1
vote
3answers
41 views

postgresql export database with command or pgAdmin III

I want to export my postgresql db with pgadmin. I search all of its GUI, I also searched the web and I don't find some sueful information. I know how to import the db into postgresql: create a db with ...
2
votes
1answer
42 views

SQL query to have a complete geojson feature from PostGIS

I would like to get a geojson feature with properties from PostGIS. I have found an example to have a feature collection but I can't make it works for just a feature. so far I tryed to modify the ...
0
votes
1answer
13 views

Road displays up to node, not up to starting point and ending point

SELECT id FROM table ORDER BY st_distance(the_geom, st_setsrid(st_makepoint($slng,$slat), 4326)) limit 1 ; get source and similar for target ; and then apply in dijkstra algo SELECT pgr_a('SELECT id ...
2
votes
1answer
38 views

<#> doesn't give a useful distance

I'm new to postgresql/postgis and trying to measure a distance. So st_distance() may be the most accurate, it's the slowest too (as I've read). I read that one can use geometric (instead of ...
1
vote
0answers
35 views

PostGIS - Intersects feature to split into linestring

I would like to know if it's possible to intersect feature datasets (multipolygon, polygon, multilinestring and linestring) to get a result as a set of linestrings being split at each intersection ...
1
vote
2answers
53 views

select intersection of 2 geometries, polygon and polyline

I'm searching how to have a result of 2 geometries (villages and wetland) which don't intersect. When I write: select distinct v.name from villages v , wetland w where ST_intersects(w.geom,v.geom) ...
0
votes
0answers
34 views

Connect to PostgreSQL from ArcMap 10.2 failed [duplicate]

I have a database server PostgreSQL and Postgis. I want to connect to database from ArcMap 10.2 , I tried Add Database Connection from arcmap menü. I typed my connection informations and clicked ...
1
vote
3answers
47 views

How can I insert a bounding box or polygon in a PostGIS geometry field?

I have a field in my table called 'geometry' that was created thus: CREATE TABLE "public"."sites" ( "id" int8 DEFAULT nextval('sites_id_seq' :: regclass) NOT NULL, #... A few MORE fields ...
0
votes
3answers
116 views

Import shapefiles on my postgis table using R

Using R, I would like to import shapefiles that are in a directory on a geometric table i have on postgresql / postgis. What is the instruction that allows me to do it? EDIT: here is my code to ...
3
votes
1answer
63 views

Using OpenStreetMap for simulation of commuter routes

I'm seeking some advice on how to build a simulation based on OpenStreetMap Data for my masterthesis. My knowledge of spatial data is very limited, since I come from another field of science, namely ...
2
votes
2answers
62 views

Problem with running PostgreSQL 9.3 after installing pgRouting

I have PostgreSQL 9.3 installed on the server. It worked just fine. I also had a webservice which connected to a database. That also worked like a charm. Later, I decided to install and use pgRouting. ...
5
votes
2answers
51 views

Working with address data extracted from *.osm

My goal is get all the addresses from a certain country, ideally - from all countries, but for now - only from one. I downloaded an *.osm file from here http://download.geofabrik.de/ for a certain ...
3
votes
1answer
30 views

PostGIS ST_ConvexHull for cube corners not as expected

I'm new to PostGIS and am wondering whether ST_ConvexHull will be of use in a particular work problem. Trying out some simple cases to make sure I understand what it's doing, I didn't expect this: ...
3
votes
2answers
95 views

Importing .shp to postgreSQL

I want to import a shp file to postgreSQL. First I create sql file and then run PostgreSQL. To create sql file, I run this command in windows cmd: shp2pgsql -s 4326 worldCountries.shp worldcountries ...
2
votes
1answer
47 views

How to calculate the shortest distance for multiple source and targets using PgRouting?

I have a table with points and a road network which includes driveways (where you enter the highway). I want to find the point which is closest to a driveway. So I was thinking I can calculate the ...
3
votes
1answer
51 views

Moving SpatiaLite Table into PostgreSQL using ogr2ogr?

How can I move a Spatialite table from a Spatialite db to a PostgreSQL db using ogr2ogr?
2
votes
1answer
60 views

nearest facility with pgrouting

I have a postgres table of students with lat, lon and geom, , and a table of schools with the same, and a table of roads that has been converted to nodes. I'm trying to find the driving distance to ...
3
votes
1answer
33 views

How to quickly extend PostGIS's R-Tree implementation?

I am working on a problem where along with data points location, I also have information about the connectivity between points.(Think a graph of points, where an edge denotes some relationship) My ...
1
vote
1answer
44 views

Postgres/PostGIS: Dissolve multiple fields with COUNT (Point shape)

I have loaded point .shp feature classes into Postgres 9.3 db, and enabled postgis,plpgsql,postgis_topology extensions. I'm looking to dissolve multiple fields within a single table 'TABLE1' and add ...
7
votes
1answer
180 views

How do I calculate Manhattan distance with PostGIS?

I am using the ST_Distance function to calculate the distance between two geometries (a train station and a building) Since I know that all buildings and all train stations are in Chicago, which has ...
1
vote
1answer
19 views

Error inserting GeoJSON in PostGIS

I know there is a similar question but I am getting a different error and none of those answers have helped. I am trying the following query (the GeoJSON itself is from the PostGIS website. INSERT ...
1
vote
1answer
32 views

Adding SRID 3857 to spatial_ref_sys

My application is throwing the following error: DatabaseError: GetProj4StringSPI: Cannot find SRID (3857) in spatial_ref_sys I'm guessing (as stated above) that I need to add the SRID 3857 to the ...
2
votes
2answers
44 views

OpenGeo postgres installation not working from command line but works from PGadminIII on fresh install

Problem: I just did a default install of opengeo suite (4.1) on Ubuntu 12.04 and followed instructions exactly. The problem is that I can connect just fine to my postgresql through pgadminIII ...
2
votes
1answer
42 views

How to use pgsql2shp when PostGIS extensions installed in a separate schema as geometry

I have the PostGIS extension (postgis functions and spatial_ref_sys table) added to a specific schema called postgis. I'm wanting to run the pgsql2shp utility with a select query on geometries stored ...
1
vote
1answer
106 views

Simplifying Shapefile without risking Spatial Accuracy?

I am building a feature for a web application. Basically would use the ABS (Australian Business Statistics) data to render the regions on the Google Maps. I am able to implement the basic working ...
1
vote
0answers
23 views

How to dissolve inner polygons in a multipolygon

I'm trying to get the boundary of a collection of zip codes. Here is my current sql: SELECT ST_AsText(ST_SimplifyPreserveTopology((ST_Union(geom)), .003)) as poly FROM zcta5_data WHERE zcta5 IN ...
1
vote
1answer
43 views

Implementing Wrapper of PostgreSQL?

How can I implement the Wrapper of PostgreSQL? I found this useful looking wrapper from a FOSS4G routing with pgRouting Workshop but I do not know how to implement it!
0
votes
0answers
31 views

Postgresql Postgis Query is taking long time

I have a table that included only 472 rows and geometry of table is Multipolygon. I am sending query to databse via PgAdmin III select * from mytable // this query takes 99413 ms this is vey long ...
1
vote
1answer
27 views

GeographyFromText and ST_SetSRID+ST_MakePoint different results?

Why am I getting different results? SELECT ST_DISTANCE( ST_GeographyFromText('SRID=4326;POINT(13.401111 52.383343)'), --berlin ST_GeographyFromText('SRID=4326;POINT(9.997559 53.533778)') ...
4
votes
1answer
44 views

Binary insert into Postgis geography column results in value being inserted as geometry

When writing WKB as a value (and as a binary parameter) to a geography column, the persisted value is not geography. Example Java is also available here: ...
1
vote
1answer
39 views

Union of several linestring to multilinestring using MS SQL Server

Followed Postgreql query is the existing one used to combine serveral linestring to a single multilinestring. is there any equivalent of this in SQLServer . SELECT ST_AsText(ST_Collect( ARRAY[ ...
6
votes
1answer
98 views

How to get the centroid of a set of points in POSTGIS?

I use PostgreSQL with POSTGIS extension. I have a set of points in the_geom column from a table myshema.myobjects I would want create a select statement to get the centroid of this cluster, so from a ...
0
votes
0answers
22 views

Problem in importing .osm file with osm2pgrouting 2.0

i've got two different systems: First system is: Ubuntu linux 64bit Postgres 8.4.8 Postgis 1.5.1 pgrouting 1.05 osm2pgrouting 0.2.0 This the system i've used for an old project that is already ...
0
votes
1answer
34 views

Pgrouting install debian 7.5 whezy

I need to install pgRouting on a Debian 7.5 64-bit server. I have PostgreSQL 9.1 and PostGIS 1.5 running. But somehow I can not install pgRouting. 1 - To use add-apt-repository ran the command: ...
1
vote
1answer
81 views

Counting self intersections of linestring using PostGIS?

Is there a way of using PostgreSQL + PostGIS for finding the number of self intersections in a linestring? I have a linestring that goes forward but in circles, and I need to find the number of times ...
0
votes
1answer
29 views

Issues ST_MakePoint in PostGIS with Geoserver

I am trying to setup a GIS system to use PostGIS and Geoserver. I have loaded all of the data into a table. The data that is received has long/lat coordinates in Degrees, Minutes, Seconds, Direction, ...
1
vote
2answers
46 views

What is best way to reorganize osm into PostGIS database entity?

I'm just wondering how to reorganize the OSM given entity to more flexible and schematic purpose. The OSM gave 4 entities the planet_osm_line, planet_osm_point, planet_osm_polygon and ...
5
votes
2answers
132 views

Growth of a PostGIS database for Social Media - Move to Cassandra?

I currently have a large and growing database of geo-social media. I'm using Postgres with postgis, and so far it's been quite good. My use case thus far has been to query the database for all posts ...
2
votes
2answers
73 views

How to rename PostgreSQL/PostGIS columns while importing Shapefiles?

I discovered shp2psql to successfully import geospatial data from ESRI Shapefiles into PostgreSQL/PostGIS. Now I would like to automatically rename the target column names. Is there any mechanism ...
1
vote
0answers
32 views

Debugging ogr2ogr “AddGeometryColumn failed” and “Terminating translation prematurely after failed translation of layer”

As noted in the title, I'm getting the following error: ERROR 1: AddGeometryColumn failed for layer pretty_polys, layer creation has failed. ERROR 1: Terminating translation prematurely after failed ...
4
votes
2answers
102 views

Optimize Tilemill export of project with contour-lines (and fix out of memory problems)

I have a project in Tilemill (based on OSM-Bright) that covers Europe and also displays Contour-Lines. My problem is that the performance of Tilemill is pretty bad when displaying the contour lines ...
1
vote
1answer
76 views

Converting file geodatabase with coded domains to PostgreSQL / PostGIS?

We have several file gdb's and would like to convert these to Postgres / PostGIS. We've used ogr2ogr to transfer these files; however, some of the fields are stored as coded domains and the fields are ...
2
votes
0answers
17 views

Convert ArcGIS gdb with coded domains to Postgres / PostGIS [duplicate]

We have several file gdb's and would like to convert these to Postgres / PostGIS. We've used ogr2ogr to transfer these files; however, some of the fields are stored as coded domains and the fields are ...
1
vote
1answer
48 views

Postgis create polygon extent/convex hull from spatial table

Please help, I have a polygon layer representing building footprints. I want to create new view in postgis that will contain rectangle representing bounding box and also another view that will have ...
1
vote
1answer
32 views

Run PostGIS command line functions in pgAdmin?

Is it possible to utilize the PostGIS command line functions, e.g. shp2pgsql, from within pgAdmin III? I am using pgAdmin to connect to a remote server.
1
vote
1answer
53 views

Force St_split() to return geometries in specific pattern

I'm Using PostGIS st_split() to split a polygon geometry by a linestring. Then I use st_dump() to return each of the splitted geometry and it is working fine. But the issue is I want to force ...
0
votes
3answers
95 views

How to Build a graph from a map

I spent days looking in all questions here and trying tutorials. I need to build a graph for a region (It will be my input in simulation) I downloaded Postgresql and Postgis and osm2pgsql. Now i can ...
0
votes
1answer
30 views

ERROR: Operation on two geometries with different SRIDs

I'm new when it comes to GIS and PostgreSQL. I have searched everywhere for the cause of this problem but I can't find the solution. I was following the documentation here First i created a table: ...
2
votes
2answers
68 views

Does PostGIS have separate implementation of GiST index from PostgreSQL?

I want to know if PostGIS has a separate implementation of GIST index or it reuses the GIST index implementation provided by Postgresql?
1
vote
1answer
47 views

How to get the width and height of a rectangular polygon in PostGIS

I have a table with point features saved in the my PostgreSQL database, and I can run the following query to get the extent of the point features and I turned the extent back into a geometry: SELECT ...