changing a .mat file for SPM batch process
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I am trying to change SPM preprocessing parameters stored in a .mat file. I've figured out MATLAB doesn't seem to allow changing the values within the cell (it gave me strange errors indicating that the entire file no longer existed when I tried to change them). What would be the easiest way to edit these variables?
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Walter Roberson
2013-9-19
If you are trying to change just one variable within a .mat that contains many variables, then one route is to use the -append flag at the time you save the revised variable: http://www.mathworks.com/help/matlab/ref/save.html
Note that this will cause the .mat file to get longer; the old variables will not get deleted when you use -append, they will just not be used.
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Walter Roberson
2013-9-20
If you use save -append, then the entire variable is replaced; it does not append on to the end of a variable, and you cannot just replace one cell in the variable.
If you use matfile then what you can change is more flexible.
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