spvar {sdsfun} | R Documentation |
spatial variance
Description
spatial variance
Usage
spvar(x, wt, method = "cpp")
Arguments
x |
A numerical vector . |
wt |
The spatial weight matrix. |
method |
(optional) The method for calculating spatial variance, which can be chosen as
either |
Details
The spatial variance formula is
\Gamma = \frac{\sum_i \sum_{j \neq i} \omega_{ij}\frac{(y_i-y_j)^2}{2}}{\sum_i \sum_{j \neq i} \omega_{ij}}
Value
A numerical value.
Examples
gzma = sf::read_sf(system.file('extdata/gzma.gpkg',package = 'sdsfun'))
wt1 = inverse_distance_swm(gzma)
spvar(gzma$PS_Score,wt1)
[Package sdsfun version 0.4.1 Index]