Quantile LISA Statistics

Function to apply quantile LISA statistics

Usage

st_local_quantilelisa(
  sfj,
  varcol,
  k,
  q,
  wt = NULL,
  permutations = 999,
  permutation_method = "complete",
  significance_cutoff = 0.05,
  cpu_threads = 6,
  seed = 123456789
)

Arguments

sfj

An sf (simple feature) object.

varcol

The variable selected to calculate spatial lag, which is a character.

k

A value indicates the number of quantiles. Value range e.g. [1, 10].

q

A value indicates which quantile or interval used in local join count statistics. Value stars from 1.

wt

(optional) The spatial weights object,which can use st_weights() to construct,default is constructed by st_weights(sfj,'contiguity').

permutations

(optional) The number of permutations for the LISA computation.

permutation_method

(optional) The permutation method used for the LISA computation. Options are 'complete', 'lookup'. Default is 'complete'.

significance_cutoff

(optional) A cutoff value for significance p-values to filter not-significant clusters.

cpu_threads

(optional) The number of cpu threads used for parallel LISA computation.

seed

(optional) The seed for random number generator.

Value

A factor vector.

Author

Wenbo Lv lyu.geosocial@gmail.com

Examples

guerry_path = system.file("extdata", "Guerry.shp", package = "rgeoda")
guerry = sf::read_sf(guerry_path)
st_local_quantilelisa(guerry,"Crm_prs",k = 4, q = 1)
#>  [1] Not significant Not significant Not significant Significant    
#>  [5] Not significant Not significant Not significant Not significant
#>  [9] Not significant Not significant Significant     Significant    
#> [13] Not significant Not significant Not significant Not significant
#> [17] Not significant Not significant Not significant Not significant
#> [21] Not significant Not significant Not significant Not significant
#> [25] Not significant Not significant Not significant Significant    
#> [29] Not significant Not significant Not significant Significant    
#> [33] Not significant Not significant Not significant Not significant
#> [37] Not significant Not significant Not significant Not significant
#> [41] Not significant Not significant Not significant Not significant
#> [45] Not significant Not significant Not significant Not significant
#> [49] Not significant Not significant Not significant Not significant
#> [53] Not significant Not significant Not significant Not significant
#> [57] Not significant Not significant Not significant Not significant
#> [61] Not significant Not significant Not significant Not significant
#> [65] Not significant Not significant Not significant Not significant
#> [69] Not significant Not significant Not significant Not significant
#> [73] Not significant Not significant Not significant Not significant
#> [77] Not significant Not significant Significant     Significant    
#> [81] Not significant Not significant Not significant Not significant
#> [85] Not significant
#> Levels: Not significant Significant Undefined Isolated