`R/weights.R`

`gda_knn_weights.Rd`

Create a k-nearest neighbors based spatial weights

```
gda_knn_weights(
geoda_obj,
k,
power = 1,
is_inverse = FALSE,
is_arc = FALSE,
is_mile = TRUE
)
```

- geoda_obj
An instance of geoda

- k
a positive integer number for k-nearest neighbors

- power
(optional) The power (or exponent) of a number says how many times to use the number in a multiplication.

- is_inverse
(optional) FALSE (default) or TRUE, apply inverse on distance value

- is_arc
(optional) FALSE (default) or TRUE, compute arc distance between two observations

- is_mile
(optional) TRUE (default) or FALSE, convert distance unit from mile to km.

An instance of Weight-class

```
if (FALSE) {
guerry_path <- system.file("extdata", "Guerry.shp", package = "rgeoda")
guerry <- geoda_open(guerry_path)
knn6_w <- gda_knn_weights(guerry, 6)
summary(knn6_w)
}
```