[pymvpa] saving searchlight map in 0.4.4

[Sergey.V.Fogelson at Dartmouth.edu]

Hello,

I keep getting an error when I attempt to save the searchlight map  
after having generated it. The debugger gets through to 100% and then  
issues the following error:

[SLC] DBG:  Doing 24186 spheres: 24186 (22 features) [100%]
Traceback (most recent call last):
   File "searchlight3.py", line 31, in <module>
     orig_s1_map = dataset.mapReverse(N.array(s1_map))
   File "/usr/lib/pymodules/python2.6/mvpa/datasets/mapped.py", line  
97, in mapReverse
     return self.mapper.reverse(data)
   File "/usr/lib/pymodules/python2.6/mvpa/mappers/mask.py", line 163,  
in reverse
     dtype=data.dtype)
MemoryError

Here's the code snippet for saving the map ive been using that worked  
in earlier versions:

####################
s1_map = s1(dataset)
orig_s1_map = dataset.mapReverse(N.array(s1_map))
data_hdr = dataset.niftihdr
NiftiImage(orig_s1_map,header=data_hdr).save('9mmSL_test.nii.gz')
####################

thanks,
Sergey.