[GRASS-user] GRASS raster curvature analysis type

[Markus Metz]

On Wed, Sep 14, 2016 at 1:07 AM, Djordje Spasic <issworld2000 at yahoo.com> wrote:
> Dear Mrs. Patrasova, Mr. Metz, Mr. Kudrnovsky, Mr. Neteler,
>
> Thank you all for the replies!!
>
> @ Mr. Metz:
> So curvature analysis in GRASS are neither Gaussian nor Mean curvature
> analysis types? Did I understand that correctly?

You can do both in GRASS. Get the principal curvatures you need with
one of the previously mentioned modules, then calculate Gaussian (K1 *
K2) and/or Mean ((K1 + K2) / 2) curvature.

Markus M

>
>
> @ Mr. Kudrnovsky, Mrs. Patrasova:
> Both source codes seem to mention the profile and tangential curvature.
>
>
> @Mr. Neteler:
> The book is a bit expensive (for my country) but seems to be quite good as
> well!
> I also not sure just looking at the equations would help me identify whether
> it is Gaussian or Mean curvature type, due to my non-mathematical non-GIS
> background.
>
>
> Kind regards,
> Djordje Spasic
>
>
>