1 files changed, 42 insertions, 0 deletions
diff --git a/R/rsc.R b/R/rsc.R
new file mode 100644
index 0000000..6cf4e15
--- /dev/null
+++ b/R/rsc.R
@@ -0,0 +1,42 @@
+rsc <- function(cv, threshold = "minimum") {
+  if (class(cv) == "rsc_cv") {
+    if (is.numeric(threshold)) {
+      if (length(threshold) > 1) {
+        stop("if a specific value for 'threshold' is chosen, this must be a single numeric value in (0,1)")
+      }
+      else if (threshold <= 0 | threshold >= 1) {
+        stop("if a specific value for 'threshold' is chosen, this must be a single numeric value in (0,1)")
+      }
+    }
+    else {
+      if ({
+        threshold != "minimum"
+      } & {
+        threshold != "minimum1se"
+      }) {
+        stop("'threshold' must be one of the following: 'minimum', 'minimum1se', a numeric value in (0,1).")
+      }
+      if (threshold == "minimum") {
+        threshold <- cv$minimum
+      }
+      else if (threshold == "minimum1se") {
+        threshold <- cv$minimum1se
+      }
+    }
+    cv$rmadvec[abs(cv$rmadvec) < threshold] <- 0
+    nc <- length(cv$rmadvec)
+    p <- {
+      1 + sqrt(1 + 8 * nc)
+    }/2
+    R <- Matrix(1, nrow = p, ncol = p, sparse = TRUE)
+    R[lower.tri(R, diag = FALSE)] <- cv$rmadvec
+    R <- forceSymmetric(R, uplo = "L")
+    if (!is.null(cv$varnames)) {
+      dimnames(R)[[1]] <- dimnames(R)[[2]] <- cv$varnames
+    }
+  }
+  else {
+    stop("'cv' must be a an object of class 'rsc_cv' obtained from 'rsc::rsc_cv'")
+  }
+  return(R)
+}