Questions tagged [epsg]

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

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33 views

Incorrect projection when converting GeoJSON to shapefile via OGR2OGR

I've created a GeoJSON file whose projection, for example, is EPSG:2154 / Lambert93. I've converted it to shapefile using OGR2OGR. But .prj file includes WGS84 description instead of Lambert93, as ...
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71 views

Where do I find CRS axis names?

When using the SUBSETTINGCRS argument of a WCS query, one needs to provide the axis labels in the subsetting CRS. This answer to GeoServer does not work WCS parameters "subsettingcrs" and &...
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Leaflet with EPSG:3765; GridLayer.js:661 Uncaught Error: Attempted to load an infinite number of tiles

I am not sure about Leaflet 1.7 possibility to show layers in EPSG:3765. Not sure because from Leaflet docs it is not possible but I found something like Proj4Leaflet and it looks like it can... I get ...
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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 ...
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Is there an alternative to prj2epsg.org?

In the past, we used prj2espg.org to find the srid/espg code from .prj file of shapefiles in order to import them in PostgreSQL. Unfortunately, the website seems to be down since November 2019 (...
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49 views

Cannot set EPSG code in LAS - lidR

I'm trying to reproject a LAZ file from EPSG 2226 to EPSG 6418. The reprojection works fine (I followed this: Can I re-project an LAS file in LidR) but I cannot store the information onto the LAS ...
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209 views

Convert UTM zone into EPSG code

I have the UTM code 36S and want to convert it to EPSG. Somebody told me that if the UTM code contains 'S', then the first three digits of the EPSG code are 327, and if the UTM code is 'N' then use ...
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95 views

How to transform location data from Lamber (EPSG:31370) to GPS (EPSG:4326)?

Sorry if my way of writing is wrong, I'm a data scientist and I have little to none experience in GIS. I would like to use an open dataset (from http://opendatastore.brussels/fr/ to be precise). It ...
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641 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 ...
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What is the EPSG for the S-JTSK/05 system?

Preface: Some time ago the Czechoslovakian used the S-JTSK (Souřadnicový systém Jednotné trigonometrické sítě katastrální, lit. "Coordinate system for unified trigonometric cadastral networks&...
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Add a custom SRID to Spatialite

I'd like to create a spatialite database and load it with shapefiles using the Mississippi Transverse Mercator (MSTM) projection, but it doesn't have an EPSG definition in the spatialite library of ...
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45 views

Does OSGB36 (EPSG:27700) preserve area?

What I mean is, if I have a map which uses the OSGB36 (or EPSG:27700) projection, and I draw two areas (let's say polygons) on my map which cover the same area on the map, does this mean that the real ...
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37 views

Using Google Earth to figure out the coordinate reference system from only lon, lat information

Lately, I've been trying to use lat/long information to plot on QGIS without any good results because I lack the correct EPSG code for the coordinate reference system. This is not the case with Google ...
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655 views

proj4js with geocentric CRS

I am developing a little web app to transform coordinates between CRSs. To do that I am using proj4js, but I notice that proj4js can't work with geocentric CRSs. Is there another tool similar to ...
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34 views

Convert x,y,z origin of SRS to longitude and latitude and place on map

I have a file with this metadata - <ModelMetadata version="1"> <!--Spatial Reference System--> <SRS>EPSG:32636+5773</SRS> <!--Origin in Spatial Reference System--&...
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46 views

Name of a custom Goode homolosine projection

What is the specific name of this homolosine projection? I see that America is closer to Europe/Africa than in the typical homolosine.
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EPSG:3575 formulas

I have been trying to find out the exact formulas to convert EPSG:3575 to EPSG:4326 (WSG84) and vice-versa using formulas described here: https://mathworld.wolfram.com/LambertAzimuthalEqual-...
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1answer
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gdalwarp from epsg:4326 to epsg:3413; error: Too many points failed to transform, unable to compute output bounds

GDAL ver     : GDAL 3.1.1, released 2020/06/22 Python         : 3.8.0 OS:               : windows 10 Input file       : 7200 x 3600 GeoTIF in epsg:4326 File link        : [https://www.dropbox.com/s/...
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How to manage different SRID data in same database table? [closed]

My data is in two different cities and three different EPSG code area. (Database is PostgreSQL/PostGIS.) So I think, I can not set SRID values by data. Making 3 different table is difficult. How can ...
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EPSG codes for projections to use when computing the area of global polygon sets in python env

The general answer to this question is "Use any equal area projection in units of meters that covers the world". Python code needed to make use of this is short and sweet: import geopandas as gpd ...
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raster2pgsql populates wrong authority

I'm trying to load a raster in .tif format that is in EPSG 42303. I use the following raster2pgsql -d -C -M -I -s 42303 -t 100x100 filename.tif schemaname.tablename | psql -d dbname -U username The ...
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29 views

CRS transformation WGS 84 UTM 30N (EPSG: 32630) to ETRS 89 UTM 30N ( EPSG: 25830)

I have a coordinate table with EPSG 32630 (WGS 84 UTM30N) and when I try to transform them to EPSG 25830 (ETRS 89 UTM30N) the difference between them are marginal. I´m using QGIS doing the following ...
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51 views

QGIS 3.12 issues unknown CRS on vector shapefile layer

I'm trying to export in GeoPDF my map from QGIS 3.12. After updating QGIS 3.6 to 3.12 can't recognize the project CRS EPSG 3120 for raster file and vector layer which is the color layer then I tried ...
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71 views

Difference between EPSG:4326 and EPSG:32637?

I'm exporting data from a program into a .csv for RStudio, which will then go into ArcMap. I haven't done this before and I've been given two projection options which are: WGS 84 [EPSG:4326] WGS 84 / ...
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36 views

EPSG Error Trap

I'm using pyproj and I'd like to run an error trap on the EPSG code. Specifically, if the user enters a EPSG code that is not in the proj database, it would provide a Boolean flag I can check before ...
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PROJ4 string for Gauss Conform Clarke 1880

This CRS was used to produce a set of 1:250 000 topocadastral maps for South Africa. I can't seem to find an appropriate PROJ4 string for it online.
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las2las X scale and offset combination error

I am trying to reproject a section of a pointcloud from UTM30N (EPSG 32630) to OSGB36 (EPSG 27700). My pointcloud has no crs assigned to it having been saved from Cloud Compare. It originated as a ....
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55 views

Projecting coordinates into different EPSGs gives inconsistencies

I am using 3 EPSGs: 4326 (WGS84), 3857 (Mercator) and 3035 (EU Copernicus dataset). I am trying to easily convert coordinates from one system to any other. To do so, I wrote a Coordinate class with ...
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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 ...
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96 views

Difference between EPSG:4236 and EPSG:4326?

I know that the EPSG 4326 is the WGS84 (standard) projection, and is the projection that I am using in my code, but by a mistake, I have wrote 4236 and this worked in the code. The question is what ...
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128 views

Calculate intersection area in square meters of two polygons that use EPSG:4326 in Python

I have EPSG:4326 data for polygons and would like to calculate the intersection of these polygons in square meters. Is it possible to do this without any transformations from EPSG:4326 to some other ...
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80 views

Coordinate system Italy Sicily

I've received a .dxf file of a small area in Sicily. Now I have a problem with the coordinate system. It's not the usual European UTM or similar. I absolutely cannot find what coordinate system it is. ...
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61 views

Getting accurate measurements in EPSG: 27700 using QGIS 3.10

When taking measurements in a project where all layers are EPSG:27700 (with elipsoid Airy 1830) the measurements produced are incorrect. Is there a better CRS for distance measurements in the UK? Or ...
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20 views

L.imageOverlay does not fit with tiles created with maptiler

I have a vector graThe files have the same size ratio and the same bounding boxphic. I would like to partially display this graphic as a basic map. I exported most of the layers of this vector graphic ...
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29 views

Determine if a coordinate reference system is projected from Proj text

I'm looking for a reliable way to determine if a coordinate reference system is projected or not based on its Proj text. As examples I'm looking at EPSG:3857 and EPSG:4326 EPSG:3857: +proj=merc +a=...
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1k views

Which BC Albers should I use and is there any difference?

I was about to calculate the area of some polygons and before I did I did some research. I found that the area of the polygon will be represented in the units of the projection used. So I did some ...
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1answer
49 views

How to check for PostGIS Function Support Matrix for new custom EPSG imported from EPSG site

I need a support for CRS that was not available in PostGIS 2.5 so I looked up into the EPSG site they had simple easy straight forward insert query to add EPSG so I did that now how do I check or know ...
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61 views

Cannot decode CRS from executable JAR with GeoTools

I decode a CRS from its EPSG code using: CoordinateReferenceSystem crs = CRS.decode("EPSG:3035"); This works like a charm, but when the same line of code is executed from an executable *.jar program,...
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207 views

List all EPSG projections to serve it on the client side

I am building web app that allows user to convert and reproject their spatial data and then download it. I am using flask and ogr2ogr to achieve this. Now, I want to give users a list of EPSG ...
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Using different EPSG in QGIS projects

I have 2 projects, with data from different regions and with different EPSG, 1 with EPSG 31983 and the other with EPSG 31984, according to the folder structure shown below, in Windows explorer. In ...
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1answer
327 views

Change Axis Order when transferring data from WFS to PostGIS DB

I am using GeoKettle to transfer data from a WFS service to a PostGIS database. The projection of the geometries is EPSG:4326 : GEOGCS["WGS 84", DATUM["World Geodetic System 1984", SPHEROID[...
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Missing EPSG:3035 in GDAL/QGIS

My fresh QGIS 3.10.3 installation from https://qgis.org/debian-ltr eoan main via apt install on Ubuntu 19.10 is missing (at least) one CRS. More specifically, I cannot find/select the EPSG: 3035 ...
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Converting UTM to Lat/Long with a geoJSON file in pyproj

I am trying to convert a geoJSON file in UTM (EPSG 29902) to WGS84. I've seen other examples online which show how to use the transform function in pyproj; however all the ones I have seen are for a ...
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1answer
75 views

Reprojecting CRS from Geocode API fails to match shapefile CRS

I have a shapefile obtained from this link. library(rgdal) library(rgeos) dir <- tempdir() unzip('~/Downloads/4106902.zip', exdir = paste0(dir, '/4106902')) shape <- readOGR(paste0(dir, '/...
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R: Why is my map including the entire world WSG84 space, when all I want plotted is New Zealand?

This seems to be a very easy problem to solve, but about two hours of searching hasn't led me to the answer. I have a GIS file that I downloaded in WSG84 ESPG:4326. I read in the file using readOGR. ...
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436 views

How do coordinate reference systems and projections relate to each other?

I would like to resolve some general confusion of mine concerning the terms (and concepts) of "coordinate reference system" and "projection". The way I initially understood these terms is that a CRS ...
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Get length of a line stored in SQL Server Geometry column with srid 4326

I have some spatial data stored in SQL database geometry column called sp_geography (The field is defined as Geometry). The SQL below: f.sp_geography.STLength() returns, for example 0....
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Is there a relation between EPSG 4326 coordinates and meters?

I have information about different locations in a Java List. Each location has it's coordinates (longitude and latitude) For example: longitude = 2.37364 latitude = 42.38473 I need to look up using ...
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1answer
383 views

Transformation problem WGS84 (EPSG:4328) and ETRS89 (EPSG:4258) in QGIS

I want to transform vector points from EPSG:4326 to EPSG:4258 and vice versa for survey application. Currently the difference between the two is about 70 cm in xy direction. Using QGIS to transform ...
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62 views

Use high precision to convert image from one EPSG defined CRS to another

This question is based on another question: I'm converting multiple images (.jpg or .png) from one EPSG defined CRS system to another, e.g. from EPSG:31255 to EPSG:25833 (on a server within a Java app)...

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