That flag is needed if your input is larger than the required size by FreeSurfer 256x256x256. You would not use it on input that did not require it (ie it is smaller than 256x256x256). 


On Mar 10, 2011, at 4:53 AM, Kenichiro Tanaka <ktanaka@j-adni.org> wrote:

Hello All,

I have a question about recon-all command with "-cw256" option.
What is the difference between "recon-all" and "recon-all with -cw256"?
What is "-cw256 option"?

When I tried executing recon-all command, I had an error message:
****************************************
 ERROR! FOV=320.000 > 256
 Include the flag -cw256 with recon-all!
****************************************
I did the following using another 001.mgz file:

I compared aseg.stats file after "recon-all" execution with aseg.stats file after
"recon-all -cw256" execution using "diff" command.
aseg.stats file after "recon-all " execution was much different from aseg.stats file after
"recon-all -cw256" execution.
What's wrong with it?

I tried to search information about "-cw256"on internet, but I could not find out.
Please tell me -cw256.

Thanks.

Kenichiro Tanaka
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