YSL,
Two other options to try:
1) Select the palette PSYCH rather than PSYCH-NO-NONE, which differs only in
how near-zero is handled.
2) Click on a node in the blue patch in question, and use the ID Window to
determine what the actual metric value(s) are for those nodes in the metric
column i
It is puzzling -- especially since display mode is set to positive.
Two things come to mind:
* Make sure you don't have any paint or other type of underlays turned
on (besides the metric) on the D/C: Overlay/Underlay - surface menu.
* Try turning the User scale to auto. You have the threshold
