A Spatial Reference System Identifier (SRID) is a unique value used to unambiguously identify projected, unprojected, and local spatial coordinate system definitions

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Different values while calculating distance

I'm developing a project using LeafleatJS and PostGIS. Currently I'm getting trouble while calculating distance between two coordinates. For example: Point 1 - lat: -12.99835864475412, lng: ...
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1answer
11 views

Control number of segments in ST_Buffer for geographies?

I've been attempting to construct circles centered around a list of points in PostGIS with good success. I've opted to circumvent having to look up UTM zones and using optimal SRID by simple letting ...
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1answer
34 views

Transform data type EWKT and GeoJSON to SRID 900913 [duplicate]

Is posible transform data type EWKT with SRID 0 for example: MULTIPOLYGON(((295098.566494 6006717.0377012,344018.26458971 6009163.022606,329342.355161 5972473.2490342,295098.566494 6006717.0377012))) ...
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1answer
58 views

Transform to SRID 900913

How i can transform the geometry WKB for example: ...
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33 views

SRID and lat long values

I am using the following query to generate the lat long values SELECT NAME, ST_X(ST_Centroid(ST_Transform(geom, 4326))) as longitude, ST_Y(ST_Centroid(ST_Transform(geom, 4326)))as latitude from ...
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1answer
42 views

Add SRID to Point

When inserting a point into a PostGIS database I do it using ST_GeomFromText('POINT(0 1 2)',26918). Note that this was done on a tutorial database where the SRID was set manually as explained ...
0
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1answer
33 views

Do different RDMS use different SRID's to identify the coordinate system of a spatial object?

I'm looking for a reference that lists a standard SRID for a given CRS. Do RDMS's utilize a standardized SRID, such as OGC? Or is it unique to the RDMS?
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82 views

GeoDjango: Insert geography coordinates and filter the nearest points, step by step

I would like to: Save pairs of srid 4326 (latitude, longitude) points in a PostGIS Geodjango 1.8 Database. (Maximum distance between the edge points: 2.000km) Given a srid 4326 (latitude, longitude) ...
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1answer
32 views

How to get detailed informations about a layer (SRID, extent, …) in Geoserver REST API?

I'm trying go get detailed informations about a layer using the Geoserver REST API (I'm using Geoserver 2.8.1), but according to the online API documentation, I can only get basic informations such as ...
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49 views

Best SRID for worldwide data in Microsoft Sql Server geometry field?

I'm using Microsoft Sql Server 2012 to store geographical data related to hydrometeorological stations which are scattered around the globe (point layers and multipolygon layers). My data is in WGS84 ...
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44 views

Geocoding and SRID - can't get desired SRID

I want to geocode a set of addresses with GoogleMaps, store the results in a different SRID in a PostGIS table and then project it in QGIS over a layer with the identical SRID. So far, it has been a ...
3
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1answer
158 views

Is re-projection needed from SRID 4326 (WGS 84) to 4269 (NAD 83)SRID

I have US census data against state boundaries stored as SRID 4269, in an MSSQL DB. The input data used for calculations against that dataset is stored as SRID 4326. As far as I can infer from the ...
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51 views

Filtering out of bounds' coordinates

I have a set of coordinates, that I receive from GPS. I store them in database, its geometry is 4326. I am using the next query to calculate the travelled distance: ...
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0answers
59 views

ESRI/SRID mismatch: How to correct?

I'm currently working with PostgreSQL and CartoDB to display X and Y coordinates converted to a geom. My shp files have been created and are displayed through CartBD. When I try and run a map view, ...
2
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2answers
84 views

What is the SRID for EPSG 102743?

I am trying to create a table in PostGIS for some LiDAR data and I need to set the the_geom column to my data's SRID. My data is in EPSG 102743, but when I try to use 102743 as my SRID as the_geom I ...
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0answers
95 views

SRID of geoemtry exported in PostgreSQL with ogr2ogr

I use ogr2ogr to export geometric data from EDIGEO files to some PostgreSQL table in append mode, but the output geometry SRID is always set to zero. Can I do something to specify the output geometry ...
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2answers
130 views

Which SRIDs to use for what tasks?

I try to understand the idea behind the different Spatial Reference Identifiers. I understand that the different SRIDs identify different projection views on the earth and that they are important for ...
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2answers
31 views

proj4text column blank for SRID 97688 - causing errors

So apparently a blank proj4text field causes errors when adding a record. When you enter something close to correct into proj4text, the records get inserted without error. So what is the correct value ...
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1answer
62 views

UpdateGeometrySRID and low disk space

I have imported a 508GB DB with unknown SRID with ogr2ogr, hence my geometry SRID is 900914. Now I'd like to run SELECT UpdateGeometrySRID('contours','wkb_geometry',3857); However, I'm running ...
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1answer
186 views

change SRID of shapefile and QGIS

It is possible to change the SRID from a shapefile to another SRID in QGIS ? I have a shapefile in 2100 srid and i want to change it in 4326 SRID.
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1answer
45 views

SRID awareness in Postgis functions

I have a column named position with geo data. Query: SELECT ST_SRID(position) FROM checkpoint LIMIT 1; returns 4326 If I try to simplify/compress points with SELECT ...
0
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1answer
21 views

Distance Matrix in QGIS, which SRID

I read several threads about it.. How to get $length in meters in QGIS? How to join attributes from nearest point in QGIS? QGIS, CRS's and metric measurements of distance matrix and nearest ...
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2answers
249 views

Adding additional geometry column in PostGIS

I'm importing many sets of geodata into PostGIS, and they have different SRID's. (Some have EPSG:3857, some EPSG:4326, some something else). I'd like to create an additional geometry column, eg. ...
4
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1answer
252 views

Updating SRID (Update_GeometrySRID) does not alter polygons (when it should)

I am trying to change the SRID of polygons layer, but I'm having trouble visualizing the result. I the SRID is misreported the shapefile I used to import into PostGIS. The metadata says the ...
0
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1answer
155 views

Postgis geometry column with different srid

I have a table that has geometry column named the_geom. I set SRID value to 29903. And I used Openlayers api to view data on map. I set map srid as 29903 and works well. But if I need to show my data ...
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2answers
108 views

How to get ST_MakeLine ready for QGIS?

CREATE VIEW new_line AS SELECT point1.gid, ST_MakeLine(point1.geom, point2.geom) FROM point1, point2 WHERE point1.gid = point2.gid; It's possible to load the layer but QGIS says 'There is no entry ...
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109 views

H2GIS and POSTGIS

i use PostGIS and H2GIS and i have tested ST_Transform function on both systems: SELECT ST_AsText( ST_Transform( ST_GeomFromText('POINT('||to_char(5873455.6,'9999999.99')||' ...
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1answer
40 views

Transforming takes long time with st_transform

I have two shape files contains considerably large data. I exported them to my geodatabase(using arccatolog), which takes 2 days. The problem is their srid must be changed. So i tried creating new ...
0
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1answer
223 views

SRID, Shape2SQL and SQL Server 2008r2 query

I'm using Shape2SQL to load the Ordinance Survey's Meridian 2 map into SQL Server 2008r2 (which is working very smoothly and painlessly). According to this page ...
7
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1answer
98 views

Why is there an upper limit to the SRID value in the spatial_ref_sys table in PostGIS 2.1?

I was trying to insert a reference system in PostGIS from http://spatialreference.org/, and got a constraint violation for spatial_ref_sys_srid_check. I checked that constraint and found that, when ...
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1answer
161 views

Creating geodjango model with geometry field that can accept different projections

I am working on web application with GeoDjango and within the model (db table) RoadAxis I have geometry field or more precisely LineStringField where I need to store different polylines (road axis) ...
2
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0answers
139 views

set Default projection in postgis table

I've set the SRID 4326 for a table having geometry column, but when i insert a geometry without SRID, i get an error because no SRID specified is interpreted as -1 or 0, so how i can set a default ...
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2answers
100 views

SRID is messed up when google-maps layer is added

I've some problems with using a PostGIS layer within QGIS. First of all, I had this same problem on both QGIS 2.4.0 and 2.6.1 I cannot display the Google Maps layer AND my PostGIS layer together. ...
2
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1answer
125 views

Calculating Distances Between Geometry Columns of Differing SRIDs

I am attempting a relatively simple task but have been running into trouble. I have two tables, one which has lat and lon points which were geocoded using google (SRID 3857) and another table which ...
2
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0answers
94 views

Different SRID problem

Hi here is my problem, I have two geodatabases and i import a number(large) of tables from one to another by using arccatolog(ArcGIS 10.2). However the tables and indexes created on them are imported ...
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1answer
290 views

Baidu Maps SRID?

I am making an App which will make use of Baidu maps for geofencing and other features (as the app will be released in mainland China) I am using GeoDjango, with Postgresql / PostGIS / Proj4 etc.. ...
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77 views

Auto-reprojecting (st_transform) SRIDs in Postgis

I have a postgis table that is edited from different sources. The points added from Source 1 are in SRID 23030. The points added from Soruce 2 are in SRID 4230. I want all the points in the table ...
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42 views

How to work with SRID using PostGIS [duplicate]

I am using PostGIS with OSM Data from Geofabrik that covers the complete area of Austria. I am used to work with calissical longitude and latitude. If you enter Vienna, Austria in ...
2
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0answers
139 views

geodjango difficulties with srid

I'm trying to make geodjango app. I'm using SQLite and SpatialLite. I want to add shops, and be able to sort them from closest to furthest from my location. When in my model I have: location = ...
0
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1answer
2k views

Choosing SRID and what is its meaning? [closed]

I'm new to GIS, in PostGIS, and I'm struggling with the SRID concept. How do you choose a SRID for a database column? This is making me crazy. Why do I need to choose a SRID? What's its meaning? ...
2
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3answers
632 views

Where to find the units for a specific spatial reference system?

I want to use the st_within function to find geometries within a specifi distance. My geometries are both in the same SRID stored in a postgis db. From what I read here: ...
0
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1answer
49 views

why the graphics layer coming from the Geoprocessing service in WGS_84, is projected correctly on a Web Mercator Auxiliary Sphere Basemap

I have made a Geoprocessing service, which results (features) are in wgs_84 (4326). My map's spatial reference is wgs_84 Web Mercator Auxiliary Sphere 102100 (projected system) Considering that the ...
5
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3answers
901 views

PostGis: Geometry from UTM text

I have plain data in a postgresql table which looks like this: ╔════╦═══════╦═════════════╦══════════════╦══════════╦═════════════════╗ ║ id ║ index ║ easting ║ northing ║ utm_zone ║ ...
0
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2answers
623 views

What does the srid code mean in an sde.st_geometry?

In case of an sql insert query like : INSERT INTO OUTBREAKS (OID, address, city_code, loc) VALUES (1, '1420 kirchestrasse', 43, sde.st_geometry (0.00003, 0.00051, null, null, 4326) ...
0
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1answer
107 views

geometries with different SRIDs errors (even after setting SRID)

I've looked at existing questions about this (including this one) and followed the advice that was shared there. I'm still seeing this when I run some queries: RuntimeError: Postgis Plugin: PSQL ...
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1answer
492 views

How do I get the closest point on a road to a point when I have imported OSM data using osm2pgsql?

I have been trying to use OSM data to find the closest point to a road for a given point. I imported the OSM data into postgis using osm2pgsql, and I am getting results back, but they are at the ...
2
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2answers
1k views

Ensuring SRID on geometry column in PostGIS

I am using a table that has a geometry type column called "wkt". Its definition in the table looks like this: create table sometable ( ... wkt geometry not null, ... ); I want to change it ...
2
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1answer
45 views

Why does my query not run since SRID are the same?

I am running this query: SELECT source,ST_AsText(ST_ClosestPoint(roads.geom,ST_GeomFromText('POINT(22.256 39.569)'))) FROM roads ORDER BY ST_Distance(roads.geom,ST_GeomFromText('POINT(22.256 ...
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1answer
90 views

Equal Area SRID for Finland?

Does anyone know the SRID for an equal area projection that is suitable for Finland?
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2answers
250 views

Is there a command line tool for converting projection in .prj and GeoTiff to EPSG codes?

Is there a command line tool to convert a shapefile projection in the .prj file into corresponding EPSG code? I know that there is website http://prj2epsg.org/search for doing this online, but I ...