!========================================
def viewport/XLIMITS=0,1/YLIMITS=0,1 full2
set viewport full2

POLYGON/nolab/noaxes/fill/pal=gray {0,0,1,1,0},{0,1,1,0,0}

!========================================
set viewport full

use levitus_climatology
shade temp[k=1]

!========================================
frame/file=err608_shade_viewport_mode_gif_1.gif

!XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX

!========================================
def viewport/XLIMITS=0,1/YLIMITS=0,1 full2
set viewport full2

POLYGON/nolab/noaxes/fill/pal=gray {0,0,1,1,0},{0,1,1,0,0}

!========================================
set viewport full

use levitus_climatology
shade temp[k=1], x[g=temp], y[g=temp]

frame/file=err608_shade_viewport_mode_gif_2.gif