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

learn more… | top users | synonyms

1
vote
1answer
31 views

How to quickly change EPSG in QGIS (Openlayers; 4326 vs. 3857)

I'm using Qgis 2.12.2-Lyon on Ubuntu 14.04 LTS. With the OpenLayers plugin I added some OpenLayers to my Canvas. I usually use the WGS 84 (EPSG:4326) projection for my project, but I have to switch ...
1
vote
0answers
19 views

Foreign Key error, creating new splite db?

Attempting to use a plugin in QGIS (midvatten) that utilizes splite. I am attempting to create a db in a different EPSG than the plug in defaults to, im getting "foreign key constraint failed" as my ...
1
vote
0answers
27 views

In OpenLayers 3, transformExtent to EPSG:8155 produces error

I'm trying to get the extent of a map using OpenLayers 3, so that I can use it in a CQL filter to limit the area of the WMS request to the area currently shown in the map extent. To do this, I have to ...
1
vote
0answers
27 views

Projection Issues - OpenLayers / MapServer / NAD83 State Plane FT

I am having projection issues with OpenLayers version 2.13 with MapServer and the Proj4 library. Pulling layers in NAD83 State Plane Feet projections on top of an OSM or MapQuest Base Map in Google ...
0
votes
1answer
18 views

wrong coordinates for wfs MultiLineString from geoserver

I have a leaflet application and I want to display some WFS layers coming from Geoserver. In Geoserver, I declare my layer with a "native SRC" EPSG:2154, and with a "declared SRC" EPSG:4326 and set ...
0
votes
1answer
84 views

OpenLayers 3 display wfs EPSG:4326 on EPSG:3857 map

Is it possible in OpenLayers 3 to project an EPSG:4326 wfs vector layer on to say a MapQuest EPSG:3857 map? I've tried the following code (modifying this example Open Layers 3 wfs example, but the ...
6
votes
2answers
181 views

What is the difference between spatialreference.org catalogs: EPSG, ESRI, and User-defined?

I'm trying to understand EPSG codes. I've been to the spatialreference.org site, and in its "about" link, it states: "There are currently three distinct catalogs of spatial reference systems on this ...
2
votes
1answer
129 views

Is it possible to visualize EPSG:102020 and EPSG:3857 at same time in QGIS?

Is it possible to visualize EPSG:102020 and EPSG:3857 at same time in QGIS? If is possible, how? Why some EPSG permit on the fly transformation and visualization and other don`t?
1
vote
1answer
24 views

Get pixel geo info according projection and map extent

I would like to know if it is possible to calculate the geographic coordinates (lat, lon) for a pixel specified by its x/y (top-left) cartesian coordinates in a map image/raster? The datum and ...
0
votes
1answer
96 views

Transforming from EPSG:2154 to EPSG:3857 using ProjNet4GeoApi/Proj.net, C#

I don't have much experience with GIS. Here's are my projections defintion: private Dictionary<CoordinateSystemStrings, string> CoordinateSystemStringDictionary = new ...
2
votes
2answers
76 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 ...
0
votes
1answer
40 views

Converting from lat/long to EPSG:2154 using ProjNet4GeoAPI?

I'm not experienced with GIS. I received long/lat data and need to convert them to GIS. Here are code examples from the library ProjNet4GeoAPI : ...
2
votes
1answer
61 views

Converting from lat/long to EPSG:2154, in C#?

I don't know much about GIS. I'm working in C#. I'm receiving latitude/longitude data and need to convert them to EPSG:2154. I've done some web search but I'm still not sure where to start. Is there ...
0
votes
0answers
52 views

published raster with custom coordinate system to geoserver (comes in as EPSG 404000), but it won't overlay with other layers?

I have an ecw file that is an aerial photo in a custom coordinate system. When I publish to geoserver, it specifies the EPSG as 404000. It seems like this isn't actually storing the coordinate system ...
2
votes
2answers
121 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 ...
0
votes
0answers
64 views

Saving shapefile using GeoTools?

This is my first time dealing with the GeoTools library and not sure how to troubleshoot the issue. I am trying to save a shape file using the library but I get the following stack trace: ...
1
vote
2answers
51 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 ...
0
votes
1answer
85 views

layers don't match on OpenLayers

So in my Openlayers 3.9.0 I use Bing Maps and OSM layers, they both are EPSG 3857 var layer = new ol.layer.Tile({ source: new ol.source.OSM({}) }); var bingMapsAerial = new ...
2
votes
1answer
97 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
39 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, ...
0
votes
1answer
51 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
127 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 ...
2
votes
3answers
88 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
29 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?
0
votes
0answers
26 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
30 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
129 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
1answer
176 views

GeoTools, convert CRS for Google Maps

I'm trying to use GeoTools to convert coordinates from EPSG:3857 to various CRS, in order to display WMS layers on a Google Map. For example, I want to display a layer in the EPSG:4326 CRS. I have ...
2
votes
1answer
228 views

How to access Leaflet EPSG:3857 coordinates?

I read everywhere that Leaflet is internally using a spherical web mercator (EPSG:3857), but whatever I try I get either Lat/Lon (EPSG:4326) or strange coordinates I dont understand: ...
0
votes
2answers
322 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
185 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 ...
1
vote
1answer
106 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
74 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
0answers
34 views

Why can I publish a layer in Geoserver using these two different projections?

I have a shapefile with this projection in the .prj file GEOGCS["GCS_WGS_1984", DATUM["D_WGS_1984", SPHEROID["WGS_1984",6378137.0,298.257223563]], PRIMEM["Greenwich",0.0], ...
0
votes
1answer
45 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
187 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 ...
1
vote
1answer
126 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
313 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
43 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
171 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 ...
3
votes
1answer
122 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
37 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
170 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, ...
3
votes
1answer
149 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
231 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
43 views

Geowebcache alias for custom projections

Is there a way to configure a projection alias in geowebcache? E.g. if I would like to advertise projection EPSG:25833 and EPSG:32633 to the client, while requesting tiles from the backend using ...
1
vote
1answer
72 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
165 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 ...
1
vote
1answer
305 views

How to convert distance in meters(EPSG:28406) to EPSG:900913 with OpenLayers?

For point I use OpenLayers and transform(): numZona = Math.ceil(parseFloat(lon)/6)); Proj4js.defs["EPSG:28406"] = '+proj=tmerc +lat_0=0 +lon_0='(parseInt(numZona)*6-3)+' +k=1.000000 ...
1
vote
0answers
179 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. ...