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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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projectRaster() very slow

I am a R learner and I am trying to do some linear regression using RStudio. I have a few rasters but they have different CRS so I need to reproject them. Here is one example. The raster I used is ...
jyy0610's user avatar
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1 answer
22 views

QGIS custom CRS changes negative eastings to positive westings

I have a situation where I would like to make a custom CRS in QGIS that changes negative eastings to positive westings. Does anyone know how to do this?
Taona Shumba's user avatar
1 vote
1 answer
74 views

Reprojecting vector layer does not reproject in QGIS 3.36.0

Using QGIS 3.36.0 Maidenhead on Win10, I have a strange behaviour: Reprojecting vector layers (with Reproject layer) does reproject, but invariably to EPSG:4326, and with the wrong CRS definition ...
Babel's user avatar
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QGIS UK 1940s military Cassini grid projection

Does anyone have a quick and easy way of converting UK Cassini military grid coordinates in QGIS? I'm currently transcribing military grid references from War Dairies for units in the UK. I have to ...
Klonko's user avatar
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3 votes
1 answer
127 views

How to make annotations follow the latitude lines in QGIS?

If my map is in EPSG:4326, the text annotation is normal. However, if the projection is transformed, such as EPSG:102017, the text label does not change. I want the text label information to be ...
smilecc's user avatar
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2 votes
2 answers
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Obtaining list of all EPSG code for a single location on map

There are APIs like https://epsg.org/info-api.html, maptiler which takes text input like "San francisco" and returns EPSG codes, but the problem, is I am not able to find a library or a tool ...
uk2797's user avatar
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26 views

QGIS export as GeoPackage not maintaining the input CRS

I have a template QGIS project in which I run certain basic analyses, buffers and clippings (EPSG 3857 to allow for meter and kilometer buffer distances). These buffers and clips are then exported ...
user245398's user avatar
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46 views

Fix for incorrect pixel size post transformation

I have a .tif in WGS 84 and one in EPSG 32632. EPSG has a resolution of 10m (so the pixel sizes are 10). When I convert WGS 84 into the EPSG 32632 CRS, even after specifying that the new resolution ...
tds's user avatar
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2 votes
1 answer
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Projection with transformation returns unexpected results using GeoPandas compared to ArcPy

I am using GeoPandas to project a geodataframe of polylines representing water crossing locations across the USA from ESRI:102039 (NAD 1983 USGS Contiguous USA Albers) to ESPG:3857 (WGS 84 / Pseudo-...
mafbarth's user avatar
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Mid latitude of the railway line from Start and End Point of the district boundary [closed]

I have the district shapefile and railway line. After joining the attributes by location, I found in which district which railways line lies in. Now I want to know the start, mid and end point of ...
Wajida's user avatar
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Getting the right projection and resolution when importing from ArcGIS REST on QGIS

I imported this layer on QGIS from ArcGIS REST Services, but it has no defined CRS. In my previous question I was suggested to provide the correct dimensions in order to export this raster with ...
Ana Clara's user avatar
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How do I show the right grid projection on my EPSG:4289 map/print layout?

I am trying to show the coordinates of my map (print layout) via a grid. However, I can not get it to work. I have tried multiple things: changing CRS, changing interval units, trial and error with X/...
Sem20112001's user avatar
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13 views

Suitable basemap for sharing Europe Lambert Conformal Conic projection layers to web map

I am trying to share layers with a projection system in Europe Lambert Conformal Conic as a web layer. However, my basemap (World Imagery) is projected in WGS 1984 Web Mercator (Auxiliary Sphere) and ...
Chananja's user avatar
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1 answer
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Leaflet map in projected coordinate system

Is there a way to show the leaflet map in a custom projected coordinated system, such as the North America Albers Equal Area Conic_1? We can do this in D3.js, but can we do it in Leaflet.js? Something ...
Abdullah's user avatar
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QGIS: Changing map projection using satellite image

I have been working on a project for several weeks now, which shows the surface currents using OSCAR. I am using the following data set from NASA:https://search.earthdata.nasa.gov/search/granules?p=...
Toth's user avatar
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PostGIS: Custom projection matrix from known points

I have a PNG image of a map (mercator) and known points in a table like this: coord_map - geometry(Point, 0) coord_real - geometry(Point, 4326) 010100000000000000000000000000000000000000 (0,0) ...
JaFu0815's user avatar
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Bounding box intersection when crossing date-line and meridian

First of all, I check for general intersections: public bool CheckOverlap(BoundingBox boundingBox) { if (this.UpperRight.Longitude < boundingBox.LowerLeft.Longitude) return ...
Martin Yakoslaw's user avatar
3 votes
0 answers
38 views

Adding custom CRSs and coordinate transformations QGIS (modifying the CRS/CT catalog)

I am trying to add custom CRS and transformation definitions to the CRS/CT catalog in QGIS. As far as I know, the qgis.db is meant to handle custom definitions. However, it does not contain a table ...
phaarnes's user avatar
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15 views

gdal ogr transform c++ swaps axis order x to y [duplicate]

This is example #include "gdal/gdal.h" #include "gdal/ogr_spatialref.h" #include <iostream> void TransformBounds(double xmin, double ymin, double xmax, double ymax, ...
Vignesh M's user avatar
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0 answers
24 views

Scale bar in Azimuthal but not Robinson despite reprojected layer and matching project CRS - why?

I need a world map in World Robinson (ESRI:54030) projection (or Winkel Tripel, ESRI:54042), but the scale bar won't appear unless it's set to "Map Units". Since I need KM, this won't work. ...
J_C's user avatar
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ArcGIS Pro - empty container when adding DWG or DXF file

I am struggling with adding the DWG file to my ArcGIS Pro project. By following this video: https://www.youtube.com/watch?v=I8sbUMDbYVI https://www.youtube.com/watch?v=dZE9USM6FH8 I am struggling with ...
Geographos's user avatar
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Transform of Cassini coordinates to Arc1960 UTM zone 36N results in unexpected negative values [closed]

I have tried to transform using QGIS but I was getting unexpected results that is to say negative eastings and yet I expect all positive values.
user243678's user avatar
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21 views

Issues with projecting HYDRO 1k raster [duplicate]

I want to use compound topographic index (CTI) from HYDRO 1K, I downloaded it from USGS https://www.usgs.gov/centers/eros#/Find_Data/Products_and_Data_Available/gtopo30/hydro. I use ArcGIS Pro and I ...
Omab's user avatar
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0 answers
15 views

Selecting correct extent for cartopy image

I have an image with a defined size (say, 50km x 40km) and I want to be able to place it centered at any (lon, lat) point in my map. The extent in PlateCarre units will thus be very different if is ...
Pato's user avatar
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0 votes
1 answer
34 views

Changing project CRS using PyQGIS not working

I have a fairly long PyQGIS script running in the Python Console Editor in QGIS. The script creates 5 layers: 3 layers derived from DEM data, generally in CRS EPSG:28356 (GDA94 / MGA Zone 56), and 2 ...
Tom Brennan's user avatar
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34 views

Mercator CRS that covers the extent -90,-180 to 90,180

Is there a EPSG CRS for Mercator that isn't deprecated and covers -90.0,-180.0 to 90.0,180.0?
Paul Malm's user avatar
2 votes
1 answer
45 views

QGIS: Display in ECEF Coordinate Systems issues

When the QGIS project coordinate system is set to EPSG:4978 [1] and the OSM WMTS with EPSG:3857 is loaded, the WMTS is not rendered on the canvas. However, when the project coordinate system is set to ...
Giser's user avatar
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1 answer
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How does reprojecting a .tif file work after resampling the resolution of the pixels?

Background: I have two .tif files band_06 (20m resolution, i.e pixel size 20,20) lulc ("10"m resolution, pixel size 9.994 9.992) and a .shp file square All files have the same CRS (EPSG:...
tds's user avatar
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27 views

Can not change map unit while trying to use unknown spatial reference

I am using ArcGIS Pro 3.0.2. Whenever I add a new map to my project, the spatial reference of the map is set to Web Mercator by default [which should be none]. I want to set the map coordinate system ...
nayan's user avatar
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0 answers
34 views

geo coordinates to relative position on downloaded satellite image

I have a bounding box coordinates that I use to download the satellite image from Bing. I have polygon coordinates inside the previous bounding box. Is it possible to get the corresponding polygon ...
Ernest Dujo's user avatar
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0 answers
32 views

ArcGIS Pro shifting data

I have used ArcMap forever, making the switch to ArcGIS Pro but when using ArcGIS Pro, I have my data in WGS84 for continuity in the data across Canada but I make my maps in the UTM zone I am in for ...
D Spencer's user avatar
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23 views

Autolisp & JavaScript convert Lat/Long to X(Easting) Y(Northing)

I'm wanting to create a BricsCAD script which takes Lat/Long WGS84 and converts it into the BNG Easting/Northing Similar to Grid Reference Finder, Webapps BGS Converter & Google Earth's long/lat ...
Josh's user avatar
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0 votes
0 answers
9 views

Auto populating X and Y in Esri Enterprise

I have created a point layer in ArcGIS Enterprise with the intention of collecting Latitude and Longitude data of points to be collected. Is there a way to set the layer so that it populates the X and ...
Isaac Bowling's user avatar
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0 answers
26 views

Making transformations between ellipsoids using PyPROJ

I am transforming coordinates between the Ellipsoids WGS84 and Hayford International using the code from pyproj import CRS, Transformer Define CRS objects for WGS84 and Hayford International ...
nic's user avatar
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0 answers
36 views

Calculating coordinates grid intervals - minutes and seconds in QGIS

I would like to define the coordinates for the grid to 15' intervals. This means ideally 15°15', 15°30' Here are the coordinates for the grid/area of interest: 15°48'0"E 16°0'0"E 16°12'0&...
Amelia Nicodemus's user avatar
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0 answers
28 views

Transform S-JTK coordinates to WGS84 ProjNet

double x = 1114492.28; double y = 544711.47; double[] xy = { x, y }; var cf = new CoordinateSystemFactory(); var f = new CoordinateTransformationFactory(); string wkt25831 = "PROJCS[\"S-...
Ondřej's user avatar
1 vote
1 answer
24 views

gdal2tiles SRS problem, works in GDAL 2 not GDAL 3

gdalsrsinfo -V 'PROJCS["Mars_2015_Ocentric_Equirectangular_clon_0",GEOGCS["GCS_Mars_2015_Ocentric",DATUM["D_Mars_2015",SPHEROID["Mars_2015",3396190,169....
guymac's user avatar
  • 121
0 votes
1 answer
42 views

Replicating Measure Line Tool Output programatically for rotated/oriented rectangles

What I have I have some oriented rectangles/polygons that represent boats in a geoJSON file. The coordinates of the points are in EPSG:4326. Example here: { "type": "FeatureCollection&...
SFSDev's user avatar
  • 33
1 vote
1 answer
49 views

Create squares buffers around globally distributed points in geographic CRS

I have a set of point features distributed globally, in geographic CRS (WGS 84). I would like to plot approximate 10*10 kilometers polygons around those, that could also be rotated. I have come out ...
M2FKXY's user avatar
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1 vote
1 answer
32 views

Converting Custom CRS from ArcGIS to QGIS

I have received a Custom CRS that was developed for use in ArcGIS and am trying to adapt it to work in QGIS. In the past, I've been able to use the same CRS with both software without issue but my ...
McCulloch's user avatar
0 votes
1 answer
61 views

Extracting Coordinates of a 1x1 GRID in a gpkg file using QGIS

I have a gpkg file where I have the coordinates of the 1x1 km grid. See the below sample picture. I am trying to extract the coordinates (latitude & longitude) of all the 1x1 grid cells from my ...
LearningLogic's user avatar
5 votes
1 answer
152 views

Accessing layer properties for expression syntax in QGIS Modeler

Overview: In QGIS I want to create a conditional branch in the model designer so that I can pass images with 20m resolution through the 'Warp (reproject)' tool. Images that are already at 10m ...
tds's user avatar
  • 91
1 vote
1 answer
84 views

Read WMTS source with Maproxy

I am trying to consume city of Paris WMTS source with EPSG:2154 and convert that to iD compatible (OpenStreetMap compatible) tile server (WMS or TMS). The map is visible here et here is an example of ...
divulgacheur's user avatar
-1 votes
1 answer
36 views

Converting XY coordinates into local coordinate system using Arcade

I am currently trying to convert coordinates into a local county coordinate system. The use case is when I have my field workers out collecting, it could auto calculate a field for the geometry.x and ...
camtmiller's user avatar
0 votes
0 answers
31 views

Small Offset in QGIS Reprojection from WGS84 to ED50

I have a .shp in QGIS in EPSG:32637 (WGS84/UTM Zone 37N) and I want to reproject it to ED50, which is in this case EPSG:23037. When I do it manually in in QGIS, the reprojection works fine and both ...
hector's user avatar
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1 vote
0 answers
33 views

Can't Import NAD83 / NRCan LCC Canada (EPSG:42304) in QGIS

I need to define the NAD83 / NRCan LCC Canada (EPSG:42304) CRS in QGIS to use the NBAC wildfire data from https://cwfis.cfs.nrcan.gc.ca/datamart/metadata/nbac. Since QGIS does not recognize this CRS I ...
JForsythe's user avatar
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0 answers
36 views

PROJ: cea: Invalid latitude (GDAL error 1)

I've been working on projecting raster files to a new coordinate reference system (CRS) for various datasets. However, I just encountered some warning messages that I haven't seen before. While the ...
Emma's user avatar
  • 25
3 votes
1 answer
121 views

How to make an infinite repeating projection in QGIS

I'm using the EPSG:3857 projection in QGIS. And I use a raster relief layer and several vector layers. Is it possible to make the map not interrupt at 180 degrees, but continue?
Vsevolod Tsukanov's user avatar
0 votes
0 answers
29 views

Matching satellite, DEM and OSM images

I have a set of satellite GeoTIFF images (from https://xview2.org/) that I want to pair with DEM images from OpenTopography (https://portal.opentopography.org/raster?opentopoID=OTNED.012021.4269.3) ...
Kalia's user avatar
  • 1
1 vote
0 answers
30 views

How to convert Cartesian coordinates with relative positions only to geo coordinates

My question: How can I convert Cartesian coordinates of some points to geo coordinates, knowing the latitude and longitude of only one of the points? What I want to do, for example: Converting the ...
oat's user avatar
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