Brain Imaging & Analysis Center

usage: -expr flood flag value range fillvalue datamask

The FLAG argument controls options.  Combine options by adding values.

FLAG values:
          0 - use current cursor location as seed loc. (default)
          1 - use origin (0,0,0) of region as seed loc.
          2 - use center of region as seed loc.
          4 - start at seed, then find nearest VALUE (or VALUE-RANGE) voxel
        010 - Binary: treat VALUE and RANGE as bit values
        020 - assume a 2-bit mask; otherwise 1 bit
        040 - use highest data bit(s) as mask (default is lowest)
       0100 - Inverse: flood values that DON'T match VAL/RANGE
       0200 - RANGE value is relative to neighbor (+- RANGE intensity)
       0400 - RANGE value is % relative to neighbor (+- RANGE %)
      01000 - don't include edges (voxels touching outside voxels)
      02000 - set edge voxels to FILL_EDGE value (2)
      04000 - only flood in the seed plane (default is 3-D volume)

Values to flood depend on FLAG, VALUE, & RANGE.
If (FLAG & BINARY):
      VALUE:  value to flood
      RANGE:  mask of bits to consider when looking for VAL

Otherwise:
      VALUE:  threshold value (default = 1) 
      RANGE: > 0, neighbors must be within RANGE % of VALUE to be filled
             < 0, neighbors must be within -RANGE of VALUE to be filled
             = 0, neighbors must match VALUE to be filled

Values being flooded will be replaced with the original value, masked by
DATAMASK and OR'd with FILLVALUE.
If FILLVALUE was not specified, it will be set to:

If DATAMASK was not specified, it will be set to:


For binary masked data:
      data bit 0 (1's) - ON/OFF
      data bit 1 (2's) - FILLED/not FILLED (or INTERIOR/not INTERIOR)
      data bit 2 (4's) - EDGE/not EDGE


      ROINUM - if this is a BLOCK ROI, filling is only done within the ROI
      SEEDLOC - XYZ location from which to start filling
                If SEEDLOC == 0, the seed locations is determined by the FLAG value 
      T0 - which volume to use (if nt > 1)

See Also:
fScan Home, fScan Manual, CmdLineOptions, Expression Command, Manual Help