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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Elizabeth Felix
August 11, 2003 06:18PM
I have used 3dmerge to spatially blur an individual dataset using this command:

3dmerge -1blur_fwhm 5 -datum float -doall -prefix blur_RTS RTS+orig

Even though I force it to be a float dataset, I don't see any fractional values (I get all integers) within the data. I have assumed that this type of blurring would results in some time points that were fractional. Am I just misunderstanding the algorithm for the -1blur_fwhm (and, therefore, I should expect only integer values anyway) or is something else going on?

(The RTS+orig dataset consists of integer values only. If I input a dataset that consists of fractions, and use the same 3dmerge command to spatially blur, I *do* end up with fractional output.)

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3dmerge and spatial smoothing

Elizabeth Felix August 11, 2003 06:18PM

Re: 3dmerge and spatial smoothing

bob cox August 11, 2003 06:37PM