Stack Exchange Network

Stack Exchange network consists of 174 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.

Visit Stack Exchange

Questions tagged [epsg]

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

1
vote
0answers
43 views

Convert coordinates with Proj4Leaflet from EPSG:25832 to leaflet 3857

I have a wmts server, and try to add this tiles to leaflet with proj4leaflet. My code is here //this one is fine var main = L.tileLayer( 'http://****&zoom={z}&x={x}&y={y}',...
0
votes
0answers
20 views

Choosing EPSG output code?

I am trying to map some data and it is asking for ESPG codes. They are coordinates in Australia and EPSG:4326 seems to work as the EPSG input code. But how do I know what to enter as the output code?...
0
votes
1answer
23 views

Formulation of CRS (EPSG2438 to EPSG4326) conversion in Excel

I have about 14000 points with coordinates EPSG2438 and want to convert the coordinates into WGS84 (EPSG4326). I want to know that is there a way to make Excel formula to convert these coordinates. In ...
2
votes
1answer
76 views

QGIS EPSG value differs from ArcGIS and spatialreference.org

Background: I have both QGIS 3.4.1 and ArcGIS Desktop 10.6.1 installed on the same laptop, Windows 10. I have a polygon shapefile that is projected to Lambert Conformal Conic. Arc states that the ...
0
votes
0answers
20 views

Command line to change altimetric reference with gdal

I want to convert a DEM with the following GEOGCS : GEOGCS["WGS 84", DATUM["WGS_1984", SPHEROID["WGS 84",6378137,298.257223563, AUTHORITY["EPSG","7030"]], AUTHORITY["EPSG","6326"]], ...
0
votes
0answers
27 views

Falsely referenced Geotif (UTM30 with leading number in coordinates) - which EPSG or workaround?

I just got a bunch of old raster-datasets which I have to rework and put into a "presentable" state. For most of them no problem, but one dataset seems to be wrongly referenced - or better: I don't ...
2
votes
0answers
42 views

From ESRI:103300 to EPSG:4326 in SQL Server

This question is more or less a sequel to Performance of joining tables on a geometry column with SQL Server As explained in the above link, I have a shapefile that I upload to my SQL Server DB using ...
1
vote
3answers
80 views

Which coordinate system is the best for a distances from whole USA?

I have about 100 cities all over the USA and want to calculate some distances. According to that I want use one coordinate projection and need to know which one is the best so I can get the most ...
4
votes
1answer
28 views

Get a list of all supported EPSG code from OGR

I need get a a list of all supported EPSG code from OGR/GDAL. I need this becaouse i'm developing a C++ application map, and I need this information to put it in a user form. I read the OGR ...
1
vote
2answers
34 views

Where can I lookup the units associated with an EPSG code?

I'm trying to find a source of information with the default units (meters, ft, ftUS) associated with an EPSG code. I'm currently using spatialreference.org and fetching URLs like this: http://...
0
votes
0answers
41 views

Leaflet, Are Draw Rectangle Coordinates WGS84?

I am using leaflet to develop an web interface for accessing NASA's Climate Hazards Research Group CHIRPS dataset via API (http://chg.geog.ucsb.edu/data/chirps/). In the CHIRPS documentation it ...
0
votes
1answer
22 views

GeoTools MapFrame statusbar set reference system list empty

I'm using geotools.version = 20.0. After debugging the set reference system functionality, the following is executed but the codes list is empty: CRSAuthorityFactory fac =ReferencingFactoryFinder....
3
votes
1answer
35 views

For what ist the epsg-file in the “share/proj” subfolder of the QGIS - installation used for?

In the "share/proj" subfolder of the QGIS-installation there is an epsg-file with definitions of the epsg-codes like this: # DHDN / 3-degree Gauss-Kruger zone 3 <31467> +proj=tmerc +lat_0=0 +...
12
votes
1answer
198 views

Integrating NTv2-transformation in QGIS?

I am wondering what's the correct way to integrate a NTv2-transformation in QGIS. I have successfully integrated a NTv2-transformation in QGIS but I am not sure if it's done the way it's meant to be. ...
3
votes
1answer
281 views

Why do 2 EPSG Codes exist for the same coordinate system?

I sometimes need to publish data in Gauss-Kruger zone 3 and was wondering why there are now the following EPSG Codes which define this CRS. 31467 - DHDN / 3-degree Gauss-Kruger zone 3 31463 - DHDN / ...
0
votes
1answer
113 views

ProjNet. Coordinate reference system transformation deviation

I have a project with C# that contains a CEFSharp viewer showing a webpage with a map that I've created.I'm trying to add a marker in the map sending the parameters from C# to a function in the ...
0
votes
1answer
40 views

Identify EPSG in SQL Server

I have been trying to load a shapefile available at https://www.elections.on.ca/en/voting-in-ontario/electoral-district-shapefiles/open-use-data-product-licence-agreement/download-shapefiles.html to ...
1
vote
0answers
84 views

ERROR 6: EPSG PCS/GCS code 102027 not found in EPSG support files

I am trying to insert spatial data from GeoJSON to PostgreSQL database and before it I am to reproject geom from EPSG:4326 to EPSG:102027. When working on Windows there were no problems with CRS, but ...
2
votes
2answers
62 views

How to Update the EPSG Database of Gdal on Ubuntu?

I have a Ubuntu 16.04 Server, with GDAL 2.1.3, released 2017/20/01. I need to project a Raster to EPSG:7755 which was added way back in 2016. When I use this EPSG code with gdalwarp, I get the ...
1
vote
1answer
77 views

EPSG conversion and image rotation in folium

I'm using Python's folium library (which uses Leaflet) to display images over a map. However, my original data uses EPSG:3035 and folium uses EPSG:4326 (WGS84). There is a rotation when converting ...
2
votes
0answers
35 views

Reprojecting trouble: shapes saved in one EPSG load as another EPSG in QGIS and are 200m off?

I'm in a mixed working environment with some ESRI licenses and several people working with QGIS. For a project, we created data and received data in EPSG 31468 (Gauß-Krüger Zone 4). We now need to ...
0
votes
0answers
39 views

EPSG Geodetic Parameter Registry - SW supporting transformation EPSGs

The page www.epsg-registry.org contains EPSG codes for different transformations (i.e. EPSG:1173, EPSG:1244 etc.). Do you know about some GIS SW (online or desktop), which supports converting ...
2
votes
1answer
43 views

Exporting shapefile layer to KML and CRS specification in QGIS

I've been trying to learn the ins and outs of QGIS for several years now. I am somewhat familiar with the software but certainly not an expert. I have recently downloaded a section of the Canadian ...
-1
votes
1answer
95 views

How does PostGIS project from 4978 to 4326?

I have data in EPSG 4978 (3D Cartesian XYZ using WGS84) and just for kicks, I tried projecting it to 4326 (lon, lat 2D using WGS84). I expected an error but lo and behold, I got a point back. Here's ...
0
votes
0answers
46 views

Importing Shapefile into PostGIS and EPSG of created table is different from Shapefile?

I'm trying to import a Shapefile into PostGIS using the ogr2ogr, but it seems that the OGR is not automatically getting the EPSG from Shapefile. My Shapefile has EPSG 4618, but the table created by ...
1
vote
1answer
83 views

Incorrect distances/area using Python and Shapely

I have a PostGIS table holding cadastral (property) data stored in SRID 3857 (Web Mercator). In Python I want to calculate the length of polygon lines and the area in metres and sq metres respectively....
1
vote
1answer
37 views

POSGAR CRS With Reversed X and Y coordinates

I've been working in the Argentine CRS of POSGAR (Specifically POSGAR 94/Argentina 2 EPSG:22182) frequently and have noticed on a number of occasions that coordinates are provided to me with the X ...
1
vote
1answer
192 views

Geopandas Proj4 reproject to global equal area projection

I have a geoDataFrame with crs {'init': 'epsg:4326'} The data has a global extent and my goal is to calculate the area (in m2) per feature. Therefore I want to reproject the geoDataFrame using the ...
1
vote
1answer
80 views

PostGIS: EPSG 3857 magic number?

When I'm using PostGIS for transforming coordinates from WGS 84 (EPSG 4326) to Web Mercator (EPSG 3857) the result for POINT(-180 0) is POINT(-20037508.3427892 -7.08115455161362e-010) and for POINT(...
2
votes
0answers
81 views

Reprojecting EPSG:5514 to EPSG:3857 for use in Leaflet

I have one JPG (170 MB) and JGW file of a small area projected in EPSG:5514 (Image provider told me.) JGW file: 0.1250000 0.0000000 0.0000000 ...
1
vote
1answer
33 views

Saving Shapefile - Zero Features Error

I am using QGIS 3.02. I opened a GDB file in QGIS and saved it as a shapefile in EPSG: 4326. Now I want to save it in EPSG: 2264 but I am running into an issue. Every time I save it as EPSG: 2264 the ...
4
votes
1answer
98 views

Why ogr doesn't read this kind of prj

I run the code below, that I would hope to return the parameters from projection file (.prj). However it doesn't work as I would expected. I realized that the it isn't working because the some ...
1
vote
1answer
53 views

Extract lat/long from GeoTIFF with Mercator CRS

I have a GeoTIFF file and with gdalinfo command I found the following info: Size is 1200, 1400 Coordinate System is: PROJCS["unnamed", GEOGCS["WGS 84", DATUM["WGS_1984", ...
0
votes
1answer
106 views

What is the projection of my raster?

Continuing what is written in this post, I show gdalinfo output Size is 1200, 1400 Coordinate System is: PROJCS["unnamed", GEOGCS["WGS 84", DATUM["WGS_1984", SPHEROID["WGS 84",...
3
votes
1answer
235 views

Reprojecting EPSG:3412 to EPSG:4326 using GDAL?

I want to reproject "South polar stereographic" projection to "gcs WGS 84". I have tried the solution given to Re-projecting from Polar projection to EPSG:4326? through this commands I am getting ...
1
vote
1answer
103 views

Coordinate transformation results are different between Proj4JS and pyproj

I try to make a coordinate converter using Proj4JS for mobile app, I use this source code. Before I tested conversion for WGS84 geographic and WGS84 UTM, there was not problem with it. I tested ...
1
vote
1answer
46 views

Selection of Projection for a small scale project

I'm quite unsure if this is the right place to ask but I would like to have some advice from experts. I'm working on a QGIS project in a small area in the south of Portugal. I've been questioning ...
0
votes
1answer
43 views

What CRS is used in historical maps on IEG-MAPS

Do anyone know what coordinate reference system is used in set of historical maps of Europe from Leibniz Institute of European History Below sample map from set
2
votes
2answers
84 views

Choosing CRS for metric distance calculations? [closed]

I have the following ArcPy script to calculate total length of Polylines in a Feature Class/Shapefile: arcpy.Project_management('lines.shp', 'lines_projected.shp', arcpy.SpatialReference(TODO EPSG ...
1
vote
1answer
141 views

Formula for transforming from EPSG:4326 to EPSG:3003 or EPSG:3004

This system is used in Italy. I came across this: It says that lambda zero is 9° if it's to epsg:3003 otherwise if it's to epsg:3004 it's 15° I came up with this Java code, but the result is wrong: ...
1
vote
0answers
71 views

Leaflet points off from correct spot on map

I am working on updating our map from OpenLayers 2 to Leaflet. I have my own set of tiles that are working correctly on OL2 but on leaflet any point I draw seems to be incorrect (further south and ...
4
votes
1answer
587 views

Google Earth Engine Reprojection to non-EPSG defined CRS

Is it possible to reproject an image in earth engine to non-EPSG defined coordinates? In particular either Goode Homosline (SR-ORG:7619) or Mollweide (ESRI:54009). Passing either to .reproject() ...
3
votes
1answer
82 views

Analyze the extent of a NTv2 grid

I am using a NTv2-grid for transformation of geodata. The grid can be found here: gsb-file: https://www.lgl-bw.de/lgl-internet/web/sites/default/de/05_Geoinformation/Galerien/Dokumente/BWTA2017.zip ...
4
votes
2answers
161 views

Missing CRS from QGIS 2.18.16

I have installed QGIS 2.18.16 under Linux Mint 18.3. Opening QGIS about, I read that QGIS is compiled against GDAL/OGR 1.11.3, while from Synaptic I read gdal-data as version 2.2.2. The problem ...
1
vote
1answer
48 views

ogr2ogr assigns inaccurate srs in

When using ogr2ogr to export from PostGIS to Shapefile a geometry(PolygonZM, 25832) table, the coordinate references system (SRS) is not accurate. ogrsrsinfo returns the correct SRS (below the SRSs ...
-2
votes
1answer
54 views

How do I get the location from an unidentified coordinate system point?

I'm working in C# and I have this JSON: {"id":429,"name":null,"address":"10 Wooleys La.", "city":"Great Neck", "decadeBlt":0,"totalUnits":12,"propertyType":null, "yea‌​rBlt":0,"expectedCom‌​pletion":...
4
votes
3answers
2k views

Extracting EPSG from a raster using gdal bindings in Python [duplicate]

My goal is to check that a shapefile and raster have the same projection and datum using EPSG number. One can easily extract EPSG number from a shapefile by the following: ds=ogr.Open(r'.......
0
votes
0answers
190 views

EPSG:3857 coordinate + (local offset in meters) = new EPSG:3859 coordinate

Given: The EPSG:3857 coordinate of a well known point on an estate A local cartesian coordinate system covering the estate (Unit: Meters, Alignment: North-East) A second point, defined in the local ...
5
votes
1answer
502 views

Convert Lat/Lon sexagesimal degrees to UTM coordinates

I'm using proj4.js to convert geographic coordinates (degrees, minutes and seconds) to UTM coordinates (ETRS89 Zone 30). When I get my coordinates result of the transformation I'm checking them with ...
1
vote
2answers
70 views

Does transforming postGIS geographic data to EPSG:4326 , makes them geographic?

I am reading this about "Clustering on Indices" and in 25.2 says that The geohash algorithm only works on data in geographic (longitude/latitude) coordinates, so we need to transform the ...