height plot topography

In the attached plot, why do the data points get obscured by white
space? Is there any way to modify this, because I know that there is
surface data that can be plotted. I've copied my code below. Thanks.

-Dan

_______________________________________________
ncl-talk mailing list
ncl-talk_at_ucar.edu
http://mailman.ucar.edu/mailman/listinfo/ncl-talk