query on my data? I found pretty clear documentation (1,2) that the function is supposed to work. SELECT CDB_QuantileBins(array_agg(numeric_column_of_mine), 10) ...
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1answer
121 views

Routing in MS SQL 2012

I would like to perform routing in MS SQL 2012 similar to pgRouting. In pgRouting, I'd do the following steps to create a routable network: Create a database routing with template template_routing ...
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31 views

Problem installing Aggregate Polygons Function in PostgreSQL 9.3

I'm new to PostgreSQL and I've been trying to run a sql function written by Dr. Horst Duester, found in http://www.kappasys.ch/cms/index.php?id=65&L=5, which is used to aggregate detached ...
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1answer
91 views

polygons and lines not drawn correctly (qgis+postgis)

i am really new to this so i could use some help.. i load osm file into postgresql and then i connect to the database with qgis t to plot it and i see this it happens to whatever file i import to ...
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1answer
58 views

how to run a PostgreSQL query on CartoDB tables?

I want to run a VACUUM FULL on my table, but I don't think it's working. Simply sandorl.cartodb.com/api/v2/sql?q=VACUUM&api_key={MYKEY} results in long output, apparently only repeating for ...
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1answer
605 views

How to save results of postgresql to csv/excel file using psycopg2?

I use driving_distance in postgresql to find distances between all nodes, and here's my python script in pyscripter, import sys #set up psycopg2 environment import psycopg2 #driving_distance module ...
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67 views

Geoserver WFS Fails to Load in OpenLayers

I'm working with Postgis->Geoserver->openlayers on localhost. I followed a Geoserver tutorial to import some nyc sample data into my postgres/postgis database and link it to Geoserver. The layer ...
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49 views

PostGIS: calculate width/length of rectangular surface

I have rectangular shaped surfaces (multipolylines) and I need to calculate the width and/or length.. they have a rectangular shape but they're not real rectangles. Is there a way to do this ?