On 2 de mayo de 2014 12:47:50 GMT+01:00, [email protected] wrote:
>Good morning,
>
>my question is the following. I have to calculate the roughness with
>its
>error bar from images with 3 nm height islands on silicon oxide.
>Unfortunately, also some crystals are present. They are quite height
>and
>not properly scanned by the afm. The roughness I have to calculte
>should
>not be referred to those crystals so I decided to use masks to get rid
>of
>them.
>
>My problem is that with masks I cannot get a roughness value with its
>error bar. If I use in Gwyddion the option "Calculate row/column
>statistical function" there is not the possibility "Exclude masked
>region".
>
>I can get the roughness from the other option "Statistical quantities"
>but
>again no error bar.
>
>How can I get a roughness value with error bar even if I have to use
>masks
>to get rid of crystals?
>
>Thank for the help
>
>Stefano
>
Would remove data from under masked region help? After that it should not 
matter if you have a mask.

-- 
Sent from my Android device with K-9 Mail. Please excuse my brevity.

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