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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VDatum to transform MHHW to WGS84 error code

I am using VDatum vdatum.noaa.gov/ to transform the vertical coordinates of a surface from MHHW to WGS84. I am getting the error code below: Exception in thread "C:\Users\User\Desktop\Honduras\O_file....
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Convert MHHW (mean highest high water) to WGS84, or NAVD88

I am trying to create a tidal surface to use in mapping sea level rise. My first step was to create a raster surface from points in ArcGIS. I then used VDatum from NOAA to transform that surface from ...
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Modified British System “Italy South” grid - wide residual error georeferencing maps in ArcMap or QGIS

In accordance with the information of a previous thread on this platform, I am trying the georeference some war maps of Italy within the "Italy South" grid of the Modified British System. I work with ...
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How to convert XYZ to from-to format with azimuth and dip information?

I have an Excel spreadsheet with header, survey, and assay drill data. Header data contains hole ID, location coordinates, and length. Survey data contains related downhole survey with distance, ...
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How to plot points that were recorded as meters of distance (X and Y) from a benchmark into a map? [closed]

How can I put the 2 points from the table below into a map? The "lat" and "lon" are the coordinates of a reference point (location of the RTK base station), these two columns are constant for all ...
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Conversion of X and Y coordinates

I have been researching some Tennessee Valley Authority (TVA) documents from 1947 that show the location of an item of interest to me as X=3,160,900 and Y=730,000. But, when I try to get Google Maps ...
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Exporting a globe projection of a TIFF as a PDF

I'm trying to export a globe projection of the 'Natural Earth II with Shaded Relief, Water, and Drainages (large)' as a pdf but I keep getting the following error: Could not transform bounding box to ...
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Conversion of EGM96 to NAVD88

I am new to ArcGIS and geoids/ellipsoids, and I want to convert a dataset in EGM96 (the USGS SRTM DEMs) to NAVD88. I have the SRTM dataset from NASA downloaded and open in ArcGIS as .hgt files. I ...
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Converting QGIS X,Y info to lat, long using Python

I am trying to convert QGIS x,y points into the lat, long coordinates. I have (335687.7471962841, 4487822.535352517) supposedly point to somewhere in the Chicago metropolitan area. I tried the ...
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Invalid projection

I am using a shapefile with an invalid projection, is there anything I can do to get a valid projection? I want to add another layer and now I can't match the projections.
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exporting xyz projection issue

I'm having an issue exporting .xyz and getting the correct projection. I would like exported in EPSG: WGS84 and have played around with setting project projection and layer projections. But I cannot ...
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How to get the projection of ui.Map in Google Earth Engine?

I know it's 3857, but I would really like to not hard-code it, only so that the script fails later when the GEE team decides to switch. What I tried is to get the projection from a displayed image of ...
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Why does a coordinate system transformation warp distances?

I have two points in NAD_1983_UTM_Zone_8N: A: 520474.065771355,7146471.63532946 B: 523398.322298721,7146491.17961279,1056.79350172838 Distance A-B: 2925.739824m When I convert them to ...
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Earth Engine ee.ImageCollection export mis-projected

I am exporting MOD10A1 imagery from Google Earth Engine and the exported data are not aligned properly in space. I tried defining the export crs as per Nicholas Clinton's advice here but to no avail. ...
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Is this transformation using square metres or kilometres (3857/32633)?

I am using geopandas to compute population per km2. However, I don't know if this transformation is using meters or kilometers. gacs_df = gpd.GeoDataFrame(acs_df.merge(census_gdf2, on="geo_12", how="...
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Georeference a LAS file with txt2las using a Geomedia coordinate system file (.csf)

I need to transform a file in a .csv file into a LAS file. I have a LiDAR data folder, in this folder I have these files: A .csv file that contains the the point data Some metadata files (schema, ...
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Coordinate System Mismatch In Folium

I'm trying to get familiar with Folium library in Python. I wanted to make a web-map of Turkey. Framework uses EPSG:3857 Web Mercator CRS as default. I tried to use approximate coordinates at the ...
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How do I change this exif data into long and lat?

I've been using ImageMagick in a Linux terminal but I'm not sure how to read the coordinates it's giving me. If you can't see the picture, the data is: Properties: date:create: 2020-05-21T12:33:...
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Calculate percentage overlap of 2 sets of polygons in R

I have a map of NC counties. I have overlayed two circles, representing the coverage area of two radio transmitters in the state: ### Make transmitters df rm(list = ls()) library(tidyverse) library(...
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Projection identification

Looking for 1914 world boundaries, I've found those https://github.com/kgjenkins/tq-world-historical-boundaries. Looking more the source of this was http://web.archive.org/web/20080328104539/http://...
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QGIS YandexMaps and Google Maps difference

I added to QGIS Yandex maps and Google maps as XYZ Tiles. But there is a difference about 20 kilometers.Is there a solution to overlap these maps?. Or can i convert the coordinates with a ...
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How to see uploaded Shapefile into QGIS 3.12? [closed]

I'm an absolute beginner so I imagine this is an easy question. I upload a shapefile and it shows up as a layer, buy I can't find what I uploaded anywhere. I saw it could be something with the CRS but ...
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Bay Area Synthetic Network node/line coordinates

I just started working with the Bay Area Synthetic Network and was wondering if this dataset has location (lat/lon) information. I have visualized the files with QGIS, but when it comes to exporting ...
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Compute elevation and azimuth from lat, lon, and altitude

Given the latitude, longitude and altitude of two points (in my case satellite and ground antenna) I would like to compute the azimuth and elevation angle between the two points from the ground ...
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ValueError: Cannot transform naive geometries

I was trying to execute this code: # Load geojson files country = gpd.read_file('svn_buffered.geojson') train_shp = "large_training_aoi.geojson" test_shp = "large_test_aoi.shp" train_polyg = gpd....
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Find longitude intersection of given latitude at z=0 for a globe

I have a globe image that is centered at lat,lon. At this lat,lon, by definition x=0, y=0, z=1. A line of latitude drawn on this map can either be completely visible (in which case it would be drawn ...
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Trouble with CRS projection in geopandas vs geoplot

I have a dataset in excel that I want to plot using GeoPlot. The data was captured in EPSG:32608 (WGS84/UTM zone 8N), so I have set the crs accordingly. When I plot the data using geopandas, the plot ...
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which coordinate system are x and y in?

I am trying to figure out which coordinate system x and y are in? For example, 1. for the address from Miami, Florida, the longitude is -80.2956825, latitude 25.94238253, and the corresponding x is ...
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Leaflet.js custom coordinate system

Background: Display topographic plans of a specific size (1500 meters x 1500 meters). The source images of tiles can be of different sizes and resolutions. It is required to display on the plan some ...
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Add an ESRI projected coordinate system to PostGIS

I was trying to add to PostGIS a new projected coordinate system, the ESRI World_Cylindrical_Equal_Area, 54034. I have searched for it in epsg.io but it is not available there. I would have liked to ...
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Do elevation measurements differ between Coordinate Reference Systems? If so, can they be converted?

I have global elevation data captured in relation to the WGS84 ellipsoid, and a local elevation dataset which uses the OSGB 1936 CRS. Would one expect the values to be different, given that the two ...
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I have a GeoTIFF that is in “WGS 84” and unts of degrees, and need to get it in units of meters. How to convert using gdal?

Below is the gdalinfo, I don't really know enough about GDAL to acomplish changing the units, I also don't want to change the number of cells, which seemed to happen when trying out gdalwarp. But ...
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41 views

How to get decimal degrees instead meters from X Y coordinates in QGIS?

I created a new project with decimal degrees system. Then I created a new layer and created a point on it. When I click on my point I see in attributes X and Y attributes in decimal degrees but when I ...
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How can I transform X Y coordinates of NAD83 Texas North Central to latitude and longitude, preferably in Python?

I am at my wit's end here! For a project at work, I am plotting a simple map in Power BI that pinpoints some of our internal utility permitting activity. One of the datasets I have been given appears ...
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gdal2tiles for artistic map of specific size in kilometers

Imagine large hi-res image in ratio 2:1, which represents area of 10000:5000 km. The goal it to publish this map on web using e.g. openlayers with the pan/zoom support, yet enabling measurement (...
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Missing areas when using mosaic after projectRaster or vice versa

I have 290 MODIS NPP tif tiles that I want to merge and project into EPSG 4326. mosaic_raster() works just fine (Fig 1) but when I project the global raster (with or without a template) I lose almost ...
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Projecting urban political boundary files onto U.S. Census blocks QGIS — Cannot get them to map correctly

I am trying to project cities' political boundaries (each city is its own shapefile) over a national Census geography layer of Census block groups in QGIS. I know reprojection questions have been ...
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Add Custom CRS to QGIS 3.10: Validate:“is valid” OK:“is not valid”

I am trying to define a coord. ref. sys. CRS which is used in my county, which is not included in QGIS, v3.10.4-A Coruna. The Steps: fetch definition a. visit: SpatialReference.org b. search for "...
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Reprojecting data from EPSG:3857 into Peru UTM Zone 17

I am trying to reproject EPSG:3857 Spherical Mercator OpenStreetMap Data to the local Peruvian UTM Zone 17. How do I find out which transformation method is suitable for +-1m accuracy? I have SAFE ...
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Error while reprojecting CSV-file with pyproj

I am trying to reproject a csv-file and here's the error i get. File "C:\Users\jonat\Anaconda3\lib\csv.py", line 98, in fieldnames self._fieldnames = next(self.reader) Error: iterator ...
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Determining coordinate system from 1981

I am looking for help to determine a coordinate system used in 1981 in south east BC, Canada. The coordinate system is retrieve from some old logs, and I need to plot and find the point locations. An ...
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Help spTransform CRS for use in leaflet

I am producing Kernal density estimates for animals from tracking data. Location is input at x y data, I produce a spatial polygons dataframe from these coordinates. xy<-id[c("X", "Y")] id<-id[...
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R raster extent (origin) has weird values

I have a single band raster r with a large extent (several European countries). I assigned a CRS to it with: crs(r) <- CRS('+init=EPSG:3035') Properties of r: > r class : RasterLayer ...
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Sensor frame to global frame transformation matrix

I am using Carla simulator in which all data is represented using various coordiantes. But for convenience i turn all data into standard cartesian frame(the simulated world is only a few sq.kilometers)...
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Exporting a single feature out of featureCollection as shapefile in Google Earth Engine

Does any one know, how to export a single feature out of featureCollection in Google Earth Engine? I am using below code to export every features separately. The fetureCollection has 33 different ...
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28 views

3D Rayshader Plot looks compressed compared to static 2D plot

Sorry if this is an extremely obvious question, however I'm not sure why it's happening. I'm trying to plot the provinces of Canada as 3D map, however whenever I render them, they end up looking mis-...
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Results of gdalwarp from UTM32 to EPSG:4326 are not aligned?

I've a Sentinel 2 jp2 in UTM32 with this metadata: Files: T32UQD_20200421T102021_TCI_60m.jp2 Size is 1830, 1830 Coordinate System is: PROJCS["WGS 84 / UTM zone 32N", GEOGCS["WGS 84", ...
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Method to determine of coordinates in GeoJSON feature are Lat/Lng or UTM?

Is there a @turf or any other helper method to quickly determine if coordinates in GeoJSON feature are Lat/Lng or UTM?
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GDAL command to salvage GeotTIFF output that threw an error

I used gdalwarp on a large NetCDF file with the intention of getting a high quality geotiff in spherical mercator. I ran the following command which took three days to complete on my laptop: gdalwarp ...
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ImageCollection contains Images with different CRS

I'm using Google Earth Engine Python API in Jupyter. I'm working with an ImageCollection from Sentinel 2 Surface Reflectance dataset for a given area on a single day and filtering by a region of ...

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