Glynn Clements wrote:
Aldo Clerici wrote:
I have a very simple question regarding the output of r.slope.aspect.
I know that slope and aspect are the first derivatives of elevation and are
expressed in degrees, while profile and tangential curvatures are the second
derivatives of elevation. What I would like to know is the units in which
curvatures are expressed.
In other words, what does it mean a curvature of 0.05?
Curvatures will be in 1/metres, e.g. a curvature of 0.05 corresponds
to a radius of curvature of 20m.
I have added this info to manual. Thanks.
BTW, I noticed an issue with r.slope aspect - it ignores, by desing,
the MASK set. Shouldn't it conform and let use the MASK?
Maciek
Maciej Sieczka wrote:
>> I have a very simple question regarding the output of r.slope.aspect.
>> I know that slope and aspect are the first derivatives of elevation and are
>> expressed in degrees, while profile and tangential curvatures are the second
>> derivatives of elevation. What I would like to know is the units in which
>> curvatures are expressed.
>> In other words, what does it mean a curvature of 0.05?
>
> Curvatures will be in 1/metres, e.g. a curvature of 0.05 corresponds
> to a radius of curvature of 20m.
I have added this info to manual. Thanks.
BTW, I noticed an issue with r.slope aspect - it ignores, by desing,
the MASK set. Shouldn't it conform and let use the MASK?
Yes.
--
Glynn Clements <glynn@gclements.plus.com>