3D

[John Isaacson]

I would suggest setting your region to the limits of your elevation file.
Then run the program and check the resolution to see if it is excessively
large. The trade off is between the resolution size and the time it takes
to run the display. high resolution ie: 10 or 5, can produce thousands of 
lines which can take along time to run. So, I usually set the resolution to
about 100 for the first time and run the program to see if most of the 
elevation layer is displayed. Then you can mess around with the 
view parameters to get the view you want. When you have a view you like,
then change the resolution to a smaller unit size ie a higher resolution, and 
run it again to get a nice three dimensional map.  

Some of the parameters have a big influence on how the map looks in three 
dimensions. The verticle exaggeration will make a big difference I usually
start at about 4 on maps with moderate relief. also the angel of view above
the surface has a great influence on the map.  You just have to fool around
with it until you get something you like. I prefer the lines only display in color which seems to really set off the three dimensional properties of the 
elevation map nicely.