[test][maxwellstefan] Improve output

test/freeflow/navierstokesnc/msfreeflowtestproblem.hh

@@ -278,7 +278,7 @@ public:
 
             //do a gnuplot
             x_.push_back(time); // in seconds
-            y_.push_back(x_n2_left);
+            y1_.push_back(x_n2_left);
             y2_.push_back(x_n2_right);
             y3_.push_back(x_co2_left);
             y4_.push_back(x_co2_right);
@@ -290,8 +290,8 @@ public:
             gnuplot_.setYRange(0.4, 0.6);
             gnuplot_.setXlabel("time [s]");
             gnuplot_.setYlabel("mole fraction mol/mol");
-            gnuplot_.addDataSetToPlot(x_, y_, "N2 left");
-            gnuplot_.addDataSetToPlot(x_, y2_, "N2 right");
+            gnuplot_.addDataSetToPlot(x_, y1_, "N2_left.dat", "w l t 'N_2 left'");
+            gnuplot_.addDataSetToPlot(x_, y2_, "N2_right.dat", "w l t 'N_2 right'");
             gnuplot_.plot("mole_fraction_N2");
 
             gnuplot2_.resetPlot();
@@ -299,8 +299,8 @@ public:
             gnuplot2_.setYRange(0.0, 0.6);
             gnuplot2_.setXlabel("time [s]");
             gnuplot2_.setYlabel("mole fraction mol/mol");
-            gnuplot2_.addDataSetToPlot(x_, y3_, "C02 left");
-            gnuplot2_.addDataSetToPlot(x_, y4_, "C02 right");
+            gnuplot2_.addDataSetToPlot(x_, y3_, "CO2_left.dat", "w l t 'CO_2 left'");
+            gnuplot2_.addDataSetToPlot(x_, y4_, "CO2_right.dat", "w l t 'CO_2 right'");
             gnuplot2_.plot("mole_fraction_C02");
 
             gnuplot3_.resetPlot();
@@ -308,8 +308,8 @@ public:
             gnuplot3_.setYRange(0.0, 0.6);
             gnuplot3_.setXlabel("time [s]");
             gnuplot3_.setYlabel("mole fraction mol/mol");
-            gnuplot3_.addDataSetToPlot(x_, y5_, "H2 left");
-            gnuplot3_.addDataSetToPlot(x_, y6_, "H2 right");
+            gnuplot3_.addDataSetToPlot(x_, y5_, "H2_left.dat", "w l t 'H_2 left'");
+            gnuplot3_.addDataSetToPlot(x_, y6_, "H2_right.dat", "w l t 'H_2 right'");
             gnuplot3_.plot("mole_fraction_H2");
         }
 
@@ -409,7 +409,7 @@ private:
     Dumux::GnuplotInterface<Scalar> gnuplot3_;
 
     std::vector<Scalar> x_;
-    std::vector<Scalar> y_;
+    std::vector<Scalar> y1_;
     std::vector<Scalar> y2_;
     std::vector<Scalar> y3_;
     std::vector<Scalar> y4_;