diff --git a/plots/resolution.2D.regular.plt b/plots/resolution.2D.regular.plt
new file mode 100644
index 0000000..d07e1a9
--- /dev/null
+++ b/plots/resolution.2D.regular.plt
@@ -0,0 +1,17 @@
+set terminal postscript enhanced
+
+# hello world
+
+set log xy
+set key right bottom
+
+set xrange [0.008:0.18]
+
+set xlabel "Mesh Spacing"
+set ylabel "RMS of error"
+
+plot './resolution.2D.64.out' \
+   u 1:3 t "{/Symbol n} = 2" w l,\
+"" u 1:4 t "{/Symbol n} = 3" w l,\
+"" u 1:5 t "{/Symbol n} = 4" w l,\
+"" u 1:6 t "{/Symbol n} = 5" w l;
diff --git a/plots/resolution.gnuplot b/plots/resolution.gnuplot
deleted file mode 100644
index 213edce..0000000
--- a/plots/resolution.gnuplot
+++ /dev/null
@@ -1,18 +0,0 @@
-set terminal postscript enhanced
-
-# hello world
-
-set log xy
-set key right bottom
-
-set xrange [0.008:0.18]
-
-set xlabel "Mesh Spacing"
-set ylabel "RMS of error"
-
-plot './resolution.2D.64.out' u 1:2 t "{/Symbol n} = 1" w l,\
-                           "" u 1:3 t "{/Symbol n} = 2" w l,\
-                           "" u 1:4 t "{/Symbol n} = 3" w l,\
-                           "" u 1:5 t "{/Symbol n} = 4" w l,\
-                           "" u 1:6 t "{/Symbol n} = 5" w l;
-                           # "" u 1:7 t "{/Symbol n} = 6" w l;