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Sorry for multiple responses, but thank you for clarifying me issue, R. I will contact my informatics hub for further assistance since the issue is more to do with the software I am using.

Thank you for your assistance Best wishes Zola

On 22/4/20, 10:01, "freesurfer-bounces@nmr.mgh.harvard.edu on behalf of freesurfer-request@nmr.mgh.harvard.edu" <freesurfer-bounces@nmr.mgh.harvard.edu on behalf of freesurfer-request@nmr.mgh.harvard.edu> wrote:

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Today's Topics:

1. Re: group analysis of large data sets (Inge Amlien) 2. Calculating standard error in Matlab from whole brain analyses (Graduate Imaging) 3. Re: Freesurfer Digest, Vol 194, Issue 36 (Zola Mannie) 4. Re: Freeview display error {Disarmed} (Zola Mannie)

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Message: 1 Date: Tue, 21 Apr 2020 19:15:23 +0000 From: Inge Amlien inge.amlien@psykologi.uio.no Subject: Re: [Freesurfer] group analysis of large data sets To: Freesurfer support list freesurfer@nmr.mgh.harvard.edu Cc: "greve@nmr.mgh.harvard.edu" greve@nmr.mgh.harvard.edu Message-ID: A9B51F52-39BB-4587-949B-C5CFD7A088F3@psykologi.uio.no Content-Type: text/plain; charset="us-ascii"

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Hi Doug, three years later and an order of magnitude more subjects. Any chance you could raise the limit of maximum number of subjects further (>60K)?

Thanks a lot, Inge _________________________________________ Inge Kasbohm Amlien, PhD Center for Lifespan Changes in Brain and Cognition University of Oslo, Norway

On 28 Mar 2017, at 18:24, Douglas N Greve <greve@nmr.mgh.harvard.edumailto:greve@nmr.mgh.harvard.edu> wrote:

version 6 should be able to go up to 20,000

On 03/28/2017 11:45 AM, Wang, Xin wrote: Thank you, Dr. Greve. when I ran >2000 subjects in Version 5.3, I received this error message "##ERROR: gdfReadV1: the number of inputs in FSGD file exceeds the maximum allowed 2000##" In your previous post about mri_glmfit, https://protect-au.mimecast.com/s/RYHfC71R2NTyDWOYFW5MqH?domain=mail.nmr.mgh..., I found #define FSGDF_NCLASSES_MAX 128 #define FSGDF_NVARS_MAX 128 #define FSGDF_NINPUTS_MAX 2000 Are these the maximum? The mri_glmfit is written in C. Could you send me a version of mri_glmfit code without limits? Thank you very much.

Xin

-----Original Message----- From: Douglas N Greve [mailto:greve@nmr.mgh.harvard.edu] Sent: Monday, March 27, 2017 1:47 PM To: freesurfer@nmr.mgh.harvard.edumailto:freesurfer@nmr.mgh.harvard.edu Subject: Re: [Freesurfer] group analysis of large data sets

I don't think there is a maximum size. You would do the big analysis the same way as the small.

On 03/26/2017 07:54 PM, Wang, Xin wrote: Hello, FreeSurfer Group,

What is the maximal matrix size for glm_fit process?

How to use FreeSurfer for group analyses of more than 2000 subjects, 128 variables, and 128 Classes?

Thank you.

Xin

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