HTheil {OasisR} | R Documentation |
A function to compute Theil's entropy segregation index
Description
The entropy index (also called information index) measures departure from evenness by assessing each spatial unit deviation from the entropy in the area.
Usage
HTheil (x)
Arguments
x |
an object of class matrix (or which can be coerced to that class), where each column represents the distribution of a group within spatial units. The number of columns should be greater than 1 (at least 2 groups are required). You should not include a column with total population, because this will be interpreted as a group. |
Value
A numeric vector containing Theils's segregation index values for each group
References
Theil H. (1972) Statistical decomposition analysis: with applications in the social and administrative. Amsterdam, North-Holland, 337 p.
See Also
One-group evenness indices:
ISDuncan
, Gini
, Gorard
,
Atkinson
, 'ISWong
, ISMorrill
,
ISMorrillK
Between groups dissimilarity indices:
DIDuncan
, Gini2
,
DIMorrill
, DIMorrillK
, DIWong
Examples
x <- segdata@data[ ,1:2]
HTheil(x)