At the same time, a modeling study undertaking in GIS supplies a basis for simplification of the interaction between the different users involved through the establishment of a common data structure that can be visualized using the same GIS-based system.
We constructed models using the same seven bioclimatic data layers as well as 1-km resolution raster GIS data layers summarizing slope and aspect [52].
These sites were not used in OP and PM model development, but did have the same GIS predictor variables available.
LUR models were then used to estimate annual average air pollution concentrations at the participants' addresses, for which the same GIS predictor variables were collected.
This system will be built on the same GIS platform as the web service described in this paper.
GIS displays are available in both 2D and 3D implementations, both of which may use the same underlying geography projection.
Iso-concentration maps were constructed using the Arc GIS software.
Maps were generated using the Quantum GIS mapping software (http://qgis.org).org
