;+
; Set the value of !g.frozen to 0.  If !g.has_display is false, then
; this does not change the value of !g.frozen (which should be 1
; unless the user has changed it by hand).
;
; This value is used in various places to see if the plotter should
; update its view of the 0 element in the global data array (e.g.
; get, kget, various operations).
;
; @version $Id: unfreeze.pro,v 1.6 2005/04/14 14:43:52 bgarwood Exp $
;-
pro unfreeze
    if not !g.has_display then return

    !g.frozen = 0
    setplotterautoupdate
return
end