using python with arcgis. purpose evacuations sometimes necessary flooding, chemical spill, fire ...
TRANSCRIPT
EVACUATION PLANNING OF EAU CLAIRE COUNTY
Using Python with ArcGIS
Purpose
Evacuations sometimes necessary Flooding, chemical spill, fire
Zone populations, shelter capacities vary
Shelter selection not always obvious Hazards on roads change routes
Process
Environment Data Road Network, Shelter Data, Zone Data,
Incident Coverage, Etc. Drive times
Drive time from each zone center to each shelter
Simplex Method Route Information
Previously started by Brian Troy
Environment
Before (Buffer)
Before (Zones)
Before (Shelters)
Before (Then what?)
Results: a specialized OD Cost Matrix with routes (Eventually!)
Sent into separate program to determine best shelter usage (Simplex)
Program - Concept
Python Script
Input Parameters
Output Routes
Program - Interface
Program – Code Samples
Program – Code Samples Problem: OD Cost Matrix Format
Name = Source - Destination
Program – Results
Program – Results
Once generated, easy to use for other purposes
Program – Results
So, what’s the difference? No data preparation Previous model took 5-25-??? minutes to
run Current program takes 30-60 seconds to
do the same thing Data Accessibility/Flexibility