So what would the syntax be for doing a column run Hilbert, and row run Hilbert?
It does sound like the suggesting would do what I think it is meant to. X = hilbert(data) // does compute pretty fast! At the moment I have used the netCDF code to read in GMT (net CDF) data, which is a 601 x 601 matrix (x,y). So in order to do the column and row method is it necessary to transpose the matrix, e.g. x = x' ? Thanks for any pointers On 5 February 2016 at 19:02, Tim Wescott <[email protected]> wrote: > Any time you go from 1D to 2D you suddenly end up with more than one way > to do things, so I'm pretty sure that "how would one..." should really > be worded "how would YOU...", or perhaps "how would someone in this > field...". > > It sounds like you want to keep things rectilinear, so it may be best to > just apply the transform column-by-column and row-by-row. That SHOULD > work, and if you do it as matrix operations it should be pretty fast in > Scilab. > > On Fri, 2016-02-05 at 12:52 +0000, Lester Anderson wrote: >> Hi Serge, >> >> I am working with grid data, so looking for the 2D Hilbert, the >> results I think should appear similar to doing a directional >> derivative, where X highlights features with N-S trends and E-W for Y. >> >> Lester >> >> >> >> On 5 February 2016 at 12:24, Serge Steer <[email protected]> wrote: >> > Le 05/02/2016 10:56, Lester Anderson a écrit : >> >> >> >> Hello >> >> >> >> A quick query. How would one define the Hilbert transform of a grid >> >> for X and Y directions; looking for two solutions Hx and Hy (for the >> >> real values). >> > >> > Can you explain more precisely what you expect? >> > Do you want to apply Hilbert transform to each column and to each rows or >> > to perform a 2D Hilbert transform? >> > Serge >> >> >> >> >> >> Thanks >> >> Lester >> >> _______________________________________________ >> >> users mailing list >> >> [email protected] >> >> http://lists.scilab.org/mailman/listinfo/users >> >> >> > >> > _______________________________________________ >> > users mailing list >> > [email protected] >> > http://lists.scilab.org/mailman/listinfo/users >> _______________________________________________ >> users mailing list >> [email protected] >> http://lists.scilab.org/mailman/listinfo/users > > -- > > Tim Wescott > www.wescottdesign.com > Control & Communications systems, circuit & software design. > Phone: 503.631.7815 > Cell: 503.349.8432 > > > _______________________________________________ > users mailing list > [email protected] > http://lists.scilab.org/mailman/listinfo/users _______________________________________________ users mailing list [email protected] http://lists.scilab.org/mailman/listinfo/users
