Bump to development version.

 * R/sampling_distance.R: Fix bug with a single configuration in one iteration.

Author: MLopez-Ibanez

DESCRIPTION

@@ -1,6 +1,6 @@
 Package: iraceplot
 Title: Plots for Visualizing the Data Produced by the 'irace' Package
-Version: 2.0.0
+Version: 2.0.0.9999
 Authors@R: c(person("Manuel", "López-Ibáñez", role = c("aut", "cre"),
                     email = "manuel.lopez-ibanez@manchester.ac.uk",
                     comment = c(ORCID = "0000-0001-9974-1295")),

NEWS.md

@@ -1,3 +1,7 @@
+# iraceplot (development version)
+
+ * Fix bug in `sampling_distance()` with a single configuration in one iteration.
+ 
 # iraceplot 2.0
 
  * Requires R >= 4.0 and irace >= 4.0.

R/sampling_distance.R

@@ -53,9 +53,8 @@ sampling_distance <- function(irace_results, type = c("boxplot", "line", "both")
   for (i in seq_len(niterations)) {
     ids <- unique(irace_results$state$experiment_log[ iteration %in% i, configuration])
     iterations <- c(iterations, i)
-
     dd <- all.distance[ids,ids]
-    distance <- dd[upper.tri(dd)]
+    distance <- if (length(dd) == 1L) dd else dd[upper.tri(dd)]
     it <- i
     datos <- data.frame(it, distance)
     tabla_box <- rbind(tabla_box, datos)