Jimmy Shen

I never have such a function called "read_nii_img". Please read all functions and usages from:

http://www.rotman-baycrest.on.ca/~jimmy/NIfTI

NIfTI supports both ".nii" and ".img/.hdr" file extension. If you do not provide any file extension, it will look for ".img/.hdr" files by default. Therefore, you can easily solve your problem by provide appropriate file extension. e.g. nii = load_nii('filtered_func_data.nii');

I assume that you have a series of 3D NIfTI (or Analyze) files with the same header information (i.e. same dimension, voxel size, originator, ... etc.), and you want to integrate it into a single 4D file with time series in the file.

If this is the case, you can use my "collapse_nii_scan.m" to do so. Type help collapse_nii_scan to get more information.

For file extension, this function will follow whatever you have. i.e. you will still get a single .hdr/.img file afterwards.

Since all NIfTI compatible software should be able to load a 4D NIfTI (or Analyze) file, we do not support any conversion from .hdr/img to .nii file.

I've found recently, now that we have upgraded to Matlab 2011a, that many of these functions no longer work properly. When using read_nii_img we are now getting an error saying:

??? Undefined function or method 'read_nii_img' for input arguments of type 'char'

We had successfully run these programs before, but since the update they have not been working. Do you have any suggestions to perhaps work around this? Thanks much!

Hi,

using 'load_nii_hdr' within 'load_untouch_nii' I get the following error message:

??? Error using ==> load_nii_hdr
Too many output arguments.

Error in ==> load_untouch_nii at 103
[nii.hdr,nii.filetype,nii.fileprefix,nii.machine] = load_nii_hdr(filename);

Error in ==> apply_fsl_transformation_matrix at 5
vox = load_untouch_nii('/SCR2/DTI/det_track/BM3K/trans/Sem_fun_roi.nii');

Thanks for your help!

Michael