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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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2 votes
1 answer
439 views

Counting points in MultiPolygon using PostGIS

I have a set of lottery retail locations, latitude and longitude, that I transformed to points and added the geometry column like this: ALTER TABLE lottery.retailers ADD COLUMN geom geometry(Point, ...
0 votes
1 answer
362 views

Resampling using pyresample grid definition

I would like to resample a dataset to another projection and scale. Following the documentation in pyresample website here. We need to have an Area Definition, which is tedious to do. import numpy as ...
0 votes
1 answer
384 views

Creating polygons with Geodesic measurements?

I'm using ArcGIS Pro 2.9 to translate plats into GIS. I've begun to notice some measuring inconsistencies. Having projected in WGS 1984 World Mercator, I would expect when I create polygons they would ...
0 votes
2 answers
227 views

How to reproject raster created from NetCDF file?

I have a NetCDF file that I turn into a RasterBrick and would like to reproject. However, this results in an error. How can I solve this? > dat class : RasterBrick dimensions : 1100, 1200, ...
5 votes
10 answers
8k views

Converting NZTM (New Zealand Transverse Mercator) to Lat/Long

This link is pretty close to what I am aftering (Converting NZMG (or NZTM) to latitude / longitude for use with R map library). Basically I am looking for a formula that can convert NZTM coordinates ...
0 votes
1 answer
5k views

Extract coordinate data from KML path

I have a route defined by a series of waypoints - how can i extract as many coordinates as possible from that route as possible? I need to extract about 100-150 coordinates that lie along a route ...
0 votes
0 answers
31 views

How to deal with HYDRO 1K data [closed]

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 ...
1 vote
1 answer
802 views

Euclidean Coordinates to Lat Long Based on Reference Location in Python

Goal Convert Euclidean Coordinates to Latitude and Longitude given the Latitude and Longitude of euclidean origin using Python. To give a sense of scale and accuracy for my application, the ...
0 votes
1 answer
19 views

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:...
0 votes
0 answers
24 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 ...
9 votes
2 answers
17k views

Adding CRS to shapefile in GeoPandas

I am trying to add CRS to a shapefile that I am exporting: shp1 = gpd.read_file(i[1], encoding='iso8859_7', crs_wkt='2100') shp1.to_file(out, encoding='iso8859_7', crs_wkt='2100') When I import it to ...
7 votes
6 answers
45k views

Calculating grid convergence (True North to Grid North)

I would like to know how to calculate the grid convergence angle between True North and Grid North for UTM maps. I am using ArcGIS 10.0 (ArcView licence). and have used the Calculate Grid Convergence ...
0 votes
2 answers
156 views

Reprojecting from BNG to WGS84 using python gdal.Warp causes a shift in the Channel Islands (Guernsey and Jersey)

I use the following python code to reproject from British National Grid to WGS84 a raster dataset that covers Great Britain, Isle of Man, Guernsey and Jersey: output = path output tif file input = ...
0 votes
0 answers
27 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 ...
0 votes
0 answers
27 views

Accurately transforming coordinates from WGS84 to EGS87 [closed]

I'm currently working on creating a python tool for transforming coordinates from WGS84 to EGS87. I've come across various methods, and a simple translation between the two systems is often mentioned ...
0 votes
0 answers
138 views

EPSG:27700 missing from available CRS in GeoServer [closed]

What would cause EPSG:27700 to not be available as a CRS in an out-of-the-box installation of GeoServer? I've been using GeoServer on Windows for years with no issues, but as an experiment our IT ...
0 votes
0 answers
28 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 ...
0 votes
0 answers
22 views

How to determine WKT string in Custom Coordinate system [closed]

I am trying to get my custom coordinate system into QGIS. The problem I am having is that when I go to upload it, I get prompted to define a WKT string. I have no idea where to start or how to find ...
0 votes
0 answers
14 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 ...
2 votes
1 answer
200 views

Decode SQL Server encoded locations with PostgreSQL

I imported the Adventureworks database to PostgreSQL and I can't find a description how to decode the spatial location data - 2 example entries look like this: ...
0 votes
0 answers
30 views

Go from geo coordinates to relative position on downloaded satellite image [closed]

Here is the probem: 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 ...
1 vote
1 answer
524 views

Project React-Leaflet map in different projection

I am working on a college project that deals with MAPS. Our project is related to mapping the location of stadiums for the recent FIFA worldcup. The tileserver url provided to us is custom. When I use ...
0 votes
0 answers
8 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 ...
0 votes
2 answers
558 views

OpenLayers SRS in request

I have a layer in GeoServer and its projection is EPSG:27700. When I query the layer in my app I get and error. Explanation: The GeoServer preview displays it correctly. So I copy the JavaScript ...
0 votes
0 answers
21 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 ...
0 votes
0 answers
32 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&...
0 votes
0 answers
22 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-...
0 votes
1 answer
775 views

Extracting a Particular Masked NetCD4 Datapoint in Python

Suppose in Python, I have read in a netCDF4 file, as follows: import netCDF4 ds = netCDF4.Dataset('fire_weather_index_2018.nc') The aspects of the netCDF4 is as follows: <class 'netCDF4._netCDF4....
0 votes
2 answers
198 views

Unable to publish maps via GeoServer because of wrong projection system

2022 layer upload shows this error any ideas? Caused by: org.opengis.referencing.NoSuchAuthorityCodeException: No code "EPSG:900914" from authority "European Petroleum Survey Group&...
0 votes
1 answer
113 views

GeoServer WFS 2.0.0 Default CRS

I'm trying to retrieve DefaultCRS for one layers from WFS 2.0.0. For the moment, only way I find is to use GetCapabilities and reduce the xml file by setting the sections like that : https://wxs.ign....
6 votes
2 answers
4k views

What does coordinate system WG 21° mean?

I have a land survey document for a piece of land, it contains absolute coordinates that I would like to locate on google maps, but I don't know how to correctly interpret the data. What does the "...
0 votes
1 answer
40 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&...
1 vote
1 answer
20 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....
0 votes
1 answer
200 views

Develop ECEF rotational matrix from NED aircraft yaw, pitch, roll

My goal is given an aircraft's latitude, longitude, altitude, yaw, pitch, and roll all in a NED coordinate system, produce a EFEC X,Y,Z location of the aircraft along with a 3x3 rotational matrix ...
58 votes
8 answers
167k views

Getting list of coordinates for points in layer using QGIS?

I've got a layer in QGIS that is comprised of points. Its attribute table doesn't have (show) the corresponding x and y coordinates for each point. Is there a way for me to extract a list of ...
1 vote
1 answer
692 views

Coordinate System is `' (empty) in GeoTIFF when checking with GDAL

Following is the output for my gdalinfo mygeo.tif. Driver: GTiff/GeoTIFF Files: 3489_DUBLIN_AREA_2KM2_rgb_124639_id32c1_20150326115630.tif Size is 9000, 6732 Coordinate System is `' Metadata: ...
1 vote
2 answers
1k views

Setting the spatial reference with Create Feature Class using ArcPy

I have the following code that works fine. However when I open in ArcGIS Pro 3.0 the polylines do not show up until I set the map properties to match the shapefile. spatialRef = arcpy.SpatialReference(...
-1 votes
1 answer
160 views

Which coordinate system is used in "gstat" package in R

I am confused about which coordinate system is used in gstat package in R-language and also in geoR package in R-language.
1 vote
2 answers
530 views

Train Images Classifier - OTB Spatial reference of input and samples don't match

I am running the Train Images Classifier on OTB 7.1.0. I used QGIS to upload a raster images and then created a vector polygon file for my classes. I ensured that both the raster and vector files are ...
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 ...
1 vote
1 answer
26 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 ...
2 votes
3 answers
7k views

Transforming coordinates from one CRS to another with rasterio

I'm trying to merge some rasters with rasterio.merge.merge. They are in the same CRS, EPSG:3857. I want the merged raster to cover the whole earth. Exactly the range (in coordinates): xmin, ymin, xmax,...
0 votes
1 answer
67 views

QGIS Clip raster bands SCP QGSPointXY(): overload error

What is the cause of this error and how do I remove it? I was trying to execute clip raster bands using coordinates. An error has occurred while executing Python code: TypeError: QgsPointXY(): ...
0 votes
1 answer
43 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 ...
5 votes
1 answer
145 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 ...
1 vote
1 answer
69 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 ...
0 votes
2 answers
458 views

Transforming geometry from EPSG:4326 (source CRS) to EPSG:3857 (target CRS - Leaflet's OSM default CRS)

My problem is I tried transforming from EPSG:4326 to WGS84, and it worked (just swap the axis order), and I also tried transforming from EPSG:4326 to EPSG:3875, and it worked too (the coordinates ...
0 votes
1 answer
2k views

ArcGIS Pro raster layer showing up in wrong place

I am very new to GIS and have only just started learning ArcGIS Pro. I have some satellite images that I have processed using a program called ACOLITE which outputs a NetCDF file. I am trying to use ...
0 votes
1 answer
462 views

Difference in calculating areas between Apache Sedona and GeoPandas

I am currently working on a project that involves calculating the area of a circumference with a radius of 0.001 degrees -created via buffer-, centered at latitude -4 and longitude -63. The resulting ...
-1 votes
1 answer
36 views

Importing custom coordinates relative to two points

I am measuring location of objects on a property, and I have a file with their coordinates (x,y) relative to two points of origin, which are two corners of the house. Is it possible to create a custom ...

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