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FFT feature suggestions

Posted: Fri Aug 28, 2009 9:07 am
by toddbatzler
First, nice program, good value.

Humble suggestions, modifiable because I'm ignorant and willing to be educated....

Plotting magnitude and phase. Both are on 'independent' Y axes. I'd like to plot the magnitude on linx/logy but I get an error saying this can't display negative numbers. But the magnitudes, by definition are not negative and the phase is suppose to be on an 'independent' Y axis.

An option to plot/export FFT data as complex values, rather than mag/phase would be handy.

An inverse FFT function would also be handy.

Posted: Fri Aug 28, 2009 12:40 pm
by DPlotAdmin
Plotting magnitude and phase. Both are on 'independent' Y axes. I'd like to plot the magnitude on linx/logy but I get an error saying this can't display negative numbers. But the magnitudes, by definition are not negative and the phase is suppose to be on an 'independent' Y axis.
The trouble there is DPlot isn't set up to have a linear scale on one Y axis, logarithmic on another. Will look into adding that capability.
An option to plot/export FFT data as complex values, rather than mag/phase would be handy.

An inverse FFT function would also be handy.
Can't do the second w/o the first. This will definitely go on my list; have put it off too long.