Vincent J. Troisi wrote:
Ryan Ollerenshaw wrote:
I am having a bit of trouble figuring out the extent I should use to
display the entire northern hemisphere using the Polar Stereographic
projection. The best that i have been able to come up with is:
EXTENT 3000 2000 4000000 3000000
but this only displays the right half of the norther hemisphere, how
can i display the full 360 degrees of the northern hemisphere all at
one time? When using a polar projection i am not sure what the
extent numbers actually represent. They cant be corner points
because the display should be a circle, so what are they offsets
from? Any clarity that someone can provide on how to use polar
projection would be very helpful. Thanks.
PROJECTION "proj=stere"
"lat_ts=75"
"north"
"lat_0=90"
END
We've been successful with
-9036842.762, -9036842.762, 9036842.762, 9036842.762
when i try this extent i get a white circle that takes up most of the
screen and i can only see a very small piece of my data in a half moon
shape on the right edge of my window. Is anyone able to explain what
the extent numbers actually mean when using a polar projection? Why am
i getting a large white circle with my data wrapped around, and how do i
decrees the size of this central circle to zero so my pole comes
together to a single point?
