Difference between revisions of "Comparative Analysis of Cost Path Analysis In Grass GIS and ArcMap"
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==About ArcMap== |
==About ArcMap== |
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==Setup and Data== |
==Setup and Data== |
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| − | Open ArcMap and create a new map layout. |
+ | Open ArcMap and create a new map layout, making sure to set the workspace to known folders. |
The following data files used are: |
The following data files used are: |
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Revision as of 14:46, 19 December 2013
Contents
Introduction
About The Tutorial
Intro to GRASS GIS
ArcMap
About ArcMap
Setup and Data
Open ArcMap and create a new map layout, making sure to set the workspace to known folders.
The following data files used are:
- 1. littlered.shp - The start location of little red.
- 2. gramma.shp - End location Gramma's cottage.
- 3. landcover.shp - The land cover types present.
- 4. elevation.shp - Elevation points for the area.
- 5. AOI.shp - Area of interest polygon that defines study area.
Add all of the above layers to the data frame.
Interpolation
In order to obtain the slope factor we first need to create a Digital Elevation Model (DEM) from our elevation points.
The DEM will be interpolated using the Inverse Distance Weighting (IDW)method and will be created with 500 m resolution. This is obtained with ArcMap's IDW tool.
ArcToolBox/SpatialAnaylstTools/interpolation/IDW
GRASS GIS
About GRASS
Geographic Resources Analysis Support System
