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[udig-devel] Re: [Repast-interest] Network how-to
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Hi
We seem to be working on the same problem, we have developed a road
charging model, for the recently announced extension to the UK's road
charging scheme, together with several ANN models (Joone) for port
capacity analysis, and associated IT sizing plus capacity models, using
agents moving through the UK road network connected to a GIS, in this
case uDIG. The uDig project is closely associated with GeoTools which
is a component of Repast.
Although the task sounds easy in practice various difficulties have to
be overcome, In our case we embedded Repast into uDig and extended uDig
with Repast's controls and plots, plus some extended recording devices,
all fairly basic stuff given some Eclipse platform knowledge, the real
difficulty came in the GIS display. The rendering mechanisms of GIS
systems are chosen for memory / rendering accuracy tradeoffs, whereas
simulation tradeoffs are frame rates etc. (simplified), we overcame this
by extending uDigs "layer's" with "overlays", which though derived from
uDigs layer code have a different Geotools rendering component optimized
for simulation.
The rather large data streams generated by this simulation were
controlled by a data stream management system see Stanford univ. Stream
package and the PIPES stream processing package from
Research Group Database Systems
<http://dbs.mathematik.uni-marburg.de>, Prof. Dr. B. Seeger
<http://dbs.mathematik.uni-marburg.de/Home/People/Professor>,
Hans-Meerwein-Straße
<http://www.mathematik.uni-marburg.de/%7Edinklage/Wegbesch.html>,
Lahnberge <http://www.uni-marburg.de/ZAS/ki/12/12ab_adr.html>
Department <http://www.mathematik.uni-marburg.de/> of Mathematics
<http://www.mathematik.uni-marburg.de/forschung/arbeitsgebiete_mathe/index.php>
and Computer Science
<http://www.mathematik.uni-marburg.de/forschung/arbeitsgebiete_info/index.php>,
Philipps-University <http://www.uni-marburg.de/>
developed as a uDig plugin allowing the selection of interesting for
display / analysis data by SQL statements.
It's our intention to return this code to the uDig and Repast projects
but like you we cannot find any place for Repast code, hope this points
towards some possiblities to advance your project.
Regards
Susan Black ( in Tony Kennedy's absence)
Suneet Kamath wrote:
Having gone through the list archives I've found many people trying to
do things that I'm trying to do. I was wondering if anyone may have
code that does something similar -
I want to show agents (vehicles) moving through a transport (street)
network that is ultimately connected to a GIS package. Easy enough as
it sounds and with some Java experience I can't get this done.
Any ideas?
Thanks
Suneet
PS - Why do we not have code archives where people upload modules or
examples developed. Or is there one and I have not found it
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