Table of Contents
- Tracking Creatures of Bavarian Folklore Using a Least-Cost Path Model
- Setting up Your Workspace
- Preparing the Data
- Skill Drill: Geocoding an Address and Creating a CSV Table to Import As XY Data
- Skill Drill: Defining the Study Area
- Skill Drill: Acquire Elevation Data from the USGS National Map Viewer
- Skill Drill: Acquire Land Cover Data from the USGS National Map Viewer
- Skill Drill: Acquire Hydrography Data from the USGS National Map Viewer
- Changing Global Environment Settings for
- Creating Cost Surface Models Using a Relative Cost Scale
- Creating a Remap Table to Reclassify Elevation
- Skill Drill: Creating a Remap Table to Reclassify Slope
- Skill Drill: Creating a Remap Table to Reclassify Tree Canopy Density
- Converting the Hydrography Features to Cost Surface Models
- Creating a Total Cost Surface Model
- Creating a Cost-Distance Surface Model
- Creating a Migration Corridor
- Determining the Least-Cost Path
- Skill Drill: Creating a Map of the Results
Skill Drill: Creating a Remap Table to Reclassify Slope
Your next cost raster will be based on slope. The wolpertinger prefers to travel over steep slopes to avoid predators and to make use of tendency to fly short distances. Start by creating a slope raster, using degrees as the output measurement. Then use the following values to create a remap table to reclassify the slope raster.
- A value of 1 for slopes greater the 35 degrees
- A value of 2 for slopes between 30 to 35 degrees
- A value of 4 for slopes between 25 to 30 degrees
- A value of 6 for slopes between 20 to 25 degrees
- A value of 8 for slopes between 10 to 20 degrees
- A value of 9 for slopes between 5 to 10 degrees
- A value of 10 for slopes between 0 to 5 degrees
Be sure your remap table captures the upper and lower values of the slope raster. In this example, the slopes range from 0 to 75.4372101 degrees.
Once the remap table has been created and saved as a CSV file, close Microsoft Excel and launch the Reclassify tool. Load the slope remap table using the same methods you used for reclassifying the digital elevation model.
The slope layer has now been reclassified using the remap table. This layer now represents the relative cost or likelihood, on a scale of 1 through 10, that this species will traverse each pixel based on the steepness of the slope.