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--- jvs:fscan:manual:chapter2:expression:segment [2021/01/25 19:42]
voyvodic
+++ jvs:fscan:manual:chapter2:expression:segment [2023/02/23 18:43] (current)
@@ Line 1: / Line 1: @@
 **fScan Reference Manual, Chapter 2 (CmdLineOptions:Expr): segment**
 ===== segment -- Assign contiguous voxels with similar values to different clusters =====
- **usage:  -expr segment [value flag]**\\
+ **usage:  -expr segment [flag value]**\\
 The SEGMENT command process a 3-D image map looking for voxel values greater than or equal to VALUE.  Each time it finds such a voxel it uses a variation of the [[jvs:fscan:manual:chapter2:expression:flood|flood]] function to find all other voxels greater than VALUE contiguous with the first, and assigns all those values a new "cluster" number.  Clusters can have as few as 1 voxel. Cluster values start at 1, and increase by 1 for each new cluster found.
@@ Line 9: / Line 9: @@
 FLAG:\\
 - default\\
-- look for negative voxel values, less than or equal to -VALUE
+- also look for negative voxel values, less than or equal to -VALUE (default is just positive)
 **See Also:**\\

Brain Imaging & Analysis Center