Applications Week 6 Part 1: Suitability Analysis

In this part of the lab, we analyzed the study area for its suitability for property development using two different weighting strategies. I reclassified each of the five raster layers (land cover, soils, slope, river, and roads) with a suitability rating from 1 to 5, with 5 being the most suitable for property development. The most suitable areas were meadow or grassland, soil class 0, had a slope less than 2 degrees, were more than 1000 feet from a river, and less than 1320 feet from a road. Then, using the Weighted Overlay tool, I combined the five reclassified rasters into one raster with a suitability rating for each cell. A cell with a suitability value of 5 is the most suitable for development in all five categories. First I created a raster that weighted each layer equally, then I created one with the weights seen below. Neither raster had any cells with a suitability value of 1. The raster with equal weights had very similar areas for ratings 3 and 4, while the alternative raster had the most area with rating 3. The alternatively weighted raster also had larger (but still similarly sized) areas with values 2 and 5 compared to the equally weighted raster.


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