PostgreSQL is an open source object-relational database system.

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how to fix this ERROR: Start vertex was not found

I am attempting to make an SQL selection but receive an error. My statement: SELECT * FROM network JOIN (SELECT * FROM shortest_path(' SELECT gid AS id, start_id::int4 AS source, end_id::int4 ...
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28 views

problem in PostGIS Name of the system used for Points and how to get distance between to point?

I have started to work on a project in PostGIS. I have a table with a geometry points in which points saved like this : "010100000089F511C671C01E4162327E2A83545341" and I have translated this ...
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2answers
98 views

Neighbors within distance from every row

I have a research project of 180,000 entries and I need to calculate the number of neighbors (points from the same table) that exist within a 300 meter radius for each point. My method is very slow, ...
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12 views

PSQL: Setting maxspeed to all highway tags having 'highway' text= NULL AND 'maxspeed' text = NULL?

Hello everyone, I am trying to create a procedure in postgresql using functions of postgis extensions where I can first search and find all the rows having an empty 'highway' tags AND ...
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18 views

Free tutorials for beginners in PostgreSQL, PostGIS and SQL? [duplicate]

I've been cruising youtube videos and various sites trying to pick up information on working with postgresql, postgis, and sql. I would love a few recommendations for quality tutorials and sites. ...
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1answer
435 views

How to improve ArcGIS Desktop 10.2.2 and Postgres 9.2 PostGIS geometry performance?

I'm experiencing sever performance issues on a polygon featureclass(PG_GEOMETRY) in a PostgreSQL 9.2 database from a 10.2.2 client. Even when zoomed to an area with 10-20 features within the extent. ...
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1answer
195 views

PostgreSQL default values in QGIS 2.8.1

I have a problem with default values the are set in a PostgreSQL table. When I work on them in QGIS 2.8.1 and I save the layer, the default values were not computed, so the constraints block me. With ...
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1answer
187 views

PG::UndefinedFunction: ERROR: operator does not exist: point = unknown

Recently, I developed a feature to save and fetch points(lat and lon) from DB. It is working fine on my local, but on production database it is giving error: PG::UndefinedFunction: ERROR: operator ...
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274 views

Determine which points are contained inside a given polygon

I have these database tables defined: CREATE TABLE regions ( id SERIAL PRIMARY KEY, name VARCHAR(150) NOT NULL ) CREATE TABLE region_points ( id SERIAL PRIMARY KEY, region_id SERIAL ...
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1answer
125 views

Convert 2D coordinates from NAD83 to WGS84 using Postgis

I have a set of NAD83 coordinates that I need to convert to WGS84 coordinates. I am using postgis on an RDS. Specs for the box I am using from postgis_full_version(): POSTGIS="2.1.3 r12547" ...
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39 views

UPDATE a value field for area of the geom and convert sq m to acres using cartodb

I'm trying to use the SQL commands in CartoDB to UPDATE a value field that shows total acres of the area of the_geom. My SQL is pretty poor/entry level and has some issues: UPDATE table_name SET ...
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67 views

Create table into PostgreSql from Geoserver SQL View query

I know how to connect Geoserver to PostgreSql and create SQL View queries with parameters from Geoserver, but ;it is possible to create a new table into PostgreSql from a Geoserver Sql View with ...
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260 views

PostGIS extension on Debian not found: could not open extension control file

I'm trying to set up the PostGIS extensions on a Postgres 9.1 database on Debian Wheezy, but getting an error: =# create extension postgis; ERROR: could not open extension control file ...
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1answer
65 views

OpenLayers WFS-T tinyows insert transaction: error GID value

I try to implement insertion of new point using Openlayers v2.13 saveStrategy calling tinyows which implements the WFS-T transaction; I use the example from ...
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1answer
76 views

Importing shapefile into PostgreSQL/PostGIS?

enter image description hereI'm completely new to PostgreSQL and PostGIS. I finally got both installed and have the PostGIS extension installed. I'm running the PostGIS shapefile import manager. I ...
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1answer
65 views

Is there any topology handler in QGIS?

When importing autocad maps, sometimes topology will be chaos, this need to be amended. And when I add new topology in QGIS, how to save that to the postgreSQL? Is these functions included in QGIS or ...
2
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1answer
59 views

How to reproject all geometries columns in a PostGIS schema

Is there's a way to reproject all geometries columns of a postgis schema given the same source SRID to the same destination SRID? Exemple : schema.table1 has 2 geometries columns geom and geom2 with ...
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1answer
59 views

What is the proj4 for World Behrmann (54017)?

I have this in an old SDE database: ...
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1answer
114 views

Database connection times - PostGreSQL vs Oracle (ArcSDE)

I have 2 SDE instances. Both have the same amount of data (2000 datasets both raster and vector). One is PostGreSQL 9.2 with ArcSDE 10.2.1 One is Oracle 11g with ArcSDE 10.2.1 So basically the ...
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70 views

Postgis C/C++ API unpacking geometries

I would like to create a postgres extension that works with postgist types Polygon, Multipolyon, Linestring, Multilinestring based on postgres extension building infrastructure: ...
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1answer
29 views

Migrating Data to Another Database whit FDOToolbox

I want to migrate my data (Shapefile) to a PostgresSQL using a FDOtoolbox , i searched a tutorial for that but i dont found it . can any one explain the steps to do for migarte the data from a ...
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1answer
100 views

Get a point value with psycopg2 and PPyGIS

I'm trying to setup a basic working postgis setup with python ppygis package. >>> import psycopg2 >>> import ppygis >>> connection = psycopg2.connect(database='spre', ...
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25 views

Assinging ID numbers with a spatial query in PostGIS

I am fairly new to PostGIS and I am working on a project where I am trying to write SQL to assign ID numbers in a column to points relative to the ID numbers of the polygons that contain different ...
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82 views

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

What is the correct way to store a Google Maps DrawingManager circle overlay? Should I just store the center as a POINT and the radius in a separate column or store a polygon using ST_Buffer()?
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240 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 ...
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97 views

PostgreSQL PostGIS ST_Point_Inside_Circle() radius in meters

I'd like to begin by saying that I have very little knowledge and understanding when it comes to GIS (despite extensive experience with Google Maps API). PostGIS appears to be a whole new ball game on ...
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258 views

How to insert Google Maps API Lat/Long into PostgreSQL Postgis GEOMETRY(GEOMETRY, 4326)

I'd like to begin by saying that I have very little knowledge and understanding when it comes to GIS (despite extensive experience with Google Maps API). PostGIS appears to be a whole new ball game on ...
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1answer
71 views

Finding census block for given address using Tiger geocoder

I have a geocoder based on Tiger/Line data running on PostGIS. I need to find census block for a given address. How can I do it? Like I can do for census tract: SELECT get_tract(ST_Point(-71.101375, ...
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81 views

ArcMap 10.1, the identify tool does not show feature attributes on a query layer on a PostgreSQL database. Why?

I'm developing an ArcGIS 10.1 desktop map editing application using ArcEngine and ArcObjects. I'm using a PostgreSQL database. After a direct database connection (using a query layer), I displayed the ...
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1answer
28 views

PostGIS problem finding FK to PK

I have 2 tables in a postgres db to which I need to establish a 1-m relationship between. One of the tables has geometry, the other table does not have geometry but contain fields that describe the ...
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133 views

Hibernate spatial “org.hibernate.integrator.spi.Integrator” error

I use hibernate-spatial library and I encounter with this error: HTTP Status 500 - Handler processing failed; nested exception is java.util.ServiceConfigurationError: ...
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199 views

PostgreSQL/PostGIS Geom to JSON with Inner Join to another table

I am currently producing JSON from a database successfully using the following query: SELECT row_to_json(fc) FROM ( SELECT 'FeatureCollection' As type, array_to_json(array_agg(f)) As features FROM ...
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1answer
117 views

GROUP BY on geography in postgres 9.4.0 returns wrong/different results

table definition: CREATE TABLE search ( id bigserial NOT NULL, location geography(Point,4326) NOT NULL, location_aggregated geography(Point,4326) NOT NULL, created timestamp with time zone ...
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1answer
53 views

Point inside st_dwithin with wrong results

I want to get all points, that are in the same area. Therefore, I have the following query for my table check: SELECT l.location_id, l.location FROM check l INNER JOIN check l2 ON ST_DWithin ...
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2answers
93 views

How to get the number of polygons of a geometry in PostgreSQL

How can I get the number of polygons that form a geometry in PostgreSQL? For example U.S map has a lot of islands in addition to its main lands. I want to count these islands plus the main lands.
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45 views

display thematic map using openlayers

iam displaying map from mapfile(mapserver) in c# using openlayers mapfile is connected to postgres it is working well but now i want to diaplay thematic map using the postgrs database using ...
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1answer
73 views

How to create Spatial Reference System in QGIS?

I have some Attribute and the coordinate and the coordinate reference system. I want to create a DBmanagamet form my spatial data. To do that I want to create one table with name Spa_ref_sys, but I ...
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117 views

Postgres OSM planet reverse geocoding

i'm building function for reverse geocoding in Postgres using PostGIS function's. For now i was able to clean up all the data that was useless to me(rivers, buildings,etc.). I got 3 ...
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1answer
66 views

Using more than one ST_function in one query

I have got stuck with a dynamic analysis that I would like to include in a project I am working with. I want to save the query in the project file or make it to a view in my database. I have tried a ...
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40 views

Batch load multiple shapefiles to Postgis

According to the shp2pgsql help, the options drop, append, create and prepare are mutually exclusive. So, if I want to create a table from a shape and then append multiple other shapefiles, I do ...
6
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1answer
141 views

How to create ArcSDE Geodatabase in PostgreSQL without ArcGIS Desktop?

I am programming a small application using Arcobjects, and I need to create an ArcSDE geodatabase on PostgreSQL. In ArcSDE at 10.2 there is no Post Installation Wizard. How do I create a Geodatabase ...
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34 views

Geoserver SLD repeat = PropertyName

i've got Geoserver up and running, rendering spatial data in Openlayers, based on a view from a Postgresql/Postgis database. I'm trying to get most of the values for the SLD file by the object ...
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2answers
113 views

Load multi CSV files from local disc to Postgres

I want to load a lot of CSV files from a local disc in an already created postgres database. Which is the easiest way to do that? By using SQL or Java? I suppose that I need a loop for doing that, but ...
3
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2answers
92 views

How to reproduce FME Change Detector results in PostGIS?

we would like to use the function change detector from FME in PostGIS. We had a try with the following SQL-Statements but the function doesn´t work. There are no results in the end. The single ...
3
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1answer
76 views

From hundreds of shapefiles to PostGIS with some kind of directory/file structure

We have more than 700 shapefiles which we will import in a PostgreSQL/PostGIS database. We want to use a single database to make joins on our tables without using foreign database wrapper. Our data ...
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42 views

Invoke PostGIS geocode function using Python

I have a PostGIS Geocoder built with using Tiger data. Using SQL, I am able to execute all database functions and queries. I want to use it with my Python program. One of the option would be to write ...
2
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1answer
60 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 ...
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1answer
66 views

Connect to postgresql using ARCSDESQLExecute

I'm trying to connect to a postgresql database using ARCSDESQLExecute from ArcPy. When running my script as stand alone (debug from pyscripter) it works fine. When running my script as a tool from ...
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126 views

Error installing PGRouting database extensions

Im trying to install pgRouting and I cannot reach the end of the way because of the following error: psql:/home/user/share/postgresql/contrib/pgrouting-2.0/pgrouting.sql:2459: ERROR: could not load ...
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52 views

Open source UML modeling software (GIS)

I am wondering is there any opensource UML to Postgresql Mysql tables conversion software which also includes the geospatial datatypes ? Note:I want conversion from UML to database. and NOT ...