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June 12, 2014 at 5:13 pm #1691Leonardo FridKeymaster
Question from a model user:
I’m interested in running a scenario in ST-Sim where I have a polygon where development will occur. How exactly would I set that up? Would I import a planning zone file? Would I import the transition spatial multiplier file?
Also, I do not want the "development" transition to occur anywhere except in the cells falling within the development polygon – so how do I add that transition? Would I create a "development" transition pathway for all states (where "to class" = "developed") and give it a probability of 0?
- Under "Project Definitions | Transition Types" create a "Development" transition type.
- Under “Project Definitions | Transition Groups” create a “Development” transition group.
- Under “Project Definitions | Transition Types by Group” add a record for the development type and group. Set the "Primary" field to "Yes".
- Create pathways for development transitions for each state class in your model. You will need to add a “developed” state class if you have not already done so. The probability for these pathways should be greater than zero.
- Create a development spatial multiplier raster GeoTIFF file. This is a single band floating point GoeTIFF raster that overlays exactly with your spatial initial condition raster files. Each cell where development is allowed should have a value of 1. Each cell where development is not allowed should have a value of 0. Note that you can actually use values other than zero or 1 if you want development to be more probable for some cells than others.
- Load the file into ST-Sim using the “Advanced | Transitions Spatial | Spatial Multipliers” property.
- To determine how much development happens each timestep you can use area targets or transition multipliers.
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