Re: [Gwyddion-users] roughness

2011-03-15 Thread Palma D'Antonio - Unifg
D'Antonio Il 15/03/2011 13:54, David Necas (Yeti) ha scritto: On Tue, Mar 15, 2011 at 11:04:45AM +0100, Palma D'Antonio - Unifg wrote: I've another question on roughness computation: how can I calculate the sampling step (nanometers) relative to a particular value of cutoff frequency

Re: [Gwyddion-users] roughness

2011-03-15 Thread Palma D'Antonio - Unifg
(Yeti) ha scritto: On Tue, Mar 15, 2011 at 03:52:39PM +0100, Palma D'Antonio - Unifg wrote: I'm sorry, I think we are talking of different things. Probably. I mean that using the 'roughness tool' (ISO button) we select a cut-off value in order to filter our data (digitalized using a DFT