On Fri, Mar 25, 2011 at 01:53:03PM +0100, luis vazquez wrote: > it seems that the option "subtract" in 2D FFT filtering does not > work. In previous versions of Gwyddion I had also problems (the > filtered image was totally black when the subtract option was > applied) and in 2.23 it even does not draw the box in order to > subtract it (the add option does work).
Hello, could you be more specific what kind of subtraction you mean? The only place actually mentioning subtraction is the tooltip for ellipse/rectangle undrawing – do you mean that, i.e. subtraction in the FFT mask editor? Or the preview of difference between original and filtered data? Anyway, everything seems to work for me (even trying under MS Windows, well, under Wine actually, but it should be the same). Maybe this is just misunderstanding, both adding and subtracting work with the FFT mask. So to subtract maningfully, you have to subtract from something – usually from a full mask created by Fill but also from anything else you have drawn on the Fourier image. Regards, Yeti ------------------------------------------------------------------------------ Enable your software for Intel(R) Active Management Technology to meet the growing manageability and security demands of your customers. Businesses are taking advantage of Intel(R) vPro (TM) technology - will your software be a part of the solution? Download the Intel(R) Manageability Checker today! http://p.sf.net/sfu/intel-dev2devmar _______________________________________________ Gwyddion-users mailing list Gwyddion-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/gwyddion-users
