Hello, One remark: In order to get 2D Roughness data in Gwyddion you have to filter waviness (i.e. wavelengths >Length_of_image/5) before usage of the Statistical Quantities tool. I don't know if it is easily possible in Gwyddion. 2D FFT filter cannot be adjusted (as far as I know) by exact value - only by mask...
Best regards Ales Marek, Ph.D. Research and Development HVM Plasma, spol. s r.o. Na Hutmance 347/2, 158 00 Prague 5, Czech Republic e-mail: ales.ma...@hvm.cz phone: +420 251 087 132 fax: +420 251 612 400 http://www.hvm.cz -----Original Message----- From: David Necas (Yeti) [mailto:y...@gwyddion.net] Sent: Tuesday, March 16, 2010 2:01 PM To: Gwyddion use discussion Subject: Re: [Gwyddion-users] Roughness parameters of an area On Tue, Mar 16, 2010 at 12:15:01PM +0100, Andrej Znidarsic wrote: > I was wondering whether is it possible to measure roughness parameters of an > area, as i have been only able to measure ISO roughness across a line. Hello, the ISO two-dimensional (surface) roughness parameters are not available as a group. Nevertheless, a number of them are identical to basic statistical characteristics shown by Statistical Quantities tool http://gwyddion.net/documentation/user-guide-en/statistical-analysis.html#stat-quantities or are directly related to them (e.g. Peak-Peak is simply maximum minus minimum). Other quantities are available elsewhere, such as fractal dimension, with several calculation methods (one of them corresponds to the norm IIRC). Regards, Yeti ------------------------------------------------------------------------------ Download Intel® Parallel Studio Eval Try the new software tools for yourself. Speed compiling, find bugs proactively, and fine-tune applications for parallel performance. See why Intel Parallel Studio got high marks during beta. http://p.sf.net/sfu/intel-sw-dev _______________________________________________ Gwyddion-users mailing list Gwyddion-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/gwyddion-users ------------------------------------------------------------------------------ Download Intel® Parallel Studio Eval Try the new software tools for yourself. Speed compiling, find bugs proactively, and fine-tune applications for parallel performance. See why Intel Parallel Studio got high marks during beta. http://p.sf.net/sfu/intel-sw-dev _______________________________________________ Gwyddion-users mailing list Gwyddion-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/gwyddion-users
