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<p dir="auto">My data were previously processed with fmriprep.<br>
I’ve used the participant_prep on my subjects, resampled my masks, both successful. However, when I attempt participant_test, I receive an error that the chnk[sic] length is incorrect. If I select individual participants, the number can change (despite the protocol being the same for everyone). Each subject has one session of four runs of 238 volumes each, for a total of 952 volumes. The chnk length is always a multiple of 238, but not 952 as it should be (I think). It is sometimes 1904, or 2856, etc.</p>
<p dir="auto">For each subject I ran<br>
<code>./mvpa 01</code> etc. for each subject 01-15, which ran the script:<br>
<code><br>
docker run -i --rm \<br>
-v /Users/john/CloudStation/School/Research/fmri/aim1:/data:ro \<br>
-v /Users/john/CloudStation/School/Research/fmri/aim1/derivatives/pymvpa:/outputs \<br>
bids/pymvpa \<br>
--skip_bids_validator \<br>
/data /outputs participant_prep -k ao -p $*<br>
</code></p>
<p dir="auto">Then ran:<br>
<code>./mvpa2 -c altdev famsalt famssame intalt intsame</code> which calls the following script:</p>
<pre><code>#!/bin/bash
docker run -i --rm \
-v /Users/john/CloudStation/School/Research/fmri/aim1:/data:ro \
-v /Users/john/CloudStation/School/Research/fmri/aim1/derivatives/pymvpa:/outputs \
bids/pymvpa \
--skip_bids_validator \
/data /outputs participant_test -k ao $*
</code></pre>
<p dir="auto">Which produced deprecation warnings and the following error:</p>
<pre><code>WARNING: Detected incorrect (nan) scl_ fields. Resetting to scl_slope=1.0 and scl_inter=0.0
* Please note: warnings are printed only once, but underlying problem might occur many times *
Traceback (most recent call last):
File "/code/run.py", line 281, in <module>
fds.sa['chnks'] = chunks_labels # we call this sample attribute 'chnks' so later it won't be mistaken for
File "/usr/lib/python2.7/dist-packages/mvpa2/base/collections.py", line 599, in __setitem__
str(self)))
ValueError: Collectable 'chnks' with length [2856] does not match the required length [952] of collection '<SampleAttributesCollection: time_coords,time_indices>'.
</code></pre>
<p dir="auto">I would greatly appreciate any help or pointers to online info.</p>
<p dir="auto">John T. Johnson<br>
PhD Candidate - Cognitive Motor Control Laboratory<br>
Lab TA NEURO 4001 Capstone<br>
School of Biological Sciences<br>
Georgia Institute of Technology</p>
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