AFNI Message Board

Dear AFNI users-

We are very pleased to announce that the new AFNI Message Board framework is up! Please join us at:

https://discuss.afni.nimh.nih.gov

Existing user accounts have been migrated, so returning users can login by requesting a password reset. New users can create accounts, as well, through a standard account creation process. Please note that these setup emails might initially go to spam folders (esp. for NIH users!), so please check those locations in the beginning.

The current Message Board discussion threads have been migrated to the new framework. The current Message Board will remain visible, but read-only, for a little while.

Sincerely, AFNI HQ

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d6anders
September 09, 2013 08:12PM
Hey all,

We are creating a the Pearson's coefficient, correlation matrix created between time series from several ROI's. To do this we are using the 1ddot with the -dem option. The hope was you might be able to fill us in on how the program deals with missing data. And how to best represent those removed time points so they don't throw the results off.

For instance when leaving blank spaces in our text file for censored time points the results are slightly different from those derived via Matlab's processing the same data with "NaN's". Any suggestions or better approaches to ensure results are accurate?

~`Dane
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Subject Author Posted

1dDot Correlation Matrix (+ missing data)

d6anders September 09, 2013 08:12PM

Re: 1dDot Correlation Matrix (+ missing data)

Bob Cox September 10, 2013 07:06PM

Re: 1dDot Correlation Matrix (+ missing data)

Daniel Glen September 11, 2013 03:11PM

Re: 1dDot Correlation Matrix (+ missing data)

rick reynolds September 11, 2013 03:40PM