Re: [Freesurfer] Threshold values changed/modified before display.

2020-04-26 Thread Bruce Fischl

Hi  Devavrat

freeview definitely does not modify the values in any volumes you load 
for display.


cheers
Bruce
On Sun, 26 Apr 2020, Devavrat Vartak PhD wrote:



External Email - Use Caution

Hi freesurfer developers!,
I am using Freesurfer 6.0 and the latest (freeview  -beta) to display overlays 
on my flat surfaces.

I am a novice user of freesurfer and I am a bit confused with how the overlays 
are displayed /
thresholds calculated.

My overlay of rsquare values ranges from 0.2 to 1.0 (i.e all are positive 
values.). When the overlay is
loaded, the threshold histogram depicts values that are negative and positive 
(centered around zero).

1) Does freeview recaluate/modify the values before they are displayed?
2) Is it possible to display the values of the overlay as they are?  


Thank you. Stay healthy and safe!

Best,
Devavrat


___
Freesurfer mailing list
Freesurfer@nmr.mgh.harvard.edu
https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer

[Freesurfer] Threshold values changed/modified before display.

2020-04-26 Thread Devavrat Vartak PhD
External Email - Use Caution

Hi freesurfer developers!,

I am using Freesurfer 6.0 and the latest (freeview  -beta) to display
overlays on my flat surfaces.

I am a novice user of freesurfer and I am a bit confused with how the
overlays are displayed / thresholds calculated.

My overlay of rsquare values ranges from 0.2 to 1.0 (i.e all are positive
values.). When the overlay is loaded, the threshold histogram depicts
values that are negative and positive (centered around zero).

1) Does freeview recaluate/modify the values before they are displayed?
2) Is it possible to display the values of the overlay as they are?


Thank you. Stay healthy and safe!

Best,
Devavrat
___
Freesurfer mailing list
Freesurfer@nmr.mgh.harvard.edu
https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer