PostgreSQL is an open source object-relational database system.

learn more… | top users | synonyms (1)

1
vote
0answers
10 views

osmosis 'unable to execute statement' error

I'm trying to use osmosis to import data to PostgreSQL, got an error: and, I executed the following command successfully:
1
vote
1answer
51 views

Postgis ST_Distance query returning inaccurate results

I am using the following query to retrieve records from a postgresql DB @services = Service.select("*, ST_Distance(services.lon_lat, ST_GeomFromText('POINT (lat lon)', 4326)) as ...
5
votes
3answers
2k views

How to find the nearest point from POI in PostGIS?

I have Point of Interest data in MySQL. This are the fields latitude,longitude,address,types in which I have stored the data. Now i want to import it into PostGIS Database. But does it required ...
1
vote
1answer
127 views

Store a GeoJSON FeatureCollection to postgres with postgis

I am new to GeoJSON. I have a GeoJSON features collection as shown and would like to store it in postgres table (testtable). My postgres table has a serial id and geometry column. { "type": ...
0
votes
1answer
43 views

Fast way to check if postgis bounding box contains any points/linestrings

I have a bounding box given and want to know if this bounding box contains (or better intersects) any points or linestrings. So the query should return true if the first point/linestring was found and ...
0
votes
2answers
67 views

Post and Reconcile buttons in versionig toolbar grayed out in Arcmap

I have a versioned GDB (Postgresql) and I have versions DEFAULT-> A -> B. Version A modifies two poly lines and version B modifies one of the two that is modified in version A. In ArcMap, even though ...
0
votes
1answer
74 views

pgrouting pgr_dijkstra forcing route along a selected edge?

I have routing working where a user clicks 2 points on the map, I find the closest vertex to those 2 clicked locations and pass that to a pgr_dijkstra function. What I would like is give the edge a ...
4
votes
2answers
3k views

group by timestamp interval 10 minutes postgresql

I need some help on this: I need to group by a period of time spliting up by 10 minutes: I have this query below that returns me a result set SELECT timestamp FROM table_1, ...
1
vote
0answers
94 views

Do ArcGIS clients that direct-connect to postgresql/postgis databases override configuration settings?

I went in to modify some settings on a Postgresql database via the PGAdmin config editor and some of the settings don't have their default values and they are higher because they've been overridden ...
0
votes
2answers
47 views

Problem with a PostGIS trigger

I'm trying to update a lat and lon columns each time I insert a point with a trigger, but I don't know why I get an error. This is the syntax I'm writing: CREATE OR REPLACE FUNCTION update_tg2() ...
1
vote
1answer
25 views

geometry_column table not automatically exist

I use PostgreSQL 9.2 but geometry_column table not automatically exist like spatial_ref_sys table, but if I use PostgreSQL 9.1 it's exist. How to make geometry_column automatically exist in PostgreSQL ...
1
vote
0answers
15 views

Geoserver - How to make a psql-backed timestamp that uses timezones

I'm working on an application that extends geoserver and am frustrated as I'm trying to define a SimpleFeature that has timestamps that include timezones. I've tried declaring my timestamp field ...
4
votes
1answer
73 views

PostGIS: Strategy for fastest select by BBox with an ORDER BY polygon area clause. Cluster?

Update 2 (below) suggests 14% of the table geometries are stored out-of-line with the rest of the table records. This may be a useful clue. The Problem: We've got a table with appx 170,000 WGS84 ...
1
vote
1answer
98 views

Why doesn't my spatial index work?

I have a table with 50 million test points. The points are stored as latitude / longitude with SRID = 4326. The create script for the table: CREATE TABLE points ( name character varying, point ...
-3
votes
2answers
57 views

Fractional Area Calculation

I have a file (in both raster and vector) of different districts in a country. I have also made a grid of 1 deg * 1 deg (both vector and raster) of the country. I want to calculate the area of each ...
1
vote
0answers
30 views

PostGIS is not seeing any GDAL drivers

I've tried setting POSTGIS_GDAL_ENABLED_DRIVERS=ENABLE_ALL as an environment variable. As well as running SET postgis.gdal_enabled_drivers = 'ENABLE_ALL'; from psql. (With a pg_ctl restart after each) ...
0
votes
1answer
48 views

find all circles intersecting another in a table [duplicate]

I am using postGreSQL (9.3) and postGIS (2.1). I have a table containing names and circles (point + radius). Given a name and a circle (point + radius), I would like to find all the database lines ...
-3
votes
1answer
58 views

How to use st_touches to get all nearby states

I have a table with all US states geometrical data: USstate ------- state | The_geom (here filling in random value) AL | 00012312 NM | 000234234 NJ | 0000234534 NY | 00005465 ...
4
votes
2answers
170 views

PostGIS: ST_Equals false when ST_Intersection=100% of geometry?

I have 2 datasets consisting of cadastral parcel data - roughly 125,000 rows each. The geometry column is WKB polygons representing parcel boundaries; all data are geometrically valid (the polygons ...
2
votes
1answer
35 views

How can you tell which port number an existing Database Connection is configured for?

I have a database connection to a postgresql database on a non-default port, 5433. I specify TESTDB,5433 as the instance and I can connect with no errors. If I open that connection properties ...
2
votes
0answers
39 views

Is it possible to replicate an SDE geodatabase including the archive tables?

I have a database in one location which I would like to replicate to another using one-way replication. In testing we haven't been able to replicate the archive tables, which is unfortunate because we ...
0
votes
0answers
61 views

Create a route by using points (pgRouting)

I'm currently working on a routing model for 17th and 18th century voyages. These routes are based on data from old shipping logbooks. I made a separate layer in QGIS which contains point. I exported ...
5
votes
1answer
250 views

Maritime route prediction avoiding land masses

I am working on a project where the following functions have to be implemented: Predicting the locations of the ships (in maritime environment) at a future time. (Can be done with Kalman filter, IMM ...
0
votes
1answer
82 views

How to store Google Maps DrawingManager Rectangle overlay in PostgreSQL Postgis GEOMETRY(GEOMETRY, 4326)

What is the correct way to store a Google Maps DrawingManager rectangle overlay? The API basically provides me with NE & SW lat/long coordinates. Should I use BOX()? Is it possible to create a ...
2
votes
1answer
84 views

ERROR 999999: Error executing function - Failed to execute (CopyRaster)

ERROR 999999: Error executing function Unexpected operation No spatial reference exists This is a fragment from my log report: ERROR 999999: Error executing function. Database user ...
1
vote
1answer
83 views

How to define Z dimension on table with PostGIS for import in TileMill?

I'm trying to reproduce the idea behind this blogpost from Mapbox, but with other data, for example the ne_10m_populated_places_simple dataset from Natural Earth. By adding a z-dimension to the data ...
1
vote
1answer
35 views

st_length column in Postgres db and ArcGIS under WGS84

I have a polyline feature class in ArcGIS running on top of postgres in WGS84 datum. I am wondering what is the unit of length used to drive st_length column under this datum and what is the method of ...
0
votes
0answers
56 views

Installing mysql_fdw on Windows

I want to create a join between a spatial database (PostGIS) and a non spatial database from MySQL. Both databases have a unique ID who can be joined. I found a way to do this with PostgreSQL and a ...
0
votes
0answers
40 views

How do you unregister a table from a esri geodatabase?

How do you reverse the "Register with Geodatabase" operation? I reckon it isn't uncommon to accidentally register (since it is the first option on Manage menu in ArcCatalog 10.2). Is there a tool ...
1
vote
0answers
53 views

Plotting points on a map, the json objects retrieved from a database; using WebGL shader code

I am using an OSM dataset using which I am plotting those points on a map (google maps API). I am plotting these points using webgl shader code (see:  http://psousa.net/demos/webgl/) The above link ...
1
vote
1answer
36 views

How do I project a point stored as Lat / Lon to a state system?

I have some points stored as WGS84 (EPSG:4326) data. I want to write a SELECT statement to return the projected values, in EPSG:2811, and unprojected values. Here is my table SQL: CREATE TABLE ...
0
votes
1answer
28 views

Problem with ST_Intersection in postgis

I have got a problem with ST_Intersection as bellow query. I do not know why I can not get element z of this intersection? ----query: SELECT ST_AsText(ST_Intersection('LINESTRING Z (0 0 0, 2 2 2)', ...
1
vote
1answer
37 views

Extracting specific geometry point from MultiPoint geometry using PostGIS?

I am working with multipoint geometries in postgis and would like to extract the geometry point associated with the greatest y value of the multipoint geometry. How may I accomplish such a task? For ...
0
votes
0answers
68 views

How to import osm.pbf file into database with Python Imposm

I want to import a .osm.pbf file with the Python library Imposm. Currently my work flow is the following: import requests import os city_name = 'santiago_chile.osm.pbf' url = ...
0
votes
0answers
41 views

Make PostGIS points from Ajax data in a php file

I have an AJAX a string which has lat-long parameters in a request. I try to make point in an SQL query but I get this error 37.15452626 ERROR; parse error- invalid geometry HINT: ...
1
vote
0answers
73 views

PostGIS: Ordering by the sum of two distances

I have an SQL statement that selects possible bus routes between two points, ordered by the walking distance required from the start point to the departure bus stop (distance1) and the arrival bus ...
1
vote
0answers
37 views

PostGis without shp2pgsql

I recently reinstalled postgis on my pc, following these instructions link. The installation is successful, and for several days work using PostgreSQL and PostGIS without problems. Now, I need to ...
1
vote
0answers
31 views

ST_Split and looping problems PostGIS

I am a total PostGIS noob, and am having trouble understanding the finer points of SQL syntax. I am trying to take a large set of line data and clip it with a polygon. I then want to create a new ...
3
votes
1answer
5k views

Transforming from SRID 900913 to 4326 with PostGis

I have two Postgres tables with different SRIDs: 4326 and 900913. I want to convert the latter to 4326. I first changed the SRID using: Select UpdateGeometrySRID('table', 'geomcolumn', 4326). I ...
1
vote
2answers
61 views

How to populate a table with geom line? [closed]

I have the coordinates of a lot of points in a table. In pgadmin I want to make a line that passes on these points. I already have my Coordinate point im my table. I want to make line with those ...
1
vote
0answers
26 views

pgRouting. pgr_ksp() returns -1 as id3

The documentation (http://docs.pgrouting.org/dev/src/ksp/doc/index.html) says that the result should be 0 for the last row. Is the same 0 than -1? I'm new on this. Thaks for the help.
0
votes
0answers
20 views

Update Statement in PostGIS ERROR

I am trying to update a column in PostGIS using information from a column in another table where they spatially intersect. I looked up how to do this on the PostgreSQL tutorial and I think that I ...
0
votes
0answers
32 views

Displaying measurements on a grid of the Earth

I'm developing an application where I need to draw the averaged results of some measurements on a map. Right now, I'm using Leaflet to draw the map with MapQuest/OpenStreetMap tiles, and have the ...
7
votes
4answers
3k views

Connecting to ArcGIS Desktop PostgreSQL database (running locally)

I know this is a total noob question but then again, when it comes to PostgreSQL I am a total noob... I have installed the OpenGeo suite on my computer, running Windows 7, 64-bit. I have ...
1
vote
1answer
69 views

Creating GeoJSON from Postgres

We are transitioning from Google Maps to Mapbox. Mapbox is a proponent of geoJSON and uses it extensively, so we are considering adopting it for all of our maps. An issue is the creation of the ...
3
votes
1answer
92 views

PostGIS - ST_Within or ST_Disjoint performance issues

I have a table of about 150,000 points in PostGIS with a spatial index and a SRID of 27700 (OS). I want to select the points that fall outside England and Wales. I have a multipolygon table with ...
-2
votes
2answers
115 views

How to populate my table with data in excel format?

I have 160000 rows of data in Excel and I want to put them in my table in PostgreSQL. How can I import X,Y coordinates from my excel file to my table in postgresql?
0
votes
2answers
76 views

Postgresql trigger on a table that update a field

Depending on values on 2 fields A and B, I would like a field C to be updated or filled with a specific value. For example : create or replace function periode() returns trigger as $BODY$ begin IF A ...
0
votes
1answer
43 views

Use C# to display PostGIS data in ArcGIS Developer kit with arcgis-ogr plugin

I am trying to display data in ArcGIS Runtime Engine Developer kit 10.2.2 using OGRPlugin/OGRPlugin/ develop by Ragi Yaser Burhum on https://github.com/RBURHUM/arcgis-ogr . I am using this format but ...
13
votes
2answers
2k views

Which function for creating a POINT in PostGIS?

When defining a Point in PostGIS, when do you decide to use which of the following? ST_SetSRID(ST_MakePoint(lon,lat),4326) ST_SetSRID(ST_Point(long,lat),4326) ST_SetSRID(ST_GeomFromText('POINT(lon ...