glob.change: glob.change
In colinr23/stampr: Spatial Temporal Analysis of Moving Polygons
Description
Usage
Arguments
Details
Value
Description
The function glob.change computes a set of three global change metrics for comparison
between two polygon sets. These metrics are outlined in Robertson et al. (2007; Table 4).
Usage
1
glob.change(T1, T2)
Arguments
T1
a SpatialPolygonsDataFrame object of polygons from time 1.
T2
a SpatialPolygonsDataFrame object of polygons from time 2.
Details
glob.change computes three change metrics, detailed below, that can be used to quantify changes
between two polygon sets:
NumRatio – ratio between the number of polygons in T2 and T1;
NumRatio=#T1/#T2
AreaRatio – ratio between the areas of polygons in T2 and T1;
AreaRatio=A(T1)/A(T2)
AvgAreaRatio – ratio between the AreaRatio and NumRatio;
AvgAreaRatio=AreaRatio/NumRatio
Value
A list object with three elements - Results for the NumRatio, AreaRatio, and AvgAreaRatio metrics.
colinr23/stampr documentation built on May 13, 2019, 9:54 p.m.
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Description Usage Arguments Details Value
Description
The function glob.change computes a set of three global change metrics for comparison
between two polygon sets. These metrics are outlined in Robertson et al. (2007; Table 4).
Usage
1 | glob.change(T1, T2)
|
Arguments
T1 |
a |
T2 |
a |
Details
glob.change computes three change metrics, detailed below, that can be used to quantify changes
between two polygon sets:
NumRatio – ratio between the number of polygons in T2 and T1;
NumRatio=#T1/#T2
AreaRatio – ratio between the areas of polygons in T2 and T1;
AreaRatio=A(T1)/A(T2)
AvgAreaRatio – ratio between the AreaRatio and NumRatio;
AvgAreaRatio=AreaRatio/NumRatio
Value
A list object with three elements - Results for the NumRatio, AreaRatio, and AvgAreaRatio metrics.
R Package Documentation
Browse R Packages
We want your feedback!
Note that we can't provide technical support on individual packages. You should contact the package authors for that.
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