Difference between revisions of "Comparative Analysis of Cost Path Analysis In Grass GIS and ArcMap"
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==Process== |
==Process== |
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Open ArcMap and create a new map layout. |
Open ArcMap and create a new map layout. |
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The following data files used are: |
The following data files used are: |
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*<b>1.</b> littlered.shp - The start location of little red. |
*<b>1.</b> littlered.shp - The start location of little red. |
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*<b>2.</b> gramma.shp - End location Gramma's cottage. |
*<b>2.</b> gramma.shp - End location Gramma's cottage. |
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| − | *<b>3.</b> landcover.shp - The |
+ | *<b>3.</b> landcover.shp - The land cover types present. |
*<b>4.</b> elevation.shp - Elevation points for the area. |
*<b>4.</b> elevation.shp - Elevation points for the area. |
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| − | *<b>5.</b> AOI.shp - Area of interest that defines study area. |
+ | *<b>5.</b> AOI.shp - Area of interest polygon that defines study area. |
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| + | Add all of the above layers to the data frame. |
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| + | |||
| + | '''Interpolation''' |
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| + | In order to obtain the slope factor we first need to create a Digital Elevation Model (DEM) from our elevation points. |
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| + | |||
| + | 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. |
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| + | |||
| + | ArcToolBox/SpatialAnaylstTools/interpolation/IDW |
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=GRASS GIS= |
=GRASS GIS= |
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Revision as of 14:42, 19 December 2013
Contents
Introduction
About The Tutorial
Intro to GRASS GIS
ArcMap
About ArcMap
Process
Open ArcMap and create a new map layout.
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
