Bug report to octave (repeated below) was reported to have been fixed (http://savannah.gnu.org/bugs/?33683) however, buggy code remains in Gentoo ebuild. Reply: This bug has been fixed here: http://hg.savannah.gnu.org/hgweb/octave/rev/189baf055143 Bug report (to Octave): fftshift requires a second argument that specifies the dimension along which the shift is to be made, even if the first argumwent is a one-dimensional array (i.e., vector). This behavior does not match the documentation (and is inconsistent with MATLAB) which indicates that fftshift may be called with a single argument. Transcript: octave:1> fftshift([1 2 3 4]) error: fftshift: A(I): index out of bounds; value 4 out of bound 1 error: called from: error: /usr/share/octave/3.4.0/m/signal/fftshift.m at line 70, column 14 octave:1> fftshift([1 2 3 4],1) ans = 1 2 3 4 octave:2> fftshift([1 2 3 4],2) ans = 3 4 1 2 octave:3> fftshift([1 2 3 4]') error: fftshift: A(I): index out of bounds; value 4 out of bound 1 error: called from: error: /usr/share/octave/3.4.0/m/signal/fftshift.m at line 70, column 14 octave:3> fftshift([1 2 3 4]',1) ans = 3 4 1 2 octave:4> fftshift([1 2 3 4]',2) ans = 1 2 3 4 octave:5> help fftshift `fftshift' is a function from the file /usr/share/octave/3.4.0/m/signal/fftshift.m -- Function File: fftshift (X) -- Function File: fftshift (X, DIM) Perform a shift of the vector X, for use with the `fft' and `ifft' functions, in order the move the frequency 0 to the center of the vector or matrix. If X is a vector of N elements corresponding to N time samples spaced of Dt each, then `fftshift (fft (X))' corresponds to frequencies f = ((1:N) - ceil(N/2)) / N / Dt If X is a matrix, the same holds for rows and columns. If X is an array, then the same holds along each dimension. The optional DIM argument can be used to limit the dimension along which the permutation occurs. Additional help for built-in functions and operators is available in the on-line version of the manual. Use the command `doc <topic>' to search the manual index. Help and information about Octave is also available on the WWW at http://www.octave.org and via the -unavailable- mailing list.
+*octave-3.4.0-r2 (12 Jul 2011) + + 12 Jul 2011; Rafael G. Martins <rafaelmartins@gentoo.org> + -octave-3.4.0-r1.ebuild, +octave-3.4.0-r2.ebuild, + +files/octave-3.4.0-fftshift.patch: + Revision bump. Fixes bug #373985. Thanks to trubatch@hotmail.com for + reporting. +
