Questions tagged [epsg]
A group that maintains a freely available database with standard codes for coordinate systems, datums, spheroids, units and the like
471
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Interpreting EPSG:4326 coordinates in a .tif file for a DEM
I am working on a piece of algorithm where I need to have access to ground altitude values from a digital elevation model. The model that I am using is SRTM1, which I access to by using the elevation ...
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Understanding Equal Earth Projection (EPSG:8857)
I am considering using the Equal Earth Projection (EPSG:8857) in a project because it seems to meet the requirements I am after.
If I understand correctly, because this is an equal-area projection ...
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EPSG transformation just swaps coordinates in GeoServer GetFeature request
First time I've done much of this so I may not be using the correct terminology.
Also, I'm aware it could probably be resolved with post processing, but I'd like to fix it with this context, if ...
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CRS selection for global product with minimal area distortion
I am building a model that takes data from different sites around the world as input where each pixel has a 10m resolution. I am now seeking a CRS system that works best for my use case. The ...
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Bad values with gdalwarp and "aliased" coordinate transformation
I've strange values using gdallocationinfo on vrt with coordinate system transformation.
Here is my use case, maybe you can help to understand what I did bad or misunderstood
1) I've got a bunch of ...
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Raster crossing anti meridian in QGIS
See the raster overlayed in QGIS below:
I am trying to project a GeoTiff in QGIS that crosses the anti meridian, but the area circled in red in the above picture is exactly 180/-180, so there is some ...
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29
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Custom Projection with Offset from EPSG:28350
our local grid has
easting offset 700_000
northing offset 7_500_000
within EPSG:28350 origin
How can I extend EPSG:28350 OGC WKT below to add the above offset?
PROJCS["GDA94 / MGA zone 50",
...
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Identify EPSG code from image
We made a project where we asked students to draw things on a map. Now I would like to import the results into QGIS, but I am unable to find it. I used a picture but cannot find the name of the ...
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GML axis order with EPSG-Code 31468 and 5678
EPSG 31468 and 5678 basically mean the same: DHDN / 3-degree Gauss-Krueger zone 4. The difference is the axis order.
EPSG 31468: northing-easting
EPSG 5678: easting-northing
In GML you can define a ...
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Availability of www.opengis.net CRS database
In OGC services coordinate reference systems are often referenced by their OGC URI, e. g. http://www.opengis.net/def/crs/EPSG/0/4326
Those URIs point to XML documents that include more information.
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Availability of EPSG CoordSystem API database
In OGC services coordinate reference systems are often referenced by their OGC URI, e. g. http://www.opengis.net/def/crs/EPSG/0/4326
Those URIs point to XML documents at https://epsg.org/api/v1/...
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Converting .shp polygon from EPSG:4326 to EPSG:3857
GIS newbie at a loss for solutions here.
I've drawn and mapped out a shapefile with 51 features in QGIS based on administrative region data which has been in EPSG:4326. I would now want to convert ...
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How to extract information from a shapefile with the command ogrinfo in a machine readable way
I am looking for information like the SRID/CRS for a shapefile in an automated way.
I know that by using ogrinfo path/to/xxx-filename.shp yyy-layer -so I can see some output with indentation left to ...
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Different OGC WKT strings for EPSG:3135 in reference sources
I found two sources for getting WKT strings:
https://www.spatialreference.org/
https://epsg.io/
But there are differences in OGC WKT string in these two sites for coordinate system EPSG:3135. The ...
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What does the SMAP grid (EPSG: 6933, EASE-Grid 2.0) looks like?
One of the projections that SMAP (Soil Moisture Active Passive) used is EPSG: 6933 (Global, Equal-Area; EASE-Grid 2.0). For the 9-km resolution grids, the earth data website says the grids has 3856 ...
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Reproject EPSG:4326 to entire hemisphere polar stereographic. No EPSG code available?
I am trying to gdal reproject a series of WSG84 (Lat/Lon EPSG:4326) GeoTiff into North Pole stereographic projection, covering the entire northern hemisphere from the equator up to the pole at 90 ...
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QGIS load WFS Layer into WMS based Map shows wrong position
I experienced the problem, that I tried to load a WFS onto a WMS based Map. I double checked the CRS which is EPSG:25832 for either the Map and the WFS Information within the source and my project. ...
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31
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Look up table for 3D to 2D EPSG CRS
I would like to write a function (in Python) that receives a 3D EPSG CRS and returns the horizontal EPSG CRS equivalent.
Eg. Receiving 7415 (Amersfoort / RD New + NAP height) -> Returning 28992 (...
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Calculating distance discrepancy: EPSG 3112 Projection VS GeoDesic (Karney), is ~0.5% difference normal?
I have lat-lng coords in EPSG:4326, and I'm calculating the distance between them (in metres).
Since these are in Australia (and Australia wide, therefore no specific MGA zone projections), I'm using ...
2
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3
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508
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What is the right EPSG CRS code for the United States?
This is my first experience with US cartography. I downloaded the US states from here
https://www.census.gov/geographies/mapping-files/time-series/geo/carto-boundary-file.html
(the layer is ...
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4
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157
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Getting EPSG CRS code from text information "WGS 84 / UTM zone 31N"
I have this text information regarding a CRS: "WGS 84 / UTM zone 31N".
I need to get the corresponding EPSG code or create the corresponding CRS object with PyQGIS.
I could use the ...
3
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1
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Choosing CRS for area of interest of my project
I've been searching through several web pages and haven't found an answer. I work in QGIS, usually with EPSG:25830 because my projects are mainly located in Spain but when representing a larger area I ...
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How to create buffers in meters for locations around the world
Disclaimer: I am very new to geographic calculations.
I have a location dataset (points long & lat) for events that happened around the World. I want to create 5km rings around these locations ...
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2
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1
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147
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Georeferenced image not showing in QGis
I am trying to get a Georeferenced image into QGis project, but it does not work.
The georeferenced image has 81 points, and I've set the CRS to EPSG:3035 (the same as the project).
If the QGis ...
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1
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96
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Limitations of coordinates transformations
In order to apply shapely.affinity.scale (see documentation) I have had to transform a series of geodetic coordinates to projected coordinates, see python - UserWarning: Geometry is in a geographic ...
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Is it possible to have a combination of horizontal and vertical CRSs with different distance unit systems?
For example, please consider a combination of EPSG:6360 (NAVD88 height (ftUS)) as vertical CS and EPSG:6596 (NAD83(2011) / Washington North(metre)) as horizontal CS.
These two CRSs have different ...
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Use of Windows symlinks with ArcGIS Pro
In my workspace I have a folder with a large amount of *.tif files. They are without header, so without spatial reference. From that I made symlinks to these files in 2 separate locations. In first ...
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Projection system that use in North America (USA, canada, Mexico, etc) like in Europe use EPSG:3035?
Is there a same projection system that use in North America (USA, Canada, Mexico, etc), Asia, and Africa like in Europe use EPSG:3035? which coordinate system or projection in metric system for North ...
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353
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Robinson projection in GeoPandas
How can I apply Robinson projection in a GeoPandas plot?
import geopandas as gpd
world = gpd.read_file(gpd.datasets.get_path('naturalearth_lowres'))
world.plot(column='pop_est')
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35
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Converting Raster to new projection in QGIS
I received an ECW file from a local City Hall that was created on EPSG 6893.
I need a way to convert it to EPSG 3844 so we can use it in Autocad MAP3D. But I am not able to find a way to export the ...
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2
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169
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Convert NAD_1983_ALBERS to WGS 84
Recently I am working with US wetlands data, https://www.fws.gov/wetlands/Data/State-Downloads/NJ_shapefile_wetlands.zip
Data is in NAD_1983_ALBERS projection, and I want to transform it to lat/long ...
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1
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151
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Different spatial coverage in scenes downloaded from USGS LANDSAT data
I am using M2M Python API to download scenes of Landsat 8 data for North America region, as shown in the code snippet below.
datasetName = "landsat_band_files_c2_l1"
spatialFilter = {'...
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1
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EPSG code has stopped working with pyproj.Transformer.from_crs, but still works with pyproj.transform and pyproj.Proj
My code:
from pyproj import Proj, Transformer
EASE_Proj = 'EPGS:3409'
WGS_Proj = 'EPSG:4326'
transformer = Transformer.from_crs(WGS_Proj, EASE_Proj)
Suddenly produces the following error after ...
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EPSG.io API for PROJ definitions
I am trying to use the EPSG.io API to retrieve PROJ definitions for a CRS. I know that they provide them in their website but the API only seems to be able to retrieve in WKT or GML format. Is there a ...
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79
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Map units relative to what?
If I have a map in say EPSG:2180, which represents coordinates is in meters,
what is this meter reading relative to? To start of map bounding box? World O,O?
What is the right way to reference a meter ...
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1
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293
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Correct parameters to visualize WMS layers in Leaflet and proj4?
I'm struggling to visualize WMS-layers from a REST service using Leaflet. All I see currently is a gray map, not changing anything when moved.
The layers I want to visualize are located in Faroe ...
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2
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150
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Importing squares indicated through EPSG:3035 into QGIS and merge with shapefiles
I have some data on population estimates in Germany for 1km by 1km squares. (Data can be found here: https://www.destatis.de/DE/Service/EXDAT/Datensaetze/bevoelkerung-geo-mobilfunkdaten.html when you ...
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Identifying the EPSG code for projection
I'm trying to convert a dataset that has projection parameters in meters to lat/long coordinates. After researching online and on stack exchange, I came up with a code. I used the input EPSG as 3857 ...
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Different anchor point for EPSG:3857 coordinates [closed]
I have a couple of points in the EPSG:3857 CRS. These points are centered on 0, 0, which is the center of a map. I can convert these points to EPSG:4326 in Javascript with the proj4js library using ...
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523
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How to use deck.gl to render a polygon layer that is using a different coordinate system than the standard LAT LONG?
Background
I am using deck.gl's PolygonLayer to render data that looks like this:
data.json:
{
"someKey": "someValue",
"spatialReference": {
"wkid&...
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1
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134
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Leaflet not getting correct bounding area for NASA GIBS map in EPSG:4326 CRS
I am creating an app using Leaflet and GIBS. The trouble I am having is when I try to use a link from EPSG4326 the bounding box is incorrect.
When I use ESPG3857 the bounding box is correct. Draw ...
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Is Proj4JS-definition for EPSG:3021 (RT90) wrong on https://epsg.io/3021?
I'm writing a webapplication which handles coordinate transformations to and from WGS84.
The defs for EPSG:3021 (RT90, Sweden) from https://epsg.io/3021, looks like this:
proj4.defs("EPSG:3021&...
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137
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Convert EPSG and vertical datum of a DEM file
I have DEM files that are in EPSG:4326 - WGS 84 and use latitude and longitude for coordinates. The elevation units are in meter but use the WGS84 ellipsoid with WGS84 elevation. I want to convert ...
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178
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How is the XY error (m) for GCPs/checkpoints in Agisoft Metashape calculated?
I have a project in Metashape where I am using 8 GCPs and 1 checkpoint. The selected coordinate when importing GCP survey is WGS84 (EPSG::4326).
My school advisor, who is a GIS expert, but has limited ...
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2
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137
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Slope calculation with datasets in different CRS
I have a shapefile containing several zones. This file is in CRS EPSG:32644 (WGS 84 / UTM zone 44N).
I have a DEM file (originally in CRS EPSG:4326 - WGS 84) that I converted to EGM08. The elevation ...
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254
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In which step should we reproject a LiDAR Dataset using LAStools when extracting DSM and DTM?
I have a lidar dataset from which I am trying to extract a DSM and a DTM (in meters) from it for EPSG 32614 (WGS84). Below info:
lasinfo (220926) report for 'C:\LAStools\bin\Data\Cornfield Non\Backup ...
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58
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Multiple transformations within a single projection on epsg.io
I am referring to https://epsg.io/24313
Here, EPSG:24313 is written in bold at the top of the page, and then there are multiple subprojections listed underneath. I am confused about which one to use, ...
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72
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How to project to the Berghaus Star projection in R?
I am looking to recreate the map on the American Association of Geographers logo using R:
However, I cannot find a proj4string or an epsg code for the Berghaus Star map projection. There is an ESRI ...
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220
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Why does conversion from EPSG:4326 to EPSG:9451 only leads to swapped coordinates?
import shapely.wkt
import geopandas as gpd
I have a shapely polygon and a GeoSeries:
p = shapely.wkt.loads('POLYGON((-3 50,-3 51,-2 51,-2 50,-3 50))')
s = gpd.GeoSeries(p,crs=4326)
print(s) returns:
...
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51
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How may one convert from Lo.22/18 Prelim. to Schwarzeck / Lo22/17: EPSG29377?
I am currently georeferencing an archival map with a set of coordinates from a Documents. Some of the coordinates are given in Schwarzeck / Lo22/17, the other points however are given in Lo22/18, a ...
