switch 2-by-2 plot setting to default 1-by-1 for future plotting convenience.

examples/MRS_and_Machine_Learning/Bike_Rental_Estimation_with_MRS/MRS_bike_rental_estimation_AML_replication.R

@@ -220,6 +220,7 @@ plot(dForestA_mrs, main = "OOB Error Rate vs Number of Trees: Set A")
 plot(dForestB_mrs, main = "OOB Error Rate vs Number of Trees: Set B")
 plot(dForestC_mrs, main = "OOB Error Rate vs Number of Trees: Set C")
 plot(dForestD_mrs, main = "OOB Error Rate vs Number of Trees: Set D")
+par(mfrow = c(1, 1))
 
 #---------------------------Step 5: Predict over new data---------------------------
 ## Set A: