Vertical Datum issue in Custom CS

Nice effort.
There is an issue while choosing Vertical Datum. There is no choosing option for the already downloaded geoids. For example I cannnot find the EGM2008 when I set up my Coordination System.
Also, an extra “edit” button for later use will be nice.

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Hi Kostas,

Sorry for keeping you waiting!

Would it be possible to share the screen recording of the issue so that we can easily understand it?

Hello

I attached 8 pics

Pic 1) For my job I use GGRS87 coordinate system.

Pic 2) I can choose a vertical datum (EGM2008)

Pic 3) I edited a new projection system (it is a transformation from HTRS07 to GGRS87 and I use it while working with an NTRIP service (base/ RTK or Static)

Pic 4) Parameters of HEPOS

Pic 5) Parameters of HEPOS

Pic 6) Parameters of HEPOS (but Geoid model is not correct, I chose one of the available)

Pic 7) Geoid while editing my own

Pic 8) Geoids while editing my own - there is no ellipsoidal, EGM96, EGM2008 to choose)

I believe I made it clear now.

Ofcourse if you need extra info, I will be glad to help.

Hi Kostas,

EGM2008 and EGM96 are based on the us_nga_egm08_25.tif and us_nga_egm96_15.tif geoids, respectively. You can choose them in the Geoid model tab while creating a custom CRS, even if they were downloaded previously. To work with ellipsoidal heights, you may just disable the geoid option.