From a16c2c98a6bccfaba897b0a8658eb1939886f843 Mon Sep 17 00:00:00 2001 From: "Walvoort, Dennis" <dennis.walvoort@wur.nl> Date: Tue, 5 Jan 2021 21:51:02 +0100 Subject: [PATCH] changed http to https for www.java.com --- vignettes/spcosa.Rmd | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/vignettes/spcosa.Rmd b/vignettes/spcosa.Rmd index e90f5f6..348df8e 100755 --- a/vignettes/spcosa.Rmd +++ b/vignettes/spcosa.Rmd @@ -154,7 +154,7 @@ storing spatial information, and the **ggplot2**-package (Wickham, 2009) for vis ## Algorithms -The basic idea is to distribute sampling points evenly over the study area by selecting these points in compact spatial strata. Compact strata can be obtained by _k_-means clustering of the cells making up a fine grid representing the study area of interest. Two _k_-means algorithms have been implemented in the **spcosa**-package: a transfer algorithm and a swopping algorithm (Walvoort _et al_, 2010). The transfer algorithm obtains compact clusters (strata) by transferring cells from one cluster to the other, whereas the swopping algorithm achieves this by swopping cells between clusters. The first algorithm results in compact clusters, whereas the second algorithm results in compact clusters of equal size. For reasons of efficiency, both algorithms have been implemented in the [Java](http://www.java.com) language and communicate with **R** (R Core Team, 2015) by means of the **rJava**-package (Urbanek, 2013). +The basic idea is to distribute sampling points evenly over the study area by selecting these points in compact spatial strata. Compact strata can be obtained by _k_-means clustering of the cells making up a fine grid representing the study area of interest. Two _k_-means algorithms have been implemented in the **spcosa**-package: a transfer algorithm and a swopping algorithm (Walvoort _et al_, 2010). The transfer algorithm obtains compact clusters (strata) by transferring cells from one cluster to the other, whereas the swopping algorithm achieves this by swopping cells between clusters. The first algorithm results in compact clusters, whereas the second algorithm results in compact clusters of equal size. For reasons of efficiency, both algorithms have been implemented in the [Java](https://www.java.com) language and communicate with **R** (R Core Team, 2015) by means of the **rJava**-package (Urbanek, 2013). -- GitLab