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left-click: re-sample current scan to fsaverage
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middle-click: re-sample to opp hemi (IN PROG)
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shift-middle-click: re-samp to another subject
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Detailed Description of Label "fsavg" Actions

The "fsavg" checkbutton is only present on the
single-subject View Functional Data panel (not on
the View SphereAvg Data panel).

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Left-click
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Left-clicking the "fsavg" checkbutton at the top
right before clicking SURFACE-STATS will cause
the current paintfile (and optionally the
statmask paintfile) to be resampled onto the
icosahedral fsaverage surface (resampled
paintfiles will have an "fsavg-" prefix), and
then displayed on one of those surfaces.

This is one-time operation (checkbutton
auto-unclicks itself after each SURFACE-STATS
use).  To display on an fsaverage surface or
patch type not present in dropdown for current
subject (e.g., inflated_avg) type into "surface:"
or "patch:" entry and hit <Return>.

Note that the re-sampled *.w files *cannot* be
directly re-displayed on the current subject.  To
re-use them (e.g., to save rendering parameters
for them), move/copy the re-sampled *.w files
into a new scandir within a new Functional scan
session that is set up to display on subject
fsaverage.  For example:

  File -> New Functional
    [create new empty session dir]
    [link session dir to subject fsaverage]
  cd $newsession/image
  mkdir marty2fsavg-scan1
  [copy resampled *.w files into there]
  SessionTools -> Setup Align/Funct
    [click FUnct Scan Dir]
    [just Save/Close -- leave entries blank]
  SessionTools -> View Functional Data
    [clicke Render Stats Dir]
    [set up display parameters]
    [SURFACE-STATS]

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Middle-click (alternate)
-------------------------------------------

IN PROG: resample to opp hemi
IN PROG: resample to opp hemi

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Shift-middle-click (alternate2)
-------------------------------------------

Shift-middle-clicking the "fsavg" checkbutton
before clicking SURFACE-STATS works like a left
click, except that a second re-sampling is
performed:

  current subject -> fsaverage -> another subject

This will pop up a small panel to allow selecting
another subject in the current SUBJECTS_DIR onto
which to sample the data.

Note that the re-re-sampled files *cannot* be
directly re-displayed on the current subject.  To
re-use them (e.g., to save rendering parameters
for them), move/copy the re-sampled *.w files
into a new scandir within a new Functional scan
session that is set up to display on the subject
that the files were resampled to.  For example:

  File -> New Functional
    [create new session dir]
    [link session dir to subject claudia]
  cd $newsession/image
  mkdir marty2claudia-scan1
  [copy resampled *.w files into there]
  SessionTools -> Setup Align/Funct
    [click FUnct Scan Dir]
    [just Save/Close -- leave entries blank]
  SessionTools -> View Functional Data
    [clicke Render Stats Dir]
    [set up display parameters]
    [SURFACE-STATS]
