Questions tagged [coordinate-system]

A reference framework consisting of a set of points, lines, and/or surfaces, and a set of rules, used to define the positions of points in space in either two or three dimensions. This tag also refers to cartographic projections and coordinate system transformations.

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15 views

A WMS layer does not seem to load correctly in projection

No idea how to ask this I am quite new to GIS. I am trying to load this WMS service https://geoservices.informatievlaanderen.be/raadpleegdiensten/GRB-basiskaart-grijs/wms with EPSG:3812 but every time ...
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13 views

QGIS Custom Projection Parameters Issue

This is similar to this rather old post for a much older version of QGIS, but I'm still getting the same behaviour: Defining new custom projections in QGIS? Basically I'm defining a new Custom ...
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Working with HDF4 file in GDAL

I'm definitely not the most experienced GDAL user, but I already struggle for quite a while now getting my head around the hdf4 file format in GDAL. The thing is that I have a directory with many hdf4 ...
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29 views

Geolocation of L2G-Lite MODIS data

I would like to know if I am processing an L2G-Lite MODIS product, do I still need to geolocate, or reproject it to EPSG:4326? Or can I just leave it?
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31 views

Custom Projection and Alignment of Large-Scale RGB Time Series Mosaics

We are running an experiment to observe time to germination and growth in potato plants in a greenhouse. To that end we have built a gantry system equipped with an RGB camera to capture the plants ...
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296 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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1answer
57 views

Convert image from one EPSG defined CRS to another

I've got a lot of image files (.png or .jpg) that I want to convert from one EPSG defined CRS system to another, e.g. from EPSG:31255 to EPSG:25833, on a server within a Java app. For each image I ...
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26 views

Transform coordinates [closed]

I want to transform LAEA EPSG:3035 <-> WGS84 EPSG:4326. I tried dotspartial, this works fine, but I just need a small function to do this. Can anyone help me out for that? I am coding in Visual ...
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1answer
30 views

Mapping points in PRS92

I am assisting on a project in the Philippines to map some areas. I've been given a sheet the has points, but its unlike anything I've seen before and have no idea how to put it in a format that would ...
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5answers
8k views

How to reproject raster from 0 360 to -180 180 with cutting 180 meridian

I have a geotiff raster image that has a coordinate system with longtitudes from 0 to 360. The horizontal center of the image is 180 longtitude. See image below: I want to transform it to EPSG:4326 ...
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1answer
4k views

Projecting from Bessel 1841 to WGS 1984

I am having problem with projecting my counties which are in GSC_1841/Hermannskoegel to WGS_1984 in ArcGIS Desktop 9.3. I tried the basic "project" with importing the existing coordinate system but ...
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22 views

Converting Gauss-Krueger to Lon/Lat in R

I have sets of Gauss-Krueger coordinates (zone 3) that I'd like to transform to longitude and latitude in R. Here's an example: library(sp) coord_gk <- data.frame(GK_R = c(4555277), ...
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1answer
78 views

How to use gridfiles (*.gsb) in QGIS 3.10.0-2

It seems that the solution previously given does not work anymore: How to use gridfiles (*.gsb) in QGIS Does someone know how to add new transformations in using gridfiles *.gsb in QGIS 3.10?
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156 views

How to add projected point coordinates to attribute table?

I want to get the projected coordinates of each point into my attribute table? The software which I want to use can only compute Cartesian/projected files, and not data in lat long or any other kind ...
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1answer
35 views

Convert Omega/Phi/Kappa to Euler Angle

I've been given Omega/Phi/Kappa data from drone surveillance photos and I need to convert it to Euler angles (or a quaternion, I'm not fussy). I've been given the opk data in X right Y up format, ...
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1answer
50 views

Wrong coordinate system after import

I try to do something simple, use official data of Belgium zones that I found here: https://eservices.minfin.fgov.be/myminfin-web/pages/cadastral-plans. So I downloaded the files of one city and ...
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1answer
48 views

Using CRS EPSG:3857 but misalignment between Stamen background and coordinates of polygons in GeoPandas

Using GeoPandas and Contextily to create maps with a Stamen background map I notice a misalignment between the background map and the coordinates of polygons drawn on the map. The shapefile is from ...
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1answer
40 views

Layer disappears when changing from CRS in degrees to CRS in meters in QGIS

The problem I have tens of thousands of small polygons for which I want to create buffer/doughnuts for, but I don’t get the units right. I want meters and not degrees, and changing to (what I think ...
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1answer
52 views

QGIS 3 XYZ Tiles and Projections

I have found XYZ layers seem to ignore projections or can't seem to use them. I want to operate using a projection so I can buffer point data, for example. I was attempting to use ESRI:102171 because ...
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5answers
8k views

Better Distance Measurements in Web Mercator Projection

I am working with an ESRI stack, storing my layers in a sql-spatial-enabled-SDE- geodatabase (Geometry type, Web Mercator-3857). I am building a web mapping application, so by default, the tiles are ...
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58 views

ETRS vs ETRF and EPSG

EPSG 25832 = ETRS89/UTM zone 32N… Wouldn't it be more correct to call it ETRF89/UTM zone 32N and, if so, what's the equivalent EPSG code for ETRF2000/UTM zone 32N?
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1k views

Transforming Google Maps overlay to fit Ordnance Survey projection

I am currently in the process of creating a map with some administrative boundaries on it. The base map I am using is an ordnance survey map 1:10000. I downloaded an administrative border as a .kml ...
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63 views

What CRS for a large scale analysis

I was wondering what CRS to use when focusing on a large scale area for an analysis. For example the Mediterranean Sea. I need to find the distance of each sea port from another. That means I need ...
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1answer
498 views

Using Google Maps as base layer with overlays (vector & rasters) in OpenLayers

Currently i'm using OpenLayers 2.12 and geoserver 2.2.4. On initial load the application has the base layer(say baseLayer_1) of 4326 projection with overlay layers of One WMS layer(say worldWms) and ...
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17k views

Reprojecting base layers in OpenLayers

I have vector/topo/image tiled maps for some places in North America which were published as ArcGIS Server REST service. These maps (A) are based in EPSG:26912 projection. Now I want to use these as ...
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6k views

Using base layer of two different projections (Spherical Mercator and WGS84) in OpenLayers

How do I add baselayer with two different projections? I have added overlayer with a different projection(EPSG:4326), but I need to add base layer with various projection Google Maps My vector ...
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In a software application displaying latitude & longitude, should N/S/E/W be localised?

In English software, it's conventional to render WGS 84 co-ordinates in a manner similar to the following: 38.8951° N, 77.0364° W or, encoding the directionality into the numeric values: ...
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27 views

Coordinates transformation of four columns in qgis

I have four columns with grid coordinates X_min Y_min X_max Y_max. As these coordinates are in ESPG 3857, i want to convert each of the columns to 4326 in QGIS. Can anyone help?
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121 views

Reprojecting GeoTIFF from WGS84 to UTM with gdalwarp?

I have a GeoTIFF image in WGS84 and when I try with gdalwarp to reproject to UTM, it has a problem. Size of TIFF is J: 15769, W: 60027 J_LeftTop:2.0705046510 W_LeftTop:0.4974727391; J_RightTop:2....
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1answer
46 views

Path to add NTv2 transformation to QGIS

Every time I start a new QGIS project, I have to add the BETA2007.gsb NTv2 Transformation. I would like to modify my QGIS settings in a way, that the NTv2 is automatically added to the project. When ...
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44 views

What CRS should be standard for a group with many QGIS Projects? [closed]

A group of us are gathering geospatial data for analysis and later interactive web maps. I am hoping to standardize the CRS across QGIS projects. Data will be coming in from Google MyMaps as a .kmz or ...
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72 views

3D projected map: put locator from GPS coordinates

Hello I'm a newbie in maps and not so good (as I wish to be...) in math and geometrics stuffs. So: I have a 2d google map. I have to put a 2d projection of this map (not exactly this one but a ...
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1answer
43 views

System.ApplicationException: 'EPSG PCS/GCS code 4326 not found in EPSG support files. Is this a valid EPSG coordinate system?'

I have setup a consol app in C# that uses the GDAL.CORE NuGet, it seems to work fine when converting most of the .shp files I have, however with one .shp file I am getting the error below: System....
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3answers
1k views

Converting .kml to different projection in QGIS

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:...
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1answer
53 views

Save GeoJSON file in GCS

I'm trying to make sure that my geojson file saved from QGIS is saved in a GCS with lat lng points. When I open my file I get coordinates like this which seems like my file is saved in nad83 as ...
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1answer
33 views

Changing projection of Google Earth Engine code editor display

I would like to change the projection on the code editor display window from EPSG:3857 (maps Mercator) to something else like Lambert conformal conic. If this is not possible on code editor display ...
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31 views

Seeking global projection suitable for raster preserving equal area

I have a global tif file in epsg:4326 and a shapefile of points distributed around the global. I want to retrieve the sum of the value of pixels around 10km of each point. One obvious thing to do is ...
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3answers
288 views

Why does DotSpatial return NaN for point reprojection?

From the master branch and examples @ https://github.com/DotSpatial/DotSpatial the following fills the xy array with NaN but we expect 1755668,5922511 Dim x As Double() = {2666109} Dim y As Double() =...
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1answer
71 views

Over calculation of area- How do I calculate correct acreage when there are stacked parcels?

I am currently interning for a county in the United States. I am working on the data and mapping needed to fulfill the Open Space Activity of CRS. Stacked parcels are causing me a massive headache. ...
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30 views

Conversion of height systems

If I have a vector dataset with XYZ data and convert it with QGIS from EPSG:31468 to EPSG:4979, for example, and the heights (z) are based on EPSG:31468. Will these values also be converted to the ...
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1answer
48 views

How to transform camera calibration parameters to other coordinate system?

I have all camera calibration parameters (X0, Y0, focal length, R0, P0, P1, K0, K1, coarse rotation, rotation, translation) and position of the image in WGS84 (XYZ in meters) and other parameters like ...
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3answers
440 views

writeOGR() not writing out datum of shp

I am writing out a shp, in ESRI shapefile driver. In R, the projection of this shp is +proj=aea +lat_1=29.5 +lat_2=45.5 +lat_0=23 +lon_0=-96 +x_0=0 +y_0=0 +ellps=GRS80 +towgs84=0,0,0,0,0,0,0 +units=...
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2answers
1k views

Older British Geological Survey geology maps of Kenya; need complete projection information

I have several geologic maps of Kenya produced by the BGS circa 1993. Noted on each map is the following: Projection:-Transverse Mercator Spheriod:-Clarke 1880 (modified) That's great, but that ...
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46 views

Extract value of a latitude/longitude for a NETCDF4 file containing vertex_longitude and vertex_latitude values for OCO-2 product [closed]

I had downloaded a file from https://co2.jpl.nasa.gov/build/?dataset=OCO2L2Stdv8&product=FULL#download The data is freely available and you can download it without registering It is a Netcdf4 ...
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2answers
490 views

Projection (Datum?) slightly off for plotting Geopandas [closed]

I'm trying to plot some polygons I obtained from a 2002 Census in Chile. I'm loading them to geopandas, converting them to epsg='4326' and then sending them to Folium (which is a wrapper for Leaflet). ...
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1answer
44 views

Dynamic Text Datum properties in ArcMap

Is there a way to add the datum information to a layout using dynamic text in ArcMap. I am aware that the properties of the CRS can be added, including the datum name using but I am looking for the ...
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1answer
55 views

Altering layer's CRS to correct Layer Misalignment in QGIS

I've got a vector layer in my project which isn't aligned with the rest of the project (see attached JPEG). These are work files so I'm not sure when they were created or how they might have been ...
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1answer
41 views

Path to add often used CRS to “recently used crs”

When I start a completly new QGIS I need to manually add my often CRS to have them in the list of "recently used crs". I would like to add all of them in a folder somehow and than add the path to the ...
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1answer
41 views

Display longitude latitude points on xy raster file in meters and with projection of Albers Conical Equal Area

I'm new to Python and I have a data set which contains longitude and latitude coordinates(WGS84) points, and a .img raster file of CONUS in meters and with the projection of Albers Conical Equal Area. ...