This week we ran both vector and raster suitability analyses in ArcGIS Pro.
For Scenario 1, we were tasked with identifying suitable Mountain
Lion habitat based on slope, landcover, and distance from rivers and highways.
To do this we created slope and landcover Boolean grids as well as highway and
river buffers. We ran the same data 2 different times to practice working with
both raster and vector tools and methods of analysis. We combined our layers
and assessed what polygons fit our suitability requirements.
For Scenario 2 we were given a study area and data and tasked with identifying how much land in the area was suitable for development. While the output of the prior exercise was just the polygons suitable for habitat, for this exercise we used a suitability rating. We reclassified our Land Cover classes based on suitability rating with agricultural and grassland landcover being most suitable for development and water, wetlands and urban areas classified as least suitable. We also gave suitability ratings to the soil class, slope and created buffers around the rivers and roads. After reclassifying our rasters, we used the Weighted Overlay tool to give weight to each class. We ran two scenarios, one with equal weight and an alternative scenario with more weight given to certain classes (slope) and less given to others (distance to roads). The weighted overlay tool gave me issues before I realized that it wasn’t keeping the suitability ratings I gave to my raster and was instead trying to reclassify them for an unknown reason.
No comments:
Post a Comment