what is the diagram of the Arlington National Cemetry??  when you look
at the head stones it appears they are all straight in line from
several different views (angles) ..   how do they do that????  is this
design efficient???

They're just in a rectangular grid. Any rectangular grid exhibits the
straight-line phenomenon you're talking about. Check out this 3D
example in Java. Click it to change the view.
http://www.xs4all.nl/~elout/2000/08/java/index_bezup.html

Remember that there are caskets underneath, so any arrangement other
than rectangular would waste more space.

so how would i use it if i have 10 hectare of a crop ??? if i want to
see the same effect???

Webinfo,
plant in straight lines at the same distance from each other and at
the same interval,  i.e., on straight lines at equidistance from each
other that run at a 90 degree angle to the the first set of lines.

Just assuming that your 10 hectares is a field 200 x 500 meters, use
rows of 1 meter along each side  - or they could be two meters on one
side and just one meter on the other side.

Not a good way to plant grains or sugar beets ...
Myoarin