Forrest
Posts:
19
Registered:
8/25/08


Re: How to extract data points from a plot (can't use 'ginput')
Posted:
Aug 25, 2008 11:00 AM


"Steven Lord" <slord@mathworks.com> wrote in message <g8ug33$u1$1@fred.mathworks.com>... > > "Forrest " <Remove.this@yahoo.com> wrote in message > news:g8uf2j$j5s$1@fred.mathworks.com... > > 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. > >  > Steve Lord > slord@mathworks.com > > Steve,
I'm not very familiar with 'findobj'. Can you walk me through how to do this.
Thanks!

