diff --git a/examples/Emulator/RandomFeature/scalar_optimize_and_plot_RF.jl b/examples/Emulator/RandomFeature/scalar_optimize_and_plot_RF.jl
index a1a0fce93..d202f0391 100644
--- a/examples/Emulator/RandomFeature/scalar_optimize_and_plot_RF.jl
+++ b/examples/Emulator/RandomFeature/scalar_optimize_and_plot_RF.jl
@@ -14,6 +14,8 @@ using CalibrateEmulateSample.ParameterDistributions
 case = "scalar"
 println("running case $case")
 
+diagonalize_input = true
+
 plot_flag = true
 if plot_flag
     using Plots
@@ -75,7 +77,7 @@ if plot_flag
         zguidefontrotation = 90,
     )
 
-    figpath = joinpath(output_directory, "RF_" * case * "_observed_y1nonoise.png")
+    figpath = joinpath(output_directory, "RF_observed_y1nonoise.png")
     savefig(figpath)
 
     p2 = plot(
@@ -89,7 +91,7 @@ if plot_flag
         ylabel = "x2",
         zguidefontrotation = 90,
     )
-    figpath = joinpath(output_directory, "RF_" * case * "_observed_y2nonoise.png")
+    figpath = joinpath(output_directory, "RF_observed_y2nonoise.png")
     savefig(figpath)
 
     p3 = plot(
@@ -103,7 +105,7 @@ if plot_flag
         ylabel = "x2",
         zguidefontrotation = 90,
     )
-    figpath = joinpath(output_directory, "RF_" * case * "_observed_y1.png")
+    figpath = joinpath(output_directory, "RF_observed_y1.png")
     savefig(figpath)
 
     p4 = plot(
@@ -117,15 +119,15 @@ if plot_flag
         ylabel = "x2",
         zguidefontrotation = 90,
     )
-    figpath = joinpath(output_directory, "RF_" * case * "_observed_y2.png")
+    figpath = joinpath(output_directory, "RF_observed_y2.png")
     savefig(figpath)
 
 end
 
 # setup random features
-n_features = 200
+n_features = 180
 
-srfi = ScalarRandomFeatureInterface(n_features, p)
+srfi = ScalarRandomFeatureInterface(n_features, p, diagonalize_input = diagonalize_input)
 emulator = Emulator(srfi, iopairs, obs_noise_cov = Σ, normalize_inputs = true)
 println("build RF with $n training points and $(n_features) random features.")