EC STAT - Extract Connected Clusters - Statistics

PURPOSE

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.

SEE ALSO

EC SELECT	[Extract Connected Clusters - Selection]
EC CLOSE	[Extract Connected Clusters - merge close clusters]
EC FILTER	[Extract Connected Clusters - Filter]
EC CL	[Extract Connected Clusters]

USAGE

.OPERATION: EC STAT

.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

1. 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.)

SUBROUTINES

IMSTAT, MAPSTAT

CALLER

UTIL6