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.
5,995
questions
1
vote
0answers
13 views
Manipulating Transformation parameters with PyQGIS
Is it possible to add a layer with a local coordinate system, transformed on the fly by a custom transformation entry from this local CRS -towgs84 and furthermore to manipulate the -towgs84 Parameters?...
-1
votes
0answers
23 views
Mathematic Formula to convert GGM-32N to WGS-84
I am looking for a formula to convert GGM-32N to WGS-84.
I have a large list of coordinates in Excel which I would like to convert to this other format - therefore I would really like to know where to ...
-2
votes
0answers
20 views
ERROR 000210: Cannot create output from gdb [duplicate]
I am trying to project features from a geodatabase and write into an enterprise geodatabase connection. I have permissions to create data and the name I am using also works. but I keep getting this ...
1
vote
1answer
44 views
What Projected or Geographic Coordinate System should I use to calculate km distances between various points on a large scale map?
I want to measure distances using the distance matrix tool on QGIS between the yellow dots and their closest blue dot. I want my output to be in KM and to be as accurate as possible. I don't want to ...
0
votes
1answer
45 views
Projecting features to Enterprise Geodatabase in Oracle gives ERROR 000210: Cannot create output
I am trying to project features from a geodatabase and write into an enterprise geodatabase connection. I have permissions to create data and the name I am using also works, but I keep getting error:
...
0
votes
0answers
33 views
After shapefile to GeoJSON conversion coordinates look wrong?
I have downloaded a shapefile of Iceland. Here is the source: http://www.arcgis.com/home/item.html?id=7a21f6f05b8d45848ed16298cbf96d59.
I then converted the shapefile to geojson, using this tool: ...
0
votes
0answers
34 views
Moving geometry at same distance in different coordinate systems
I haven't been making tools in ArcPy for a while and stuck in one case.
My goal is to create a serie of geometries in a center of current extent by running a script. I.e when I move ArcMap's extent ...
0
votes
1answer
38 views
Create prj4 file for NAD27 Mexico from prj file for import to QGIS
I would like to be able to add the NAD27 MEXICO projection to QGIS, MapInfo, etc. Global Mapper has this projection, and the prj file is:
PROJCS["NAD_1927_UTM_Zone_13N",GEOGCS["...
0
votes
0answers
17 views
ETRS89 proyections in R and ArcGIS
I have a shape file in ETRS89 CRS created with ArcGIS 10.6, prj file says:
GEOGCS["GCS_ETRS_1989",DATUM["D_ETRS_1989",SPHEROID["GRS_1980",6378137.0,298.257222101]],PRIMEM["Greenwich",0.0],UNIT["...
2
votes
1answer
26 views
How to fit xyz file into map?
I am new to GIS and I want to fit a DEM given as an xyz file into an existing map.
My problem is that when I open the xyz in qgis the tile is not at the correct position.
Changing the CRS to the ...
2
votes
1answer
28 views
Set image SRC using GDAL [closed]
I have a TIFF image with no coordinate reference system and I need that image to be in EPSG 32631. Is there a way to do this using GDAL?
Note: I am very new to Python
1
vote
0answers
14 views
Obtaining same resolution of pre and post UAV-Imagery In COSI-Corr?
I am currently trying to perform a correlation between a pre UAV derived image of a landslide with a post image to analyse displacement and direction.
The images were processed through SfM ...
1
vote
1answer
32 views
Why the projection system and units are showing differ in ArcGIS and Autodesk AutoCAD Civil3D?
I have converted a bunch of shapefiles to .dwg through Model Builder in ArcGIS. The units and projection system is showing correctly in ArcGIS properties but in Autodesk Civil3D units are showing in ...
1
vote
2answers
46 views
What kind of coord-sys is this? - 955999.8911220022, 26397850.011872
How can I identify this coordinate system? When I load the .shp with QGIS I get the correct linear mapping. However when I try to convert to GeoJSON and plot with something like Leaflet.js I get ...
1
vote
0answers
42 views
OSM Map quality deteriorates when changing CRS - QGIS
I have a problem with basemaps for my drawings in QGIS.
By basemaps I mean OpenStreetView, Google Maps etc. I'm aware that most of them (if not all) are natively set in EPSG:3857, and they look just ...
1
vote
1answer
35 views
Clipping a raster dataset with different projections
I have downloaded the Corine Land Cover map 2018 (raster 100m) from Copernicus Services, which covers the European Continent.
As I only need to work within a certain area, I need to clip the original ...
0
votes
2answers
18 views
NodeJs library to convert ESRI point(x, y, wkid) to lat/lng
I use ArcGIS and get an array of ESRI points which I need to convert to lat/lng.
I don't want to use the ArcGIS API, because it requires too many calls. Is there any library that can do the work for ...
0
votes
0answers
23 views
Gaussian Lat-Lon Grid to WGS84
I have some grib files from ECMWF ERA-Interim Reanalysis in which all the data are projected onto the N128 Gaussian grid (256 points of latitude x 512 points of longitude, https://www.ecmwf.int/en/...
0
votes
0answers
16 views
Convert heights from DHDN Gauß Krüger Zone 4 to UTM 32 ETRS 89 in pyproj
I am using pyproj.
X/Y conversion is pretty straightforward through
transformer = Transformer.from_crs(31468, 25832,always_xy=True)
However, this does not transform the heights.
From
Vertical ...
2
votes
0answers
13 views
How to slice a reduced gaussian gridded grib with xarray?
I want:
to get list of coordinates of points within the specified area (ideal would be geopandas from shapefile or something like this)
I don't want to interpolate the grib, just extract points by ...
2
votes
1answer
59 views
WGS84 expressed in meters - default projection in ArcMap
I am trying to identify the correct coordinate system for some data, with x and y expressed as (for example, data located roughly in the UAE):
6,220,199; 2,742,099
I haven't come across these 7-...
1
vote
0answers
23 views
Finding distances associated with change in latitude and longitude at given location [duplicate]
I am writing a program that uses GPS lat and long coordinates and a time change to determine speed with the output in units of m/s (precise to 0.1 m if feasible, but 1 m is sufficient). When ...
1
vote
1answer
36 views
GeoServer PostGIS layer with mixed SRS possible?
I'd like to setup a layer in GeoServer based on a table in PostGIS DB. The geometry column in the table has no SRID set (Find_SRID for this table returns 0).
Geometries inserted into the table don't ...
0
votes
0answers
62 views
Polygon poıints to simple GPS [closed]
I have nothing to do with codes and geography unfortunately and I need to find some places given in polygon points. It has been written something like POLYGON 1 To right Y 470333 to up X 4358838
How ...
4
votes
0answers
50 views
Preventing ogr2ogr from generating invalid geometries in transformation
I have the following GeoPackage: https://drive.google.com/open?id=1COcGcbZQIsW6NrzuD-K-Kijpvg4BYQ54
I have checked it with spatialite and it does not have invalid geometries.
It has a ...
0
votes
0answers
9 views
ArcGIS Pro - map series - grid - dynamic coordinate system
I have a map series with different coordinate systems for each map.
Map series spatial reference is based on EPSG Code which is an attribute in the index layer so the coordinate systems of the maps ...
2
votes
1answer
46 views
QGIS Grid Shift Files
QGIS is freezing on a transformation between EPSG:26912 and EPSG:3402. It appears to be looking for a grid shift file AB_CSRS.DAC which I can get from the federal government but I don't know how or ...
1
vote
1answer
83 views
What is the coordinate system?
I am basic user of GIS. I have a project in Rwanda and have received CAD information in a coordinate system I am unaware of. In addition this isn't the first time I have come across similar references ...
1
vote
1answer
26 views
Changing the Map Projection of a DEM File using gdalwarp?
I have downloaded the moons dem from: https://astrogeology.usgs.gov/search/details/Moon/LRO/LOLA/Lunar_LRO_LOLA_Global_LDEM_118m_Mar2014/cub
I want to change the projection to create a new ...
6
votes
1answer
89 views
Shifting poles in QGIS
I'm looking for a method to shift the poles vertically in Mollweide projection using QGIS 3.
I have come across this website and I want to do something similar.
This is the default view of the ...
1
vote
0answers
39 views
Auto-generate Grid Reference for Point and Polygon features within existing Shapefile, QGIS
I have various point and polygon layers (shapefiles) which I use regularly in QGIS (3.6.3), and often need to work out their location as an 8 figure grid reference (British co-ordinates, EPSG-code ...
2
votes
1answer
71 views
What is the meaning of “SI-D-48-Gauss_Kruger” projection used in an ESRI WKT string?
Recently I encountered the following WKT CRS definition from an ArcMap project:
PROJCS["SI-D-48-Gauss_Kruger",GEOGCS["GCS_Bessel_1841",DATUM["D_Bessel_1841",SPHEROID["Bessel_1841",6377397.155,299....
1
vote
1answer
57 views
How to reproject raster image from WGS84/Pseudo-Mercator to ECEF to ENU in python? [closed]
I am new to GIS and I am writing a program that should work with a cartesian coordinate system, ENU. Therefore my plan is convert all point coordinates from WGS84/Pseudo-Mercator to ECEF and then to ...
2
votes
1answer
40 views
Draw a polygon from the mentioned data
I want to draw a polygon from the below JSON data from a GeoJSON file. However I am confused about the coordinates array since I believed they corresponded to a latitude and a longitude. But clearly ...
2
votes
1answer
28 views
List of available transformations between two coordinates system in epsg using geotools
How we can have the list of available transformation between two coordinate systems using geotools? e.g. the list provided of epsg.io between EPSG:32066 and EPSG:4326
https://epsg.io/32066
Java ...
1
vote
1answer
47 views
Keep raster data in original projection and just display it using a new transformation (at the poles) in R vs ArcMap
Desired output: Raster with original characteristics but in transformed projection using R (I.e. See second paragraph here.). NB, I need to do this for 100s of different rasters.
You can achieve this ...
1
vote
1answer
44 views
Choosing CRS for Chicago, Illinois
I have data for Chicago, Illinois, that is in WGS84 CRS. I need to convert it to a metric projected CRS, and I've found several possible options:
EPSG 3528
EPSG 6454
EPSG 2790
EPSG 26971
Among these,...
1
vote
0answers
27 views
Print functions for data projection and rename file
I have been struggling with functions in this script as I would like to see the projection in the file and then rename. The problem is that it causes and definitions are not done properly
Here is the ...
0
votes
0answers
43 views
OpenLayers 4: Load baselayer outside projection extent
I have a map that uses EPSG:3912. Then I have base layer from CartoDB. When I zoom out I see:
My question is, if it's possible to have CartoDB layer loaded outside map extent (so that it fills white ...
2
votes
1answer
90 views
Figure out which coordinate system being used
I'm working in a project that have no documentation and I'm trying to figure out which coordinate system is being used in their API.
What I know is that they have a coordinate like this:
latitude: -...
1
vote
0answers
24 views
Error User-defined methods must return a value - what should my function return?
I have written a function that supppose to reproject my sentinel 1 image (Resolution 10 meters) to my sentinel 2 images (20 meters). I have written the function but I am missing the return part ...
2
votes
1answer
19 views
Incorrect Extent when importing images into ArcMap 10.7
I have 2 JPG images of the same pixel size and of the same square mile area, with identical JGW and aux.xml files. One displays correctly, the second does not.
I am stumped, and it seems that ESRI ...
1
vote
1answer
31 views
Georeferencing NASA, NOAA, and Natural Earth Projections in QGIS
I'm new to QGIS. I'm currently using the newest version-- 3.10. I downloaded a raster projection (a tiff file) and vector data (SHP files of coastlines and rivers) from Natural Earth I to import as ...
1
vote
2answers
41 views
Finding geographic coordinates of shapefile using ArcPy with ArcMap
I want my Python script to check if the first coordinate in a GeoJSON polygon is within a polygon in ArcMap, and if so draw the polygon to a featureclass. My issue is that the GeoJSON file is using ...
0
votes
1answer
30 views
Reproject image collection according to the projection of another image collection
I have two image colelctions. one of sentinel 1 and one of sentinel 2.
I want to reproject the sentinel 1 so its' projection and cell size would be like the sentunel 2 images.
It worked for me when I ...
0
votes
1answer
30 views
Projection of TRMM in dictionary
I am trying to extract the 24 hour precipitation data of a given polygon by creating a dictionary . I have gotten results but i'm not sure if the parameters I have inserted in the reducer are correct.
...
1
vote
0answers
35 views
Why extract returns NAs on the boundary when polygons exactly overlap with the rasters in R?
I'm new to GIS and English is not my first language, so apologies for anything inappropriate.
I'm trying to use extract() to get mean values of rasters inside polygons. One of the R codes I used are
...
0
votes
0answers
32 views
Creating a buffer around line segments in QGIS [duplicate]
I am trying to create buffers around a shapefile of rivers, the shapefile consists of line segments. I am trying to create a 5,25, 75, 100-meter buffer around the lines using the multi-distance buffer....
1
vote
2answers
88 views
CRS error working with Solaris [closed]
result_polys = sol.vector.polygon.georegister_px_df(mask2poly,
affine_obj=tile_tfm,
crs= 'epsg:4326')
...
0
votes
0answers
48 views
Identifying unknown coordinates/coordinate system
I have a set of data for the country of Chile which has geospatial information in the form of 'XX0000X' where X is a letter and 0 is a number. I have not been able to figure out what these coordinates ...
