"Forrest " <Remove.email@example.com> wrote in message news:firstname.lastname@example.org... > I'm using the 'psd' function to take the power spectral > density of a waveform. Afterwards I can view the plot of > the psd, however, I can't seem to find the data that is > being plotted from the psd. I have the plot, but I can't > find the x and y coordinates. I can't use ginput because > there are 5000 data points.
Get a handle to the line that PSD plotted using FINDOBJ. Once you have that handle, GET the XData and YData properties.