Finds number of occurances of each integral intensity in a
SPIDER 3D file as well as center mass of each intensity value.
Creates a SPIDER document file for statistics output
containing intensity value; number of voxels with this
intensity;
This operation is normally used on the output volume from
the 'EC' operation. It is meaningless with volumes having
negative or non-integral voxel values.
.CLUSTER INPUT FILE: VVV001
[Name of an existing cluster volume. This is the normally
a file created by 'EC CL'].
.DOCUMENT FILE: DOC001
[Name of output document file.]
NOTES
In the document file the key is the voxel value + 1. This
is followed by then number of voxels having that value;
X,Y & Z center of mass for that voxel value; and number of
slices which contain that voxel value.
(The cluster number is incremented by one because zero index
is not allowed and it is usefull to have a measure of the
background which has value zero in the file.)