Check out MS Mapcruncher On Sep 23, 2:45 pm, Aaron Kreider <[email protected]> wrote: > I want to create a custom tile layer for the continental US that shows > the impact of power plants (ex. coal). > > So I'm going to calculate a value for each grid area (probably using > php - since that is my skill set). I'm going to develop a formula > based on power plant output in MWs and distance from the power plant > to the center point of the grid. > > Then I'll have a table with the corners of each grid area, and an > impact value. How would I convert this into a custom tile layer? > > I'd like to do a heat map. > If possible, I'd also like opacity. > > The one tool I found is a converter from shapefiles to > tiles:http://www.casa.ucl.ac.uk/software/gmapcreator.asp > > I don't have ArcGis or any other commercial GIS tools. I'm looking for > a free solution.
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