Loading firstlevel zmaps into a dataobj using fmri data

[SebastianSpeer]

Dear Canlab,

I'm trying to load firstlevel zmaps into a canlab dataobj to use the multivariate prediction tools.

When using:

maps = dir('/data04/Sebastian/RewardSignature/analysis/Results/Univariate/Firstlevel/HR-won/concat/*res*.gz') data_obj = fmri_data(maps);

I'm getting the following error:

Reference to non-existent field 'volInfo'.

Error in fmri_data (line 442)
obj.mask.volInfo = obj2.volInfo;

when checking the header of my zmaps there is information on the pixel dimensions as well as the dimensions of the data.

the fmri_data() call works fine when running on prerocessed data. So the issue seems to be specific to loading statistical maps.

Is it possible at all to load these maps into a dataobj?

Thanks for your help,

Sebastian

[torwager]

Hi Sebastian, This should indeed be possible and straightforward. Your “maps” variable should contain a string matrix or cell array of strings with valid file names to 3-D or 4-D images (.gz should be OK). The problem may be in the list of input file names. Best, Tor

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On Oct 11, 2021, at 12:00 PM, SebastianSpeer ***@***.***> wrote: Dear Canlab, I'm trying to load firstlevel zmaps into a canlab dataobj to use the multivariate prediction tools. When using: maps = dir('/data04/Sebastian/RewardSignature/analysis/Results/Univariate/Firstlevel/HR-won/concat/*res*.gz') data_obj = fmri_data(maps); I'm getting the following error: Reference to non-existent field 'volInfo'. Error in fmri_data (line 442) obj.mask.volInfo = obj2.volInfo; when checking the header of my zmaps there is information on the pixel dimensions as well as the dimensions of the data. the fmri_data() call works fine when running on prerocessed data. So the issue seems to be specific to loading statistical maps. Is it possible at all to load these maps into a dataobj? Thanks for your help, Sebastian — You are receiving this because you are subscribed to this thread. Reply to this email directly, view it on GitHub <#42>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/ABPY7LDKQXL7OV7I66SJHW3UGMCZ3ANCNFSM5FYSA56Q>. Triage notifications on the go with GitHub Mobile for iOS <https://apps.apple.com/app/apple-store/id1477376905?ct=notification-email&mt=8&pt=524675> or Android <https://play.google.com/store/apps/details?id=com.github.android&referrer=utm_campaign%3Dnotification-email%26utm_medium%3Demail%26utm_source%3Dgithub>.