Questions tagged [egm2008]
The egm2008 tag has no usage guidance.
7 questions
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Query for EGM2008 geoid height at Lat/Long in PostGIS
Problem:
I'm trying to retrieve Geoid height at a latitude longitude via PostGIS using the egm2008 dataset. I've tried multiple locations but keep getting no value returned by my query.
I don't know ...
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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 ...
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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 ...
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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 -...
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Is EGM2008 different to WGS84 ellipsoid?
I have a DEM dataset which describes the vertical reference used as "height above the WGS84 ellipsoid".
As I understand it this assumes vertical values to have MSL as a reference and NOT ...
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How to get the EGM96 and EGM2008 elevations of a list of WGS84 lat/lng coordinates from a file using GDAL?
I'm trying to do the following:
Given a list of WGS84 latitude / longitude pairs in a text file (one pair per line), I'd like to compute the EGM96 and EGM2008 elevations corresponding to those points ...
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What's this 8 byte "padding" in the EGM2008 data?
I recently downloaded the 1' earth gravitational model 2008 Und_min1x1_egm2008_isw=82_WGS84_TideFree dataset from here. According to the readme, the file consists of 233,301,600 32-bit floating point ...
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