Re: Projection Scale constraints.

Good Morning Chris,

        You might not need to pre-process your data into multiple levels of
detail. I routinely load 300MB of gray scale imagery (of Venus, Mars or
the Moon) into OpenMap. I get the data in 8MB files and make an
OMRaster for each file. Using an affine transform to rescale the data,
I almost always pan or zoom in under 150 milliseconds, often half of
that.
        When I started, I figured I would have to create multiple levels of
detail, but happily found with Java's performace, I didn't have to
bother.
        If you need to do any image processing on your data, check out the Java
Advanced Imaging stuff. It makes it pretty easy (but is not yet
available on a Mac).

        If anyone is interested in looking at planetary data, my stuff is open
source. Details of the project are available at:
http://www.tufts.edu/as/wright_center/geo_virgil/
and a little more at
http://www.siliconspaceships.com/GeoVirgil/

Steve McDonald

--
[To unsubscribe to this list send an email to "majdart@bbn.com"
with the following text in the BODY of the message "unsubscribe openmap-users"]