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.
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