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Hi all,
I encountered a problem calculating anomalous maps with fft (using the GUI).
The script correctly assigns the anomalous difference to DANO, but the map I get
is the inverse (peaks at negative values). When I subtract 90deg from the phases
and force DANO to be type "F" and calculate a "normal" fft, I get the correct
map. FFT being a seasoned program, I find it hard to believe that this is a
bug... A (admittedly not very thorough) glance through the source indicates that
PI/2 is correctly subtracted from the phase (not added, which would result in
the observed phenomenon). The "phenomenon" of maps calculated by inputting
DANO/PHI vs. DANO->F/PHI-90 being the inverse of each other is reproducible with
other datasets. Am I doing something wrong here or did I indeed stumble over a
"feature"?
Cheers,
Jens
