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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Making Azimuthal equal-area (Hem.) in QGIS
Like this attached image, I tried many times in QGIS but cannot get this look.
How do I make this map in QGIS?
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How to get Amersfoort 28992 in QGIS?
I am currently analysing landscape change in the Netherlands, for which I am using maps which have Amersfoort 28992 as their standard CRS. However the most recent map uses Amersfoort 4289 instead.
For ...
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Batch converting NAD83 Z12 to NAD83 Z13
I have a need to to convert a CSV file that was surveyed in NAD83 Zone 12 to NAD83 Zone 13 coordinates, is there an online tool that can do this for me?
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OpenLayers 7 WFS 1.1.0 not drawing polygons when srsName contains opengis.net/gml/srs/epsg.xml
I'm writing a web app that uses WFS data on top of OpenLayers with OpenStreetMap. The entire project works in EPSG:2180 projection and uses multiple versions of WFS (depending on server). OL doesn't ...
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New error when running loop, dealing with sf package
EDIT
I am adding a simpler code before I create a loop to address the problem.
The new code:
library(adehabitatHR)
library(rgdal)
library(sf)
library(dplyr)
# Read the csv file
df <- read_csv('...
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Find local plane basis at a location using WGS84
I have orientation data from a drone given as a quaternion with respect to the local reference system (Z is up, X is local east, Y is local north) which is the local tangent plane. I want to express ...
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Understanding Coordinate Reference System of QGIS Project and Layer
I do not understand why there can be in QGIS different CRS for project and for layers. I have worked previously with subsurface petroleum software and there CRS "stuff" was lot more strict ...
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Finding the correct axis order for WCS subset requests
https://ows.rasdaman.org/rasdaman/ows?&SERVICE=WCS&VERSION=2.1.0&REQUEST=GetCapabilities provides various WCS coverages, for example https://ows.rasdaman.org/rasdaman/ows?&SERVICE=WCS&...
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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 ...
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Viewing 3D shapefile in QGIS
I have 3D shapefile which displays fine in QGIS 2D (and 3D in ArcScene), but I am having trouble changing to 3D view in QGIS. Shapefile is an imported polygon set (in a local CRS) > I get the ...
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Offset raster layer with ArcGIS source in OpenLayers?
In my case there are two layers:
raster from ArcGIS REST service (red) and
vector in MVT format (blue)
The problem is that the raster layer is offset from the vector layer. It is assumed that the ...
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QGIS area calculation disparity in identify feature vs PyQGIS
I have a single polygon layer in two different CRSs. I noticed the area calculations are way off between the two CRSs. EPSG 2284 and 5070
I have attached both layers. https://file.io/LRW3NniQU4ji
The ...
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Unable to find needed California State Plane projection in QGIS
QGIS version: 3.12
OS: Mac 12.1
Problem: I am trying to project a map containing parcel boundaries (vector) and orthoimagery (raster) to match the projection used by a set of (offline) project plans (...
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Define Projection Error
When I try to use the define projection tool to change the projection of a layer it will not work for some reason. I am not sure what to do about this. I am trying to change it do GCS_WGS_84
Removing ...
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WGS_1984_UTM_Zone_15N vs NAD_1983_UTM_Zone_15N
I recently ran into an issue where my client's project data was presenting correctly in ArcGIS Pro (abutted correctly, correct location relation to aerial), but was shifting several feet when I opened ...
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Reprojecting unequal number of latitude and longitude: pyproj.exceptions.ProjError: x, y, z, and time must be same size
I have a rectangular matrix of geographic climate data with a 1d row of latitude coordinates (size=834) and a 1d column with longitude coordinates (size=1115). They are both in unit of m (EPSG:32630) ...
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How to convert point in any CRS to cartesian XYZ given the proj4 string?
I have GeoTIFFs of other celestial bodies, such as the moon, and am writing a program in C/C++. I cannot use GDAL but I can use libgeotiff, libtiff, and proj. Some GeoTIFFs are in a polar ...
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"ERROR: Unable to initialize coordinate transformation" when reprojecting from one CRS to another CRS in a different mapset
I am trying to reproject a global raster (this: https://sedac.ciesin.columbia.edu/data/set/wildareas-v3-2009-human-footprint/data-download, I named it HFI) from Mollweide (its projection) to LAEA3035 ...
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PostGIS reproject data
I have an infrastructure layer that is lat/long values and has an SRID of 4269.
I have brought this shapefile into PostGIS to try and reproject the data to 3424 (state plane of NJ)
this is my query ...
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Generating 3d points from GeoTIFF using libgeotiff and proj
I'm working on a C++ library where I need to ingest several different DEM formats (such as GeoTIFFs, SPC Maplets, and some other internal formats) and convert them to a 3d triangular mesh. In the ...
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QGIS custom coordinate reference system of a local site
I am creating a geo database for an archaeological excavation. We want to put data from a local system and from UTM35 in the same QGIS-project. I have Ground Control Points in both systems.
I setted ...
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Reproject VectorSource (or VectorLayer) in OpenLayers 7?
I create the VectorLayer on OpenLayers 7 from GeoJSON:
const geojson = "...";
const style = {...};
const vectorSource = new VectorSource({
features: new GeoJSON().readFeatures(geojson, {
...
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Polygons area calculation in one shapefile with different zones (ArcMap or Google Earth Pro)
My country is extended to 4 zones so for calculating area I must set data frame properties in ArcMap (projected coordinate system). I have one shapefile with many polygons (about 300 polygons). I add ...
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Importing raster files EPSG:3035 (ETRS89, LAEA) into R
My knowledge of both R and QGIS is not very high.
I have a problem with the European DEM layer (25 m resolution) downloaded from the COPERNICUS website. The reference system is EPSG:3035 (ETRS89, LAEA)...
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Basin shapefile into HEC-HMS coordinate system issue
I am trying to import a basin shapefile into HEC-HMS without going through with the whole HEC-GeoHMS process in an attempt to use HEC-HMS to calculate PMP values for the drainage area.
I make a new ...
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Using Geotiffwrite or Worldfilewrite for global TIF in MATLAB?
In MATLAB I have written the code:
[image,geo]=geotiffread('africa.tif');
info=geotiffinfo('africa.tif');
geotiffwrite('Wafrica.tif',image,geo);
but there was error:
geotiffwrite>validateR (line ...
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Plotting map points in different colours in R
I am trying to use mapview() to plot some geographical data, but somehow I can't find a way to plot two different data sets in different colours.
In my case, I want to plot occurrences in summer and ...
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Georeferencing list of polygons in QGIS when CRS is unknown
I have a list of neighbourhood polygons in Casablanca, Morocco, which have an unknown CRS. Here is a link to one of the polygons: (link to a json).
I have tried several CRS in QGIS, but none of them ...
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What does the SMAP grid (EPSG: 6933, EASE-Grid 2.0) looks like?
One of the projections that SMAP (Soil Moisture Active Passive) used is EPSG: 6933 (Global, Equal-Area; EASE-Grid 2.0). For the 9-km resolution grids, the earth data website says the grids has 3856 ...
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Coordinate systems from AutoCAD to QGIS
I am having issues bringing an AutoCAD drawing into QGIS. I currently use AutoCAD with Carlson (surface mining and civil modules). My current workflow for maps is this...
Import points using Lat/Long.
...
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Calculating the area of a multipolygon in GeoPandas [closed]
I have prepared a KML file using Google Earth Pro and then converted it to GeoJSON to import it into GeoPandas - here is a sample of the file. I then tried to project it with to_crs(epsg=4326), but ...
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problems with projecting Galileo images of Europa (the moon) images in QGIS
I am working on a project where I will be using Galileo images. Since I would like to look at the same feature from multiple different angles (something Galileo has taken images of), I would like to ...
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Map disappears after using Natural Earth projection in QGIS
I have a world map using the WGS 84 projection. I can reproject it as Miller, Robinson, or other projections, but when I use Natural Earth I or II, the map disappears. I'm applying this through ...
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Drawing Arc on a map using multiple points: getting proper direction and intermediate point coordinates
I am using the following Swift code to create arcs using Apple's MKMap framework. This should give an idea how things are being calculated...
import Foundation
import UIKit
import MapKit
class ...
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Setting coordinate system of shapefile in R
I created a shapefile (TESTPOLY) in R and set the projection using:
proj4string(TESTPOLY) <- CRS("+proj=longlat +ellps=WGS84 +datum=WGS84 +no_defs+ towgs84=0,0,0")
when I read it into ...
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Concatenate two geodataframes: CRS Adjustment
I have two geodataframes which I would like to concatenate. I have tried this:
test=gpd.GeoDataFrame( pd.concat( [gdf1, gdf2], ignore_index=True) )
where print(gdf1.columns) and print(gdf2.columns) ...
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Variation of height above ellipsoid when traversing an ENU vector
Given a point A on the ellipsoid, for which we have local ENU vectors (noting that the U vector is normal to the surface but does not point to the Earth's center). We move a distance 10km along the N ...
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Units of slope output
I am calculating the slope from the DGM file which is of 1m spatial resolution.
The default CRS is ETRS89 33N 25833 for that particular piece of land in Germany, kustriner vorland.
In what units are ...
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Convert Google Maps coordinates to projected EPSG:2154 CRS: RGF93 v1 / Lambert-93 with the sf R Packge
This is the data I have in input:
> points
# A tibble: 4 × 2
latitude longitude
<chr> <chr>
1 49.5150946 3.4798894
2 49.6635237 3.2990396
3 49.1200986 3.3175965
4 49....
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Why are Mapbox Vector Tile encodings an inconsistent mix of tile-relative coordinates and Web Mercator coordinates? [closed]
Take for example zoom level 1 of Mapbox Streets V8, which consists of 4 tiles:
(x=0, y=0, z=1): North America, etc
(x=0, y=1, z=1): South America, etc
(x=1, y=0, z=1): Asia, etc
(x=1, y=1, z=1): ...
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Transform CRS of Shapfile (sf) and Raster( raster)
I'm working with R. And to have a Rasterfile and a Shapefile. Now I want to fit their CRS/ EPSG so I can plot them together. Several approaches I've tried won't work.
Someone may help?
THE CRS/EPSG:
...
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Does Y mean latitude and X mean longitude in every GIS software?
I am using Mapinfo and it has Y as latitude and X as longitude. Is that the same case for all mapping software? As for any country their respective value is multiple of 1 or -1. So for Nepal can I say ...
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Impossibility to transform coordinates in degree with sf [R]
I would like to convert coordinates from two different CRS on R with the package sf
From
To
DATUM
ETRS89
BELGIAN DATUM 72
Ellipsoid
GRS80
HAYFORD24
Projection
None
LAMBERT [1972]
Coordinates
...
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QGIS 3.22 support for topocentric CRS
I simply try to convert a point from local Cartesian ENU centered on a point with lat,lon coordinates to geocentric ECEF coordinates.
With proj from command line all works well.
I use strings from ...
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Reprojection from EPSG:3857 to EPSG:31468 in deegree
I have source data in EPSG:3857 that is shifted approximately 20 KM north when reprojected to EPSG:31468 in deegree version 3.4.17 and I am trying to determine the cause.
I am wondering if deegree may ...
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Feature service misalignment in ArcGIS Online
I have an issue with feature layers in ArcGIS Online. I am adding an ArcGIS Server web service witch creates a feature layer and then I add the feature layer in a web map. There are 11 layers in the ...
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Get "geometry column" error when importing my csv file on Google Earth Engine through asset tab
I want to localize my plant specimens on Google Earth Engine map by importing a CSV file with two columns, including longitude and latitude, which belong to Quebec province, Canada. After I select my ...
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Converting .kml to different projection in QGIS
I have run into a slight problem it would seem. Yesterday I downloaded qgis in the hope that it could convert a .kml overlay of some administrative boundaries from EPSG:3857 (Google maps) to EPSG:...
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Converting point coordinate from local Cartesian to WGS 84 in QGIS?
I need to convert some cartesian (x,y) meter points coordinate from an origin to WGS 84 using QGIS 3.x API.
I have the lat and long of the origin: lat is +44.0 lon is +9.0 degrees. I try to make a ...
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Converting x,y coordinates to longitude,latitude using QGIS
I'm working with this downloadable shapefile that has X Y coordinates. They are akin to '3672187.92698000, 534175.72095400'.
I would like to convert them to longitude latitude so they are more like '-...
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