Geographic Information Systems

Questions tagged [coordinate-system]

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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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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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54 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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1answer
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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29 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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1answer
34 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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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
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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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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51 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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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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3answers
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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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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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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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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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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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
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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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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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
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
73 views

Setting CRS to ESRI:102001 using GeoPandas

I've been passed some GeoJSON shape data that I've been told is in the CRS ESRI:102001, although that property has not been written into the GeoJSON file. I've been able to confirm that is the correct ...
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24 views

Create Fishnet issues with measurement distance

I am trying to create a regular soil sampling grid based upon digitised field extents. I had posted a previous question today relating to issues with coordinate systems and displaying the sample ...
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39 views

ArcGIS XY Coordinates [closed]

I am working with ArcMap to generate regular soil sampling points. These need to be displayed in TM75 Irish Grid. I have the projected coordinate system of the data frame set to TM75, appropriate ...
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1answer
34 views

Trying ST_Slope with SRTM rasters and a shapefile but the output raster has different SRID

I have two SRTM rasters https://dds.cr.usgs.gov/srtm/version2_1/SRTM1/Region_06/ (N40W074 and N40W075) with Datum "WGS_1984" I've united them to be able to work with one raster: CREATE TABLE rasters....
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Published Map Services in SRID 4326

I've been tasked with creating webservices of individual layers in Portal for ArcGIS. The data itself is stored in SQL Server in SRID 4326 (WGS84 unprojected). I'm wondering if it's a better idea to ...
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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?...
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45 views

Mathematic Formula to convert GGM-32N to WGS-84 [closed]

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 ...
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22 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 ...
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1answer
58 views

What Projected or Geographic Coordinate System should I use to calculate km distances between various points on a large scale map? [closed]

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 ...
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1answer
71 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: ...
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42 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: ...
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35 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 ...
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1answer
47 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["...
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29 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["...
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1answer
38 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
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1answer
29 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
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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 ...
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1answer
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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 ...
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2answers
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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 ...
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46 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 ...
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1answer
37 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 ...
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2answers
23 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 ...
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0answers
30 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/...
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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 ...
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0answers
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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
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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-...
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24 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 ...
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1answer
41 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 ...

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