On Mon, Jun 15, 2009 at 07:48:51AM +0000, Gregor Hlawacek wrote: > On Mon, 2009-06-15 at 09:38 +0200, David Necas (Yeti) wrote: > > On Sun, Jun 14, 2009 at 05:15:47PM -0700, [email protected] wrote: > > > > > > 1. I would like to extract a profile right on the axis of the 2D fft > > > image, e.g. the y=0 frequency line, > > > > I wonder why you don't just use horizontal PSDF in the statistical > > functions tool. > > I don't know Tim's particular reasons for not using the horizontal PSDF > but I think they might be similar to mine. I agree that such a feature > would be nice, because often I would like to make the section in an > arbitrary direction, as structures on the surface are not necessarily > aligned vertical on the image.
Now we are getting somewhere... So what you actually need, is to calculate PDSF not just along x averaged in y[*] or vice versa, but also in other directions, right? I still don't know what is the best method to do this but it makes more sense. What about selecting interactively a direction in the real space and calculating PSDF along this direction? Yeti [*] The y=0 section of 2D Fourier transform image corresponds to summed x-transforms for individual rows. ------------------------------------------------------------------------------ Crystal Reports - New Free Runtime and 30 Day Trial Check out the new simplified licensing option that enables unlimited royalty-free distribution of the report engine for externally facing server and web deployment. http://p.sf.net/sfu/businessobjects _______________________________________________ Gwyddion-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/gwyddion-users
