[pymvpa] 3D images with NiftiDataset?
Dylan David Wagner
dylan.d.wagner at Dartmouth.EDU
Thu Sep 18 18:03:36 UTC 2008
Michael and Yaroslav,
Cheers for the help guys, works great (both methods). Spent some time
with the PyNifti docstring, finally get what a NiftiImage object is.
Anyhow, to sum up:
dataset = NiftiDataset(samples=NiftiImage(N.array( [
NiftiImage(i).asarray() for i in subjects] ),
where subjects contains a list of filenames... Worked great, mask
applies no problems.
Yaroslav suggest something like this (apologize if my python is the
suck. only been using it for a day):
image = N.array( NiftiImage(subjects).asarray())
image = image[N.newaxis, :]
Then I can just loop through all subjects and build up a dataset
(dataset = dataset + NiftiDataset(blah blah blah)
<cheers to James Hughes for showing me how to do that!>.
Tried it out and the dataset is the same as Michael's method. Though a
bit longer to code. Cheers for the help! Forced me to spend more time
learning basic python just to understand what it was exactly you guys
> Anything that the manual refers to is part of the source tarball (look
> into data/). The manual and the examples are part of the test battery of
> PyMVPA, ie. they are checked if they still do what they should, whenever
> PyMVPA itself is tested. The whole testsuite is self-contained (tests +
> data) and is part of the source tarball.
Ahh I see, I was looking for the Data and Doc directories in the binary
release. Grabbing the source now. Thanks.
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