I found this link to the Geoid Data for Aerospace Toolbox:
Because, of course, the Add-on Explorer just doesn't work (seems like a known issue), thus I can't click on
to attempt to get these through the Explorer. I have the Aerospace Toolbox installed and licensed to use.
This page has a "Download" link which downloads the file "aerospacegeoiddata.mlpkginstall". Running this file opens the Add-on Manager (which works fine), and it claims everything is installed successfully.
When I then navigate to C:\ProgramData\MATLAB\SupportPackages\R2023a\toolbox\aero\aerodata\aerogeoiddata
there are no .mat files here. This location was added to my Matlab Path (I assume by the add-on manager install).
But when I then try to run
geoidheight(lat,lon,'egm2008')
which requires 'geoidegm2008grid.mat' (presumably from the Geoid Data for Aerospace Toolbox), I get an error. Indeed running
which('geoidegm2008grid.mat','-ALL')'
gives
'geoidegm2008grid.mat' not found.
How can I get this require mat file?? Why did the install claim success but the folder contains no mat files??