Usage: 3dMean [options] dset dset ... Takes the voxel-by-voxel mean of all input datasets; the main reason is to be faster than 3dcalc.
Options [see 3dcalc -help for more details on these]:
-verbose = Print out some information along the way.
-prefix ppp = Sets the prefix of the output dataset.
-datum ddd = Sets the datum of the output dataset.
-fscale = Force scaling of the output to the maximum integer range.
- -gscale = Same as ‘-fscale’, but also forces each output sub-brick to
- to get the same scaling factor.
- -nscale = Don’t do any scaling on output to byte or short datasets.
- ** Only use this option if you are sure you
- want the output dataset to be integer-valued!
-non_zero = Use only non-zero values for calculation of mean or squares
-sd OR = Calculate the standard deviation (variance/n-1) instead
-stdev of the mean (cannot be used with -sqr, -sum or -non_zero).
-sqr = Average the squares, instead of the values. -sum = Just take the sum (don’t divide by number of datasets).
-count = compute only the count of non-zero voxels.
-mask_inter = Create a simple intersection mask.
-mask_union = Create a simple union mask.
The masks will be set by any non-zero voxels in the input datasets.
each axis (x,y,z,t).
At least 2 input datasets are required.
Dataset sub-brick selectors [] are allowed.
first input dataset.
++ Compile date = Dec 16 2015