> Hello. I am a researcher at the University of Michigan. I am using AFM > for a number of imaging application in mineralized tissues. I am > specifically looking at collagen in these tissue. Collagen has a very > periodic repeat structure along its axial length. I would like to be > able to perform a 1D FFT on a line scan along an individual fibril to > determine the periodicity of the repeat pattern.
Hello, it might or might not help you that you can calculate one-dimensional PSDF, i.e. the FFT coefficient modulus, in arbitrary rectangular areas using Statistical Functions tool. The result is summed over all included rows/columns. If you need output more like the 2D FFT modulus output, just with transform only in one direction performed, I can implement it, it should be quite easy. Regards, Yeti ------------------------------------------------------------------------------ This SF.net email is sponsored by: SourcForge Community SourceForge wants to tell your story. http://p.sf.net/sfu/sf-spreadtheword _______________________________________________ Gwyddion-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/gwyddion-users
