fix: property missings of PipeOpFindCorrelation

Author: sebffischer

NEWS.md

@@ -1,6 +1,7 @@
 # mlr3filters 0.7.1-9000
 
 * Parameter value `na.rm` is properly initialized to `TRUE` (Thanks to @bblodfon)
+* Bugfix: property `missings` is now set correctly for `FilterFindCorrelation`
 
 # mlr3filters 0.7.1
 

R/FilterFindCorrelation.R

@@ -94,6 +94,14 @@ FilterFindCorrelation = R6Class("FilterFindCorrelation",
       # The following has the correct names and values, BUT we need scores in
       # reverse order. Shift by 1 to get positive values.
       1 - apply(cm, 2, max)
+    },
+    .get_properties = function() {
+      use = self$param_set$values$use %??% "everything"
+      if (use %in% c("complete.obs", "pairwise.complete.obs")) {
+        "missings"
+      } else {
+        character(0)
+      }
     }
   )
 )