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Questions tagged [wgs84]

WGS 84 (that spelling) is the name of an ellipsoid (EPSG::7030), the name of a geodetic coordinate reference system (EPSG::4326), and the alias of a datum (EPSG::6326), official name World Geodetic System 1984. WGS84 (no space) is the alias of the ellipsoid (EPSG::7030). WGS 84 is most commonly used to describe the coordinate reference system.

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How to represent UTM coordinates on the XY plane?

For the sake of clarity: I am very sorry if this question is inaccurate but I find it difficult to understand different terminologies in the geographic information systems. Let us consider the UTM ...
pion3k's user avatar
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Transform from Bessel to WGS84

Is there direct transform possible from Bessel ellipsoid to WGS84? This coordinate pair corresponds to same point on Earth but importing them for example in QGIS results in 100m shift. Bessel (EPSG:...
Oto's user avatar
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Intersect a 'circular' sector with a 'square' on WGS84

I wold like to get the intersection(if empty or not) and area of a circular sector defined by the origin(lat, lon), bearing and angle width with a 'square' defined by lines of constant lat and lon on ...
Silviu's user avatar
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Autolisp & JavaScript convert Lat/Long to X(Easting) Y(Northing)

I'm wanting to create a BricsCAD script which takes Lat/Long WGS84 and converts it into the BNG Easting/Northing Similar to Grid Reference Finder, Webapps BGS Converter & Google Earth's long/lat ...
Josh's user avatar
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Making transformations between ellipsoids using PyPROJ

I am transforming coordinates between the Ellipsoids WGS84 and Hayford International using the code from pyproj import CRS, Transformer Define CRS objects for WGS84 and Hayford International ...
nic's user avatar
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Calculating coordinates grid intervals - minutes and seconds in QGIS

I would like to define the coordinates for the grid to 15' intervals. This means ideally 15°15', 15°30' Here are the coordinates for the grid/area of interest: 15°48'0"E 16°0'0"E 16°12'0&...
Amelia Nicodemus's user avatar
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Small Offset in QGIS Reprojection from WGS84 to ED50

I have a .shp in QGIS in EPSG:32637 (WGS84/UTM Zone 37N) and I want to reproject it to ED50, which is in this case EPSG:23037. When I do it manually in in QGIS, the reprojection works fine and both ...
hector's user avatar
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How to fix islands being offset from map, boundary comes from KML file uploaded to a site

I'm having a problem where islands (uploaded as part of a KML file) don't match up to the location of the island on the map when I upload them to a particular site (iNaturalist). It affects whether ...
RukiyaMeria's user avatar
1 vote
2 answers
120 views

Transforming from UTM Clarke 1866 Ellipsoid to WGS84 (ASTER Level 2 surface reflectance data)

I have acquired some Level 2 ASTER surface reflectance data however this is in Clarke 1866 Elipsoid, not WGS84. QGIS/GDAL appears to be unable to make this conversion and so far I have not found any ...
SHV_la's user avatar
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Moving correctly projected features from ArcGIS Pro to UgCS

Goal: get a 1/10 Nautical Mile radius circular feature (currently in NAD83/CA State Plane VI WKID:2230), in a .kml file, from ArcGIS Pro (3.1) into UgCS mission planning software (4.21.0) as an ...
IAmAPatientBoy's user avatar
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Plotting XY coordinates obtained from Google Maps

I know how to plot XY coords in ArcMap—right click the table, plot XY, select geographic coordinate system (coords are in degrees), etc. My question is rather when selecting the GCS I always go with ...
Geo_Brittany's user avatar
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Are there algorithms available to draw a straight line in 3D space based on WGS 84 points?

Given two points (A,B) defined in the WGS 84 system - i.e. each with their own Lat-Long-Alt coordinate the plane T tangent to the WGS84 ellipsoid at point A is there an algorithm/formula to compute, ...
Federico's user avatar
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Soil moisture index from European drought observatory

For my current task, I am using the soil moisture index data from the European Drought Observatory. In the download section, the data is natively provided in the Lambert Azimuthal Equal Area ...
Shaz's user avatar
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Shapefile layer is offset when reprojected to WGS 84

I have some shapefiles in UTM EPSG:37721, however, to cut the variables I need the polygon in WGS84. When I redesign my square shapefile in WGS, it appears crooked in QGIS. Is this right? Because if I ...
Rogério's user avatar
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Wrong Coordinates in QGIS Map Grid

These are incorrect decimal degree coordinates for Puerto Rico. Layers are suppossed to be georeferenced or is this common for layer not georeferenced?
kim's user avatar
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Changing a raster format and coordinate system: GeoTiff in WGS84 to ASCII in UTM 35N

I have a DEM in GeoTIFF format in EPSG 4326 - WGS84 that I export from WindPro. I want to use the same DEM as input for another wind software that accepts only ARC/INFO ASCII GRID (ascii) format and ...
rasvan.manea's user avatar
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Raster Projection Error 999999

I tried to change the coordinate system of a TIFF file from UTM to Albers Equal Conic using project raster tool. However, I keep getting this error. Any one knows why? where is the problem?
Hafidz Abdillah's user avatar
1 vote
2 answers
84 views

Raster Vertical Projection ArcGIS Pro v3.1.2

I'm trying to do a vertical coordinate system transformation on a raster, from WGS84 to NAVD88. I have downloaded and installed the appropriate coordinate systems package but cannot accomplish this ...
DJ-MT's user avatar
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Point Files not always aligning based on Coordinate System

I have two CSV files that have GCP points for a drone survey area. The points are exactly the same location just collected in different coordinate systems. First is NAD83 (CSRS) / UTM 10N and the ...
Colin 's user avatar
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Projection issue between WGS84 and EPSG:2100

I got a new GNSS receiver (Sparkfun RTK Faucet) and I also setup my base station. Now I am collection GPS date points down to an accuracy of about 14mm. My goal is to convert the data points to the ...
Stephen's user avatar
1 vote
2 answers
338 views

Transforming from NAD83(2011) or from WGS84 gives the same result (pyproj)

I'm trying to transform (using pyproj) the same coordinates, first from WGS84, and then from NAD83(2011), and I'm getting the same result: from pyproj import CRS, Transformer from_wgs84_transformer = ...
paul's user avatar
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2 votes
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How can I determine point coordinate sysystem?

I downloaded GIS data from IPUMS NHGIS. The polygons points are for example: "[-1967092.8957,1446306.6612]" I attempted to convert automatically in https://mapshaper.org/ using "-proj ...
Jeryl Cook's user avatar
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Grids displaying relative instead of global coordinates in QGIS

I have a set of three zoomed-in maps I need to plot grids for. They need to be in degrees, minutes, seconds and relative to the global standard. The grids I was able to plot all show relative ...
Barbara Perez de Araújo's user avatar
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181 views

Transform TEME TLE derived positions of a GPS satellite to the WGS84 coordinate system for comparison

I am trying to compare TLE derived x,y,z positions of a GPS satellite with those derived from precise GPS ephemerides (NGA). However, I am having some trouble getting the coordinate systems and ...
woplda123's user avatar
1 vote
1 answer
387 views

What is the importance of altitude in coordinates (WGS84)

I have these parameter in my system. <AirportReferencePoint>N27584300 E034233600 43.586400</AirportReferencePoint> What is the use of the altitude 43.586400 in these parameters?
mahmoud youssef's user avatar
1 vote
1 answer
79 views

Importing WGS84 points into project CRS OSGB36 broken, showing black screen

I am relatively new to all things GIS. I am trying to import CSV points collected in WGS84 format eg. LAT 55.93887932 LONG -4.50803484, into a project with CRS set to OSGB36 (EPSG: 27700). This is ...
user228735's user avatar
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1 answer
48 views

Projection issues Landsat 5 in QGIS

I'm using an image of Landsat 5 in QGIS and even though I fix the projection to WGS84 EPS: 4326 using Raster tool Warp. The projection is out of focus. I normally work with Landsat 8 and never had ...
Ray's user avatar
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ArcGIS Pro - Voxel layer doesn't show even though all coordinate systems match

I created a NetCDF file and then added it as a multidimensional voxel layer to ArcGIS Pro. I then got this warning: Voxel layer can only be drawn in local scenes with the same coordinate system as ...
Horse's user avatar
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Converting DXF format using Beijing 1954 datum to WGS84 [closed]

I have a file in DXF format. I am trying to convert this format to shapefile, but CRS does not match. The information I have is that the Coordination System is in DXF format and has UTM-based ...
Teddy Sosan Yun's user avatar
1 vote
2 answers
740 views

Convert WGS84 to Local Point

I have WGS84 points and I should convert to local coordinates (x, y, z) and plot in ThreeJs. I referred the below article and created a converted (refer code below) Article: Calculate distance, ...
Premkumar Jayaseelan's user avatar
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400 views

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 ...
Taylor Roberts's user avatar
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2 answers
272 views

Convert centroid data to lat/long coordinates

I have a geoJSON file from Alameda County, California, that says it is based on "crs": { "type": "name", "properties": { "name": "urn:ogc:def:crs:...
Zachary Russell Heineman's user avatar
1 vote
1 answer
147 views

WGS 84 terrain import to SketchUp

I am trying to create a 3D terrain map in Sketchup, based on a DEM file from the UK LIDAR series. I can add the DEM to QGIS as a raster layer and then use DEMto3D to produce a mesh in .stl format ...
Chris's user avatar
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64 views

QGIS rendering weird line segment offset for geographic coordinates

I'm seeing a weird line segment offset in QGIS when comparing a single line segment specified with geographic coordinates (EPSG:4326) to the same line using UTM coordinates (EPSG:32734). I start off ...
SeanMcLeod's user avatar
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1k views

Get height above ellipsoid (HAE) of the surface of the Earth given a lat,lon coordinate?

I am looking for a way to compute the approximate HAE (height above ellipsoid of WGS84) of a point at the surface of the Earth at a specific latitude and longitude. Is there a simple way to get this ...
Lelouch's user avatar
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1 answer
535 views

Where do I find the grid file "Und_min1x1_egm2008_isw=82_WGS84_TideFree.gz"?

I want to download the file Und_min1x1_egm2008_isw=82_WGS84_TideFree.gz. I went to https://earth-info.nga.mil/index.php?dir=wgs84&action=wgs84 and downloaded under Data/Apps -> EGM2008, this ...
sehan2's user avatar
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2 answers
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How to convert wgs84 from ellipsoidal height to mean sea level i.e. height above goid, with pyproj?

I want to convert wgs84 coordinates with ellipsoidal height to wgs84 coordinates with height above goid. Therefore I have set up a new conda environment and installed pyproj, proj_data, see conda list ...
sehan2's user avatar
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3 votes
1 answer
182 views

QGIS input coordinate precision

I imported a point geometry layer into QGIS using a delimited text file (CSV) that contained the latitude and longitude values projected in CRS WGS84-EPSG:4326 with 6 decimal places (e.g. 38.145695). ...
guls's user avatar
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1 answer
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Finding the correct UTM zone for set of coordinate in R

I have a set of points (coordinates) which is in WGS84 UTM but I don't know the zone to convert it to Lat/Lng to be able to put it on the map ! I was wondering if there is a way of extracting the zone ...
Haribo's user avatar
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1 answer
963 views

Incorrect WGS84 to UTM conversion in GeoPandas to_crs and estimate_utm_crs

Does anyone ever encounter this weird inconsistency in GeoPandas to_crs and estimate_utm_crs: import utm import numpy as np import geopandas as gpd from shapely.geometry import Point for lon in range(...
Edward Chen 's user avatar
3 votes
1 answer
98 views

Interactive calculation of object area depending on its location in the UTM zone using QGIS

I want to interactively calculate the area of a geometric object and use different projections depending on its location. Source data is stored in WGS 84. The area should be calculated in the WGS 84 ...
Comrade Che's user avatar
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3 votes
3 answers
253 views

Coordinate system to be used with qgis2web (QGIS to Leaflet)

For my project in University I want to create an interactive map. My Prof told me, Leaflet only uses WGS84, but he wasn't sure. When using the qgis2web plugin, should I have WGS84 as project ...
Chewcata's user avatar
4 votes
4 answers
801 views

Difference between converting a projection into WGS84 first before converting it to a intended coordinate system vs. converting projection directly

I have an assignment that required us to convert projection using two different method. First method, convert directly from current coordinate system (Kertau_RSO_Malaya_Meters) into GDM 2000 Johor. ...
Gaby John's user avatar
1 vote
1 answer
2k views

Lat/lon after moving x meters to a specified direction

I have recently been working with coordinate systems in Python with pyproj package. I'm facing the following problem: I know my current position from a GPS receiver as EPSG:4326 latitude/longitude ...
Zni's user avatar
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2 votes
1 answer
615 views

Convert image from EPSG:4326 to EPSG:3857

I'm new to GDAL and map projections, I need to convert equirectangular (EPSG:4326?) projection to "pseudo Mercator" (EPSG:3857?) projection used by 90% web-based maps (which is simple this 0/...
Martin's user avatar
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2 votes
0 answers
261 views

Convert EPSG and vertical datum of a DEM file

I have DEM files that are in EPSG:4326 - WGS 84 and use latitude and longitude for coordinates. The elevation units are in meter but use the WGS84 ellipsoid with WGS84 elevation. I want to convert ...
ParcoMolo's user avatar
1 vote
2 answers
276 views

Slope calculation with datasets in different CRS

I have a shapefile containing several zones. This file is in CRS EPSG:32644 (WGS 84 / UTM zone 44N). I have a DEM file (originally in CRS EPSG:4326 - WGS 84) that I converted to EGM08. The elevation ...
ParcoMolo's user avatar
1 vote
0 answers
83 views

Setting negative DEM values for the sea and water bodies to zero

I've downloaded a few of the Cartosat-1 CartoDEM Version-3 R1 files from BHUVAN (https://bhuvan-app3.nrsc.gov.in/data/download/index.php). The files seem to be in the WGS84 format and have values of -...
ParcoMolo's user avatar
1 vote
1 answer
305 views

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 ...
GuillemB's user avatar
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151 views

Error in WGS84 to Mercator coordinate transformation

I'm trying to convert the (lat,lon) of WGS84 into Mercator (x,y). Below I've listed all the relevant information given in the file. Datum="WGS84" Ellipsoid="WGS84" ...
Pixel_Bear's user avatar

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