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Questions tagged [wgs84]

WGS84 is a geodetic coordinate system, the World Geodetic System 1984 (EPSG:4326).

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Change Lat/Long Geo Coordinate to Meter WPF

My project require me to find the coordinate of the target point using Traverse method. I can't find any example that allow me to get the target coordinate by using geo coordinate lat long on my map(...
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1answer
33 views

CRS conversion of a point from Pulkovo 1952 (58) Stereo70 (ESPG 3844) TO: WGS84 (ESPG: 4326)

I have a shapefile loaded from delimited text with exact Northings and Eastings in the Romanian CRS (ESPG:3844). The layer CRS is correctly defined. Meanwhile, my project CRS is WGS84 (ESPG 4329). ...
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1answer
66 views

Google Earth Engine scale definition and export

I am trying to download Global Surface Water (Pekel et al 2016) data from Google Earth Engine. It has a specified maximum spatial resolution of 30 [presumably meters]. When I export the data ...
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1answer
54 views

Projection Error with Google Maps Basemap

I have a shapefile of building lots in Manaus, Brazil, that I have re-projected into the WGS84 (EPSG:4326) CRS using the "project" tool in ArcGIS. I am now working in QGIS, and am trying to add the ...
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1answer
33 views

Changing srs-definition string in geopackage with ogr2ogr

When creating a geopackage with ogr2ogr in WGS84 (EPSG:4326), the srs-definition string cannot be interpreted correctly when loading the data into ArcGIS. ArcGIS does not project the data corretly ...
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1answer
52 views

Calculating area in the attribute field of a QGIS 3.4.3 project with multiple CRS

The area calculations in my project derived from the attribute field show values way below actual area, because the attribute field assumes the project CRS (EPSG:3857). However, this CRS should remain ...
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36 views

Calculate the next coordinate from given starting point and distance

On the answer to Calculating Latitude/Longitude X miles from point? what is the tc value? lat = asin( sin(lat1)*cos(d)+cos(lat1)*sin(d)*cos(tc) ) dlon = atan2( sin(tc)*sin(d)*cos(lat1),cos(d)-sin(...
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1answer
85 views

Translating WGS 84 datum to mean sea level?

I'm very new to GIS so here my question is I have WGS84 DEM data for my country and I want to calculate the sea level rise. I will use QGIS raster calculator, my problem is I need to find sea level ...
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1answer
135 views

Converting NAD83 (epsg:4269) to WGS84 (epsg:4326) using pyproj

I'm trying to convert US census data (NAD83) to WGS84. I know the difference between the two is quite minor, but trying to apply the transformation using pyproj does not do anything. e.g.: from ...
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How to convert WGS84 coordinates to screen pixel coordinates? [duplicate]

I have a set of points that are defined as WGS84. In ArcMap the featureclass details are: Geographic Coordinate System: GCS_WGS_1984. Datum: D_WGS_1984 Prime Meridian: Greenwich Angular Unit: Degree. ...
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36 views

Unknown coordinate system from web API

I'm trying to figure out (and eventually convert to WGS) projection system of coordinates I get from one web API service. As an example - lat, long = 71804125, 180232666 is a point in Cracow, Poland. ...
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How to use coordinates search bar in QGIS?

When using coordinates search bar in QGIS, it sends me to a completely different location. The GPS coordinates style is 37.381096, 14.561191 and the project is set to EPSG: 3857 with OpenLayers ...
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How to convert from EUREF-FIN to WGS84 in geopandas

Trying to convert ETRS-TM35FIN coordinates in the EUREF-FIN projection to WGS84 in geopandas with this: x = 429300 y = 7084490 df = pd.DataFrame([[x,y]],columns=['x','y']) df['Coordinates'] = list(...
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1answer
93 views

Differences in angle measurements in Web Mercator

I am trying to measure different angles on 2D map using lat/lon coordinates taken from Google Maps, and Java library JTS. I have noticed a weird thing: my measurements are always distorted, except ...
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1answer
94 views

How do I get polygon shapefiles to project correctly in WGS 84?

I have a map with three layers: "Dorset Points", point shapefile "Counties...", polygon shapefile "Kilwood Park", raster I'm trying to project all three layers onto WGS 84. The project CRS is set as ...
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1answer
74 views

If rectangle corner points have same nearest neighbor, does whole interior?

If all four corners of a spherical (but actually WGS84/elliptical) rectangle are closest to a given point p in a set S, does that necessarily mean all points inside the rectangle are also closest to p?...
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QGIS reprojection is identical to original map; Deir ez Zor / Levant Stereographic (EPSG:22780) to WGS 84/UTM zone 36N (EPSG:32636)

I have a topo map which I want to georeference into Deir ez Zor / Levant Stereographic (EPSG:22780) and then transform into WGS 84/UTM zone 36N (EPSG:32636). My goal is have as little divergence to ...
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Avoiding grids when transforming between SRS using ogr2ogr?

I'm trying to use ogr2ogr to transform from NAD27 (EPSG:4267) to WGS84 with my custom "towgs84" Bursa-Wolf parameters. However, I think the ogr2ogr uses grids which are part of the GDAL installation ...
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1answer
82 views

What does it mean to reproject a satellite image from utm (zone 13N) to wgs84?

I'm trying to understand some legacy code that processes landsat satellite images. Source images are in UTM and they are reprojected to WGS84. I'm a GIS noob but I understand that WGS84 is a datum for ...
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QGIS map wraparound in WGS84

I am learning QGIS. I'm working with the 'Natural_Earth_quick_start' data set from the tutorials. The WGS84 projection gives me the view I want. However, this looks like a sheet of paper, and on the ...
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Improving reprojection accuracy

Main question: how can I improve the accuracy of my reprojection? I am combining my dataset to a previous one, and I have chosen a different CRS: the previous one is in WGS 84 (EPSG:4326) and mine is ...
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2answers
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How to add meters to EPSG:4326 coordinates? [duplicate]

I've some lat/long in EPSG:4326 coordinate system like Eiffel Tower position : ["lat" : 48.858274,"lon" : 2.2944] For automated tests I would like to get, for every points of my dataset, the x and y ...
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2answers
536 views

Translate Cartesian coordinates to WGS84, preferably in pyproj?

I have some Cartesian coordinates: x = 3862525.511 y = -109738.522 I need to translate them into WGS84 coordinates, preferably using pyproj. Is this possible, or have I misunderstood the nature of ...
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SNPP Viirs swath data reprojection to wgs84

How can I reproject this file: I downloaded from: https://ufile.io/dev4b ftp://nrt4.modaps.eosdis.nasa.gov/allData/5000/VNP14IMG_NRT/Recent/ I tried using gdal... but I'm not so expert, so can't ...
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1answer
144 views

Why is the length of one degree in Turf 0.9988?

Calculating the (spherical) distance along one degree of longitude at the equator in Turf returns a number less than 1 (Try it): require('@turf/turf').distance([0,0], [1, 0], { units: 'degrees' }) 0....
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59 views

GTA V coordinates transformation to WGS84 [duplicate]

I'd like to use GTA V coordinates in leaflet to show some markers on the map. How to do a transformation between the (unknown) coordinate system of GTA V to WGS84 (leaflet)? I already tried to write ...
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1answer
72 views

reprojecting .MBTILES to WGS

I have a huge ECW file that I clipped (qgis>clipper) to smaller GeoTiff and reprojected it(qgis>warp) to WGS 84 and then converted it (qgis>translate) to MBTILES but! The MBTILES file came out at ...
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1answer
85 views

What's the math behind moving from a starting point in the direction of another one?

I am working with decimal-degree coordinates for a software and lack geographic background. I want to convert the coordinates to a grid to calculate distances and then move around using standard ...
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1answer
60 views

Using OS MasterMap and Transverse Mercator projection in ArcMap?

I'm trying to use the Transverse Mercator projection in ArcMap, but cannot seem to locate it in the coordinate system list. I'm very new to GIS and ArcMap. I'm going to try to use some data from ...
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1answer
124 views

Creating a Grid in WGS 84 in Feet

I am using Using QGIS 18.16 to try and create a grid measured in feet. I am having some issues with the best way to create a accurate grid in a project projected in WGS 84. I know that it uses ...
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111 views

Projecting Lambert WGS 84 using QGIS?

I am currently preparing raster layers in QGIS to be fed into MaxEnt to run a species distribution model. I downloaded climatic variables in ascii format from I downloaded from Adaptwest (https://...
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118 views

QGIS layer stretched

I try to work out a way to assemble the layers I have got in my QGIS project so that no layer appears to be stretched. original coordinate systems: vector layer: WGS 84 UTM Zone 34N raster layer: ...
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1answer
135 views

Loading NAD83 and WGS84 layers together in QGIS?

I have downloaded parcel files for several counties in Washington State, and am attempting to overlay them on the OpenStreetMap Standard base layer (which is in WGS84 Pseudo Mercator). The majority of ...
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119 views

Convertion of Geotiff from EU-DEM EPSG:3035 - ETRS89 / ETRS-LAEA to WGS84

I have downloaded elevation data from EU-DEM My background is in software engineering and my GIS skills are limited. How can I convert the aforementioned geotiff to WGS84 format geotiff with lon/lat ...
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112 views

QGIS 3.0 is showing a point's coordinates in the original spatial reference system instead of the project's spatial reference system

I obtained GPS coordinates of a point to within a couple centimeter accuracy using RTK GPS in the NAD83 Spatial Reference System. This information is included in the QGIS layer file metadata, and the ...
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1answer
55 views

Project raster tool stays white at iteration in ModelBuilder?

I want to project a bunch of rasters (WGS84) to different UTM (WGS84) coordinate systems. The coordinate system depends on a field value of a point shape. So on each raster lays a point with its ...
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1answer
126 views

Getting relative XY coordinates

EDITED I started a project with CRS WGS 84 /Pseudo Mercator and I created a shapefile including point features in different locations around the globe. I have been already working on that for a while ...
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Vector CRS change 'extents too large'

Just trying to update an old project but for some reason it was set up in EPSG:4326, WGS 84. I have no idea what base maps were originally used to create it as they are no longer on the system, and ...
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1answer
58 views

Extract lat/long from GeoTIFF with Mercator CRS

I have a GeoTIFF file and with gdalinfo command I found the following info: Size is 1200, 1400 Coordinate System is: PROJCS["unnamed", GEOGCS["WGS 84", DATUM["WGS_1984", ...
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37 views

reprojected shapefile cannot be displayed in target CRS

I have digitized two polygons in WGS84 from an orthophoto image using QGIS. I reprojected the layer which contains these polygons to EPSG: 2100 (GGRS87 / Greek Grid) either using processing toolbox or ...
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1answer
286 views

Reprojecting EPSG:3412 to EPSG:4326 using GDAL?

I want to reproject "South polar stereographic" projection to "gcs WGS 84". I have tried the solution given to Re-projecting from Polar projection to EPSG:4326? through this commands I am getting ...
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1answer
40 views

Can percent overlap of polygon layers be calculated in geographic coordinate system? [duplicate]

I have two global polygon shapefiles in WGS84, and I would like to generate spatial stats on the % area of one shapefile that is overlapping the other. I understand that geometric calculations such as ...
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2answers
134 views

Looping Projection in ArcGIS ModelBuilder?

I've got a global DEM raster dataset in WGS84 and need to project this to all WGS84 UTM Zones. So after that I should have 120 raster, one in each Zone. Is there a possibility to automate this ...
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1answer
215 views

Finding GPS coordinates of point located between 2 known meridians?

I need to solve this task. How to find GPS coordinates of a point which is 1029.96033 km from prime meridian and 747.67936 km from 25th meridian, using WGS84 standard. It is a particular task but I ...
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Error in projection or just a graphical error?

I've got a worldwide SRTM grid in WGS84 and want to reproject it to UTM coordinates. If I do so in parts of the world are strange tiles of the map (especially in Eurasia), which are not part of the ...
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1answer
264 views

How to map using more 'accurate' DATUM than WGS84? [closed]

WGS 84 is not very accurate as it is a compromise for the whole earth. Assuming theoretically I'm surveying using very accurate IMU and very accurate GPS (in WGS 84 of course). I think I'll get a ...
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Mismatching Admin Boundaries South Asia [duplicate]

I am using ArcGIS Desktop 10.4. I have three boundary levels for Pakistan, with two matching and the third just slightly off so it seems like a projection issue: The red is admin1, dark gray ...
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1answer
1k views

How to convert resolution in degrees to resolution in meters?

I have a raster data with spatial reference GCS-WGS-1984 (datum D-WGS-1984). Its cell size is mentioned as (0.00045, 0.00045) in degrees. How can I convert this resolution in meters (i.e. linear unit)?...
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1answer
118 views

Tranform geometry to WGS 84

I need to transform some line and polygon geometry to WGS 84. At point it working fine, but at the line and polygone I have problems, I tried in many ways, but it does not work. In the screenshot you ...
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1answer
312 views

Transforming from NGVD29 to EGM96/WGS84?

I have this USGS reservoir elevation in NGVD29 datum and I want to transform it to WGS84 ellipsoid (SRTM 1 ArcSec DEM). How can I transform this point data (NGVD29) to EGM 96 or WGS84 ellipsoid so ...