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.
7,614
questions
-1
votes
0
answers
15
views
How Many Celestial Horizons around the world are there? [closed]
How Many Celestial Horizons around the world are there?
At Sea Level. The Starry Sky Horizon..
My Guess is 15. It takes about 90 mins for ISS to orbit the Earth, and it takes about 6 mins to pass, ...
0
votes
0
answers
12
views
Google Earth Engine is failing to parse this custom WKT
I'm getting the following error:
Error: Projection: The CRS of a map projection could not be parsed. (Error code: 3)
when trying to export google earth engine imagery to an albers equal area conic ...
- 671
1
vote
1
answer
24
views
Definition of "SR-ORG" CRS
I've seen notes that SR-ORG:#### means that the SRS/CRS/projection definition is user defined. Is there an official location saying that? Some of these feel official. What is the canonical location ...
- 185
1
vote
1
answer
41
views
EPSG:4326 vs EPSG:3857 - Why are they aligned?
Firstly I'd like to point out that I am a very basic user and trying to get my head around a few things.
I have a KML boundary saved from Google Earth. I can then drop this boundary in to QGIS which ...
- 11
1
vote
1
answer
22
views
Geocoordinates to pixel value in GDAL?
I'm trying to read a GeoTIFF with one band which stores a value between 0 and 3 ( 255 is no maks ). My Goal is to write a little program which takes in a latitude/longitude and returns the fitting ...
- 127
0
votes
0
answers
30
views
ReadRaster returns wrong pixel value
I'm trying to read a GeoTIFF with one band which stores a value between 0 and 3 ( 255 is no maks ). I downloaded it from here :
https://dataverse.harvard.edu/dataset.xhtml?persistentId=doi:10.7910/DVN/...
- 127
0
votes
1
answer
20
views
Extracting the pixel value of a geocoordinate from a GeoTIFF [closed]
I have a simple GeoTIFF file where I want to query the pixel value of a certain geocoordinate.
I have no experience in this topic and there nearly no tutorials or whatever about this topic.
All I know ...
- 127
0
votes
1
answer
21
views
Using EPSG 4326 in ArcMap
I have geocoded a series of addresses using ArcMap 10.5. The Geographic Coordinate System under the properties is:
Geographic Coordinate System: GCS_WGS_1984
Datum: D_WGS_1984
Prime Meridian: ...
- 103
0
votes
1
answer
20
views
Seeking API to upload GeoTIFF and query it for data [closed]
I have several GeoTIFFs which basically contain biome information. However, I have no experience in reading them by myself.
Is there any online API or website where I can upload them to query data ?
I ...
- 127
0
votes
0
answers
34
views
Vertical Datum transformation for raster using ArcGIS Pro
I have a DEM raster file on WGS84 CRS and height referenced to ellipsoid on same datum. I want to convert that DEM to local CRS (horizontal & vertical) including the vertical datum transformation. ...
- 1,027
0
votes
0
answers
18
views
QuickMapServices does not work in QGIS 3.24 Tisler as worked before?
I was working with the Google satellite basemap from QuickMapServices using the projected coordinate system NAD83(2011)/UTM zone 15N, and everything was working fine, but today after the upgrade of ...
- 91
1
vote
1
answer
26
views
Problems with uploading point coordinate British National Grid data into QGIS as .csv file
I'm very much hoping someone can help me with this, please. I have uploaded raster data from Digimap to use for maps for field sites for my research in the UK. The issue is that this map data use ...
- 11
0
votes
0
answers
42
views
Transform coordinates length to pixel length?
Is there a function to transform a coordinates length to a pixel length?
I need this function for cropping and scaling map images to be inserted as layers in an OpenLayers Map.
The map images are ...
- 81
1
vote
1
answer
25
views
How to convert crs_wkt starting with GEOGCRS to a ogc_wkt string (to use rioxarray.reproject_match)
I have two xarray data arrays (1. land_data, 2. climate_data) that I want to reproject and match (rio.reproject_match()):
climate_data_matched = climate_data.rio.reproject_match(land_data)
Land data ...
- 33
2
votes
0
answers
29
views
How do the two sets of parameters in the Coordinate Operation processing tool interact?
QGIS' modeler provides a "Coordinate Operation" processing tool as model input. One can use it to specify the exact coordinate operation a transformation/reprojection will use.
The ...
- 8,082
1
vote
1
answer
32
views
Is there projected version of EPSG:4269?
I know EPSG:4269 is a datum so this question might not make sense.
Is there a CRS which uses NAD83 and uses meters instead of degrees (something like EPSG:6933 but for NAD83)?
https://epsg.org/search/...
0
votes
0
answers
23
views
Gridshift in QGIS 3
I try to access to a specific gridshift for a projection but It doesn’t appear in the datum transformation window.
I’m working on QGIS 3.16.16. I want to use the NAD8398.gsb (from NTv2) in a ...
- 1
1
vote
1
answer
47
views
Reprojecting from EPSG:3857 to EPSG:28992
I'm attempting to reproject a coordinate in EPSG:3857 to EPSG:28992. The problem I'm running into is as follows:
When I use GeoPandas (ie. df.to_crs(epsg=28992)) to reproject my coordinates I get a ...
- 13
0
votes
1
answer
35
views
Converting points to latitude and longitude values in R
I have a .tiff file with some coordinate data associated with temperatures that I need to convert into latitude and longitude, using R. I used the following code to read the original file:
testlat<-...
0
votes
0
answers
25
views
Uploading tif to GEE Error: "Image extends outside -90,90 latitude range. Bounding box x=0..43200, y=0..16800"
I had a vrt layer of soils that I'd like to use in GEE. Since GEE only takes tif image files for upload to assets, I exported it as a tif with the projection EPSG:4326. However, when I try uploading ...
- 85
-1
votes
1
answer
38
views
What coordinate system is this with North and East?
What coordinate system is this? With label 'North' and 'East'.
All the data point lies in Southern Finland.
I tried UTM and http://projfinder.com/. Couldn't figure out...
- 1
0
votes
0
answers
37
views
QGIS 3.22 - WFS will not load gives CRS Bounding Box error
QGIS 3.22 does not appear to be compatible with my businesses WFS product but has been in the past.
When importing my WFS I receive two errors: "Used a ballpark transform from EPSG:4326 to EPSG:...
- 1
0
votes
0
answers
28
views
Python way of finding CRS of CSV file
I have a CSV like below:
X Y Z
626066.43 234058.2 6.69
626066.43 234059.2 6.89
626066.43 234060.2 7.06
626067.43 234057.2 6.69
626067.43 234058.2 6.89
...
- 41
0
votes
0
answers
20
views
Is there a way to get/use a specific Datum Transformation in Pyproj not suggested by TransformerGroup?
I need a pyproj transformer (or at least a wkt string for the operation) going from CRS EPSG:3035 to CRS EPSG:28992 specifically using the datum transformation operation EPSG:4830. Very similar to ...
0
votes
1
answer
30
views
Adding Le Pouce Grid coordinate system to ArcMap
I regularly deal with CAD files in this legacy coordinate system and I wanted to include it in ArcMap.
I have the following data from the Control Network booklet from the Ministry of Housing and Lands ...
3
votes
2
answers
116
views
Imported CSV data points showing in wrong location
I have vector points I have uploaded in a CSV file. The coordinates from the surveyor were in Map Grid of Australia (MGA2020).
The base map I use is Google Maps which I also change the CRS to MGA2020 ...
- 33
0
votes
1
answer
19
views
ArcPy GridIndexFeature doesn't calculate square Grids - But using the tool in ArcGIS Pro desktop it does
I am currently trying to create Grids for several counties in my country.
Therefore I wrote a Python script using ArcPy and the GridIndexFeatures tool.
I want a 1000x1000 Meters Grid. If I am using ...
- 41
1
vote
1
answer
38
views
CRS is empty but GeoDataFrame plotted correctly when reading shapefile with GeoPandas
I have a shapefile that I created in QGIS using the projection NAD_1983_2011_StatePlane_Virginia_North_FIPS_4501_Ft_US.
When I load the shapefile into Python as a GeoDataFrame, it appears that the gdf ...
- 215
3
votes
1
answer
70
views
Where are the predefined CRS stored in my QGIS installation?
I would like to do a text search through all those. I hope they are simply saved as files somewhere, but I have not been able to find them.
I am on Ubuntu Linux, with QGIS 3.10 installed via apt. But ...
- 515
1
vote
1
answer
22
views
Convert rworldMap to UTM
I would like to use the worldMap from rworldMap, but need this in UTM projection rather than long/lat. I first clip the map to my area of interest. How do I then convert this to UTM projection? My ...
- 11
0
votes
0
answers
10
views
GDAL_translate and HEGtool
I am using GDAL to convert a huge dataset of HDF into GEOTIFF. When I tried with the HEG tool the tiff file was according to my requirements, but when using GDAL I think the projection gets shifted ...
0
votes
0
answers
54
views
OpenLayers vector accuracy in EPSG:3857 projection
I'm working on a web mapping solution that stores data in PostGIS with EPSG:4326 projection. Everything seems to be good until last week. My customer loaded two shapefiles that some parts are ...
- 101
0
votes
0
answers
24
views
Define Projection/setting coordinate system is not saved in ArcMap
I've downloaded a GMT grid from http://www.soest.hawaii.edu/pibhmc/cms/data-by-location/northwest-hawaiian-islands/submerged-banks/gardner-pinnacles/gardner-pinnacles-bathymetry/ which doesn't include ...
- 131
1
vote
1
answer
43
views
How do I change my view to nadir in QGIS?
I need to be able to align utility drawings and maps with the street map/satellite images for our maintenance department's records of electrical conduits, piping and other underground utilities that ...
- 33
2
votes
0
answers
32
views
How is a EPSG:4326/WGS84 data displayed on screen if it is not projected? [duplicate]
If I understand correctly, data on a geographic reference system, such as EPSG:4326, is in a representation on the globe and it has to be projected to be represented in a plane.
So how can tools such ...
- 129
0
votes
1
answer
38
views
GeoPandas input file to shapefile with coordinate system information
I have written some Python code to convert different input files to a shapefile using geopandas.
import pandas as pd
import os
import geopandas as gpd
from shapely.geometry import Point #convert to 3D ...
- 131
0
votes
0
answers
18
views
PLSS not aligning with city boundaries
I have PLSS data that is supposed to line up with a city's easterly boundary line yet it does not.
There is about a 70 foot gap between the SWSE western quarter section line of the SE quarter of ...
- 51
0
votes
1
answer
21
views
projectRaster on a list of rasters
I have two raster layers in a list format called myrasterlist that differ in extent and crs. The list looks like this:
[[1]]
class : RasterLayer
dimensions : 540, 537, 289980 (nrow, ncol, ncell)...
- 163
0
votes
2
answers
31
views
Convert coordinates in ArcGIS
I am trying to convert the coordinates given below. These coordinates have been provided to me with the given information: 'All co-ordinates are in Metres, Based upon International Spheroid, European ...
- 767
2
votes
1
answer
68
views
Can I work with two polygons that were created in a different CRS?
I have created two square polygons each having an area of roughly 5.000ha. One of the polygons is located in Australia and the other one in Iceland, because I am working with relatively large areas ...
- 311
0
votes
1
answer
30
views
QGIS rotate CRS around a new centre
I've been given some NetCDF data in a Mercator projection with a centre longitude of 173.9581, centre latitude of -41.0870 and rotation of 40 degrees. I have tried to create a new CRS based on ...
- 231
1
vote
0
answers
19
views
Transformation from ETRS89/EPSG:3416 to ETRS89/EPSG:3035
I have already worked with the first KBS, but now I need to convert my whole system to EPSG:3035. I imported this system to my QGIS, and tried to convert everything, but now my lines/polygons are far ...
- 11
1
vote
1
answer
79
views
Google Maps not being quite top-down in QGIS
I am quite new to QGIS, but am using it for utility mapping at work.
I have added a google maps layer to my QGIS project via http://mt0.google.com/vt/lyrs=s&hl=en&x={x}&y={y}&z={z} and ...
- 33
1
vote
0
answers
27
views
Visualize transformation when reprojecting from Mercator to equirectangular
I am trying to visualize the map distortion that occurs when reprojecting from Mercator to equirectangular coordinate systems. The actual reprojection is not difficult, but I want to save images (...
- 11
2
votes
1
answer
37
views
Orthographic projection for South America in ArcMap
I would like to plot a map using an orthographic projection for South America in ArcMap. The goal is for the final map to look like this: https://commons.wikimedia.org/wiki/File:South_America_(...
- 203
0
votes
1
answer
43
views
GDAL coordinate transformation using C/C++ API (OGRCoordinateTransformation)
I'm in a puzzle of figuring out how to create correct coordinate transformations using GDAL C/C++ API.
I have referenced code from tutorial - https://gdal.org/tutorials/osr_api_tut.html#coordinate-...
- 103
0
votes
0
answers
27
views
Obtain CRS compliant WKT from GeoPackage with ogrinfo
I would like to obtain the WKT for a few geometries stored in a GeoPackage file with orginfo. That is the function of the -al parameter. However, when applied directly to the file in question it ...
- 3,664
1
vote
0
answers
34
views
Vertical datum transformation in ArcGIS Pro
I'd like to compare USGS 3DEP DEM with SRTM DEM for western U.S.. I did some research here, and find out that I need to match their datum (from NAD83-NAVD 88 to WGS84-EGM 96) before comparing the ...
- 11
-2
votes
2
answers
72
views
UserWarning: Geometry is in a geographic CRS. Results from 'buffer' are likely incorrect
I am create geopandas DataFrames and create a buffer to be able to do spatial joins. I set the crs for the DataFrame and then proceed to create buffers and encounter the warning then.
df1 = gpd....
- 323
2
votes
1
answer
46
views
Should I use different projections to calculate distance and displaying on the Map?
I'm using the UK crime dataset provided by https://data.police.uk/
My question is about coordinate systems/map projections. The crime locations are stored with the projection EPSG 4326 which uses ...
- 21