I do not have a question on how to use the program, the wiki covered that well.
My question is about the formula embedded in the program to calculate the contrast.
The formula is ((wm-gm)/((wm+gm)/2))*100
This creates a dynamic range of -200 to +200. Which the last time I checked is not really a percent as the command name implies.
Was there some reasoning behind this that I am missing?
Phil Greer University of Pittsburgh
Yes, that was actually a mistake on my part. It does go between -200 and +200. doug
On 10/16/2012 11:02 AM, Phil Greer wrote:
I do not have a question on how to use the program, the wiki covered that well.
My question is about the formula embedded in the program to calculate the contrast.
The formula is ((wm-gm)/((wm+gm)/2))*100
This creates a dynamic range of -200 to +200. Which the last time I checked is not really a percent as the command name implies.
Was there some reasoning behind this that I am missing?
Phil Greer University of Pittsburgh _______________________________________________ Freesurfer mailing list Freesurfer@nmr.mgh.harvard.edu https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer
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Phil Greer