part seven: using spatial analysis. traditional gis approach to a spatial problem gisdata input data...
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Part Seven: Using Spatial Analysis
Traditional GIS Approach to a Spatial Problem
GISData Input
Data Manipulation
Data Visualization
Data Analysis
Confirmatory
Exploratory
Problem….Idea(Data collection)
Hypothesis
All things Being Equal….
The Concept of Distance Decay
Closer two objects are…..more likely to be interacting.
Therefore, the center of several objects, likely to be a common influence
Several ways to do this in the GIS
One is Kernel Density Analysis,Similar approach to theAnthrax example
3.142*10000 = 31420
Square kms = 1000*1000 = 1000000
1 / 31420 = 0.0000318
To express as square kms * by 1000000 = 31.83
3.142*10000 = 31420
Square kms = 1000*1000 = 1000000
1 / 31420 = 0.0000318
To express as square kms * by 1000000 = 31.83
N/area
R 2
The areas that are “lightest” haveThe greatest concentration of “events”Such as disease cases.
The areas that are “lightest” haveThe greatest concentration of “events”Such as disease cases.
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