Hi,
I'm an AFNI newbie and I'm trying to use 3dDeconvolve on my already pre-processed NIFTI file (.nii). My nii file is written out in Matlab and it's 32-bit float. When I ran 3dDeconvolve, I see these warning messages:

*+ WARNING: anov_test+orig[5] scale to shorts mean misfit error = 49.6% -- ***** Purple Alert! *****
+ a) Numerical precision has been lost when truncating results
from 32-bit floating point to 16-bit integers (shorts).
+ b) Consider writing datasets out in float format.
In most AFNI programs, use the '-float' option.
+ c) This warning is a new message, but is an old issue
that arises when storing results in an integer format.
+ d) Don't panic! These messages likely originate in peripheral or
unimportant voxels. They mean that you examine your results.
"Assess the situation and keep a calm head about you,
because it doesn't do anybody any good to panic."

There're a lot of these "purple alert"; I attached the full output. Is this Ok or I need to do something about my input data?

Thank you very much,

--taosheng liu