A group that maintains a freely available database with standard codes for coordinate systems, datums, spheroids, units and the like

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2
votes
2answers
190 views

Why is my EPSG:3068 to WGS84 projection not accurate?

I need to project EPSG:3068 (Soldner Berlin) to lat/long. It works fine with https://epsg.io/3068/map, but I'm looking for a way to do it with a Python script. I tried both pyproj and the epsg.io ...
1
vote
2answers
75 views

How to show two layers with different projections in QGIS

I have a shapefile that define X and Y in meters, not lat and lon. Then I have another file (CSV) that stores points locations as lat and lon, e.g. 30.4, 2.2. I want to load these two files as two ...
2
votes
1answer
113 views

Why don't some EPSG have proj4?

I was looking into PostGIS and its defined Spatial Reference Systems, and I found that some have no proj4. Why don't they? SELECT auth_name || ':' || auth_srid, proj4text FROM spatial_ref_sys ORDER ...
1
vote
0answers
50 views

opengeo suite sdk gxp EPSG

I am working in a viewer with suite sdk gxp and I can see my layers, but some of them in the viewer are located wrong. I have checked postgis and geoserver and every layer is ok with the same EPSG, ...
2
votes
1answer
621 views

Layer missing Native SRS in geoserver

I'm currently trying to get a couple of layers uploaded to a geoserver and I'm having trouble getting the projection recognized. The result of the curl command is that the two layers are both missing ...
0
votes
1answer
63 views

What is the type of EPSG of longitude/latitude (not Point) co-ordinates?

I want to know that what is the type of projection (900913, 4326 or so on..) of long/lat co-ordinates. I happen to come across a slight confusion while querying planet_osm_lines when I dump (...
0
votes
1answer
228 views

Converting EPSG:28992 to universal (Google Maps) lat/lon

I'm trying to find a way to convert EPSG:28992 to Google Maps' lat/lon using PHP. Is this possible? I'm trying to convert XYZ: 137634.397 455715.439 0.0. I'm using Kadaster, which is a Dutch ...
1
vote
2answers
14k views

How Can I change the projection of shapefile in Qgis?

I have a probleme with Qgis. I would like to change the projection of my shapefile, it's about caves in my country. The default projection is set to EPSG:3003, I want to change it to wgs84 EPSG:32632. ...
2
votes
3answers
116 views

How to find the extent of (many) EPSG CRSes?

I want to map the geographic extents / bounding boxes of a lot of EPSG CRSes. At least, those with a rectangular geographic extent. For example, take epsg:2004, visiting that page shows the extent (...
0
votes
1answer
39 views

How to display EPSG:32649-WGS 84 image on EPSG:4326 map in ArcMap?

I have a image has EPSG:32649 coordinate system and I wanto display this image on a EPSG:4326 map on arcgis desktop (arcmap) . Any one can help me?
25
votes
2answers
17k views

What is the difference between EPSG:900913 and EPSG:3857?

I'm using the QGIS google layers plugin to digitize a parcel as a shapefile. Later I want to import it to PostGIS. I know that google maps use a special 'google mercator' projection. What is the ...
0
votes
0answers
29 views

Wrong axis order in geotools crs when reading from EPSG:4326 [duplicate]

Map<String,Object> params = ...; // postgis params DataStore dataStore = DataStoreFinder.getDataStore(params); SimpleFeatureCollection collection=...;// collection to save SimpleFeatureType ...
1
vote
2answers
43 views

Is publishing geodata in unprojected latlon coordinates better than a local UTM projection?

This is meant as some kind of reference Q&A. Unless I am working with truly global data, I always prefer projected, local, metric coordinates so that calculations like area or distances are "...
1
vote
2answers
184 views

GeoTools CRS.getAxisOrder(CRS.getAxisOrder(“EPSG:4326”)) returns EAST_NORTH (LON_LAT)

All is in the title, with GeoTools if I do : AxisOrder order = CRS.getAxisOrder(CRS.getAxisOrder("EPSG:4326")); It returns EAST_NORTH (= LON_LAT), but EPSG:4326 is defined as ordering latitude ...
0
votes
2answers
625 views

How to transform EPSG:3857 to tile pixel coordinates at zoom factor 0?

I'm creating a Leaflet map with an WebGL overlay (using L.CanvasOverlay) which renders a street network on the GPU. Let's assume I have a point (1497143.62, 6896952.18) in EPSG:3857 and want to ...
2
votes
1answer
287 views

WGS84 conversion to EPSG:3067

I'm trying to convert coordinates from WGS84 to EPSG:3067 with proj4js and Openlayers, but can't get the conversion right. When I run proj4('EPSG:3067',[-24.9993393, -60.184716]); it gives [-2143537....
1
vote
1answer
152 views

Using proj to convert EPSG:2263 to WGS84

I have input data in EPSG:2263 with X and Y coordinates such as: X,Y 987043,206407 982441,212359 990907,209020 (these locations are within NYC). I need to convert these to WGS84. Using QGIS if I ...
2
votes
0answers
96 views

Heatmap on globe - distortion problems

I want to display a heatmap (png) on a globe in an android app. The heatmap is generated programmatically. The heatmap consists of colored circles. I upload the png to geosserver and display it as ...
0
votes
1answer
50 views

projection for high accuracy small areas

I need to convert (lat,long,height)points into a cartesian system for an area as small as 40kmx40km or even 10kmx10km. I'm currently using the UTM projection, but there are some issues regarding ...
3
votes
2answers
276 views

EPSG:3575 projected bounds

I've been trying to find out what the projected bounds are for EPSG:3575 but have not been able to find a definitive answer. Normally, I'd just use the values from EPSG.io but when I tried these in ...
3
votes
1answer
281 views

Local Ortho projection to Proj4

We are trying to use proj4 to project a local coordinate system to EPSG4326. We believe we have most of the string created correctly in QGIS and as follows; +proj=ortho +datum=WGS84 +lat_0=40....
1
vote
1answer
918 views

ArcGIS Desktop, shapefile and EPSG code

Why a shape file with CRS WGS_1984_UTM_Zone_22N en Arcgis has a differrent prj file than the EPSG:32622:WGS 84 / UTM zone 22N WKT ? Can I replace Arcgis .prj file with EPSG:32622 WKT ...
1
vote
1answer
202 views

GDAL does not recognize EPSG code of a shapefilefile regrojected by ogr2ogr

I am using ogr2ogr to reproject shapefiles. For example: ogr2ogr -s_srs EPSG:1234 -t_srs EPSG:3857 dest.shp srs.shp ogr2ogr then creates dest.shp, dest.shx, dest.dbf and dest.prj as expected. The ...
3
votes
1answer
578 views

Using Cassini-Soldner projection in QGIS?

I have a shapefile in a Cassini Soldner reference system centered in Monte Mario (Italian cadastre map). I want to insert these data inside QGIS in order to compare data with aerial images. When ...
1
vote
1answer
55 views

Why prj2epsg cannot resolve PostGIS SRText?

In many places I have seen people referring to http://prj2epsg.org (here, here). I have used this service too, however, the service cannot uniquely identify an EPSG code alway. I understand that it ...
3
votes
1answer
144 views

Misalignment of EPSG:4326 and EPSG:3399 coordinates

I'm having a QGIS project in local coordinates (Gauss-Kruger, EPSG:3399) with some layers in the same reference system. On top of that, I want to display point coordinates, which I digitized using ...
1
vote
1answer
48 views

Guessing unknown projection of Webapp

I have a series of points around the greater london area (may be also around 100-200kms away from it) like those here in the format Lon, Lat: 43032.1,32681 95816.5,34473.8 15439.3,-13987 The ...
0
votes
1answer
240 views

Ogr2ogr trying to import and convert shapefile to EPSG:3857

I'm attempting to import a shapefile (along with .prj file) to MySQL using Ogr2ogr and using the t_srs option set to EPSG:3857 (the default for Leaflet and Google Maps) but I'm getting odd results, eg:...
3
votes
1answer
263 views

Why does projection WKT differ between osr.SpatialReference and gdalinfo

I am writing a simple geotiff using the GDAL python bindings, but the projection WKT reported by gdalinfo differs from the source. The script from osgeo import gdal, osr import numpy # Create ...
0
votes
1answer
340 views

Coordinate Transformation in Gdal/Ogr (EPSG:4326 to EPSG:3068)

I think gdal/ogr(/proj4) doesn't recognize epsg:3068 right? Here is what I tried: public static void transformSRS(){ // creating EPSG:4326 SpatialReference sourceSRS = new ...
2
votes
1answer
125 views

Rotation matrix in the EPSG

I use Proj4j for a WebGIS and I have to create a new ESPG. I tried on QGIS to convert coordinates from a local system (in Greece) to a world coordinates system. First, I have to do a 2D ...
2
votes
2answers
228 views

Find unit of EPSG-Code

I need a way to find out the unit of an EPSG-Code (e.g: meter) from java (ogr, gdal, osgeo?) but any other approach would be fine as well. I want to do something like: if(epsg.unit==meter){ do ...
5
votes
2answers
14k views

Change OpenLayers 3 view center

I'm using OpenLayers 3 to interact with some maps. I first declare my map: map = new ol.Map({ target: 'map', layers: [ new ol.layer.Tile({ ...
1
vote
0answers
240 views

Leaflet CRS.Simple or CRS.EPSG3857 conversion Problem

I'm using v-leaflet (0.61) , a vaadin plugin, to visualize some layers over a map. Clicking on the map, I create a wms query to geoserver. The query needs some parameters and one of them is the bbox. ...
1
vote
0answers
242 views

Show a kml (which uses longitude and latitude EPSG:4326) in “google/OSM” projection (EPSG:3857) in open street map

I am showing a kml layer, over OSM. The points in the kml are latitude/longitude (EPSG:4326). I don't have to convert any points or anything, it all just works. Great! Now, the client also wants to ...
0
votes
3answers
340 views

Converting .kml to different projection in qgis not working

I have run into a slight problem it would seem. Yesterday I downloaded qgis in the hope that it could convert a .kml overlay of some administrative boundaries from EPSG:3857 (Google maps) to EPSG:...
1
vote
1answer
650 views

Is there an EPSG code to specify WGS84 in (lon,lat) order instead of (lat,lon)?

Is there an EPSG code like EPSG:4326 or EPSG:4329, but that specifies (lon,lat) order instead of (lat,lon)? I've tried exploring the websites http://spatialreference.org and http://epsg-registry....
1
vote
0answers
64 views

Why do I get unexpected coordinates after converting EPSG 102014 to EPSG 4326?

I have this Europe map (EPSG 102014) and I am trying to convert it to EPSG 4326 using geoconverter.hsr.ch After the conversion is done, I expect that coordinates are in the range of -180,180 and -90,...
1
vote
0answers
135 views

How to change Axis Order when transfering data from WFS to Postgis DB

I am using GeoKettle to transfer data from a WFS service to a Postgis DB. The projection of the geometries is WGS 84 : GEOGCS["WGS 84", DATUM["World Geodetic System 1984", SPHEROID["WGS 84", ...
1
vote
1answer
2k views

Convert EPSG:3068 to WGS84

So I have a GeoJSON with EPSG:3068 and I would like to convert the coordinates to WGS84(EPSG:4326). I could also convert them before I write them to GeoJSON. I could not find an algorithm for the ...
2
votes
1answer
1k views

math formula for transforming from EPSG:4326 to EPSG:3857

is there any math formula for transforming from EPSG:4326 to EPSG:3857 ? i want to implement it in php code
2
votes
1answer
219 views

Which EPSG for UTM with 8 digits in QGIS

I have a UTM datasets with 8 digits, so the first digits are 32 (for UTM Zone 32N), but which EPSG should I use to get the data at the right spot in QGIS in a 6 digits system. If I want to transfer ...
3
votes
1answer
1k views

Definitive list of Proj4 supported coordinate systems

I need to determine the minimum set of coordinate systems supported by all tiers of my project's stack. I have a list of EPSG codes supported by Oracle and GeoServer but I'm having trouble finding a ...
0
votes
1answer
721 views

Equivalence of EPSG:3857 for MapInfo 9.5

I have a raster projected on EPSG:3857 with QGIS. I have image registration in Mapinfo but there is no projection for EPSG:3857. Do you know the projection that I need to use?
1
vote
1answer
188 views

WFS with EPSG:3301 projection using Leaflet

I am adding WFS points to Leaflet map, but don't see them on the map, however in console I see that all points I wanted is here with all properties and geometries. But the problem here is in ...
3
votes
2answers
565 views

How to make QGIS recognize EPSG:31468?

I have Shapefiles without a CRS (e.g. without .prj file). I would like to set the CRS (EPSG:31468) before I pass the Shapefiles. I tried the following: Setting a .prj file manually with the string ...
1
vote
0answers
17 views

How to add an unknown CRS to QGIS? [duplicate]

I wonder if there is an option to add a CRS to QGIS which is not listed in the internal database of the program. I read that PostGIS allows adding a custom CRS.
3
votes
1answer
98 views

How to define custom projection EPSG:5714 in QGIS

I have a series of raster files with the CRS EPSG:5714. I need to define this CRS in QGIS but I'm fairly new to this and have no idea how to define the proj4 CRS for this. I searched at ...
0
votes
1answer
79 views

Can't save map with different projection in QGIS

I'm using QGIS 2.4 and am opening a shapefile I downloaded (specifically from: http://www.naturalearthdata.com/http//www.naturalearthdata.com/download/110m/physical/ne_110m_coastline.zip). What I ...
0
votes
1answer
409 views

The ratio Pixel distance to geographical distance?

I have had this problem for several days and I have no idea to solve it. The problem is that I am trying to find out the length and width of ships from a Bing map. I got the location point (lon, lat)...