refine polygon demo #255

ScottPlot · Apr 5, 2020 · 40d6d22 · 40d6d22
1 parent 5a225d9
commit 40d6d22
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Showing 2 changed files with 4 additions and 3 deletions.
diff --git a/src/ScottPlot.Demo/PlotTypes/Polygon.cs b/src/ScottPlot.Demo/PlotTypes/Polygon.cs
@@ -44,15 +44,14 @@ public void Render(Plot plt)
                 var dataX = DataGen.Consecutive(dataY.Length, spacing: 0.025);
 
                 // create an array with an extra point on each side of the data
-                double baseline = 0;
                 var xs = new double[dataX.Length + 2];
                 var ys = new double[dataY.Length + 2];
                 Array.Copy(dataX, 0, xs, 1, dataX.Length);
                 Array.Copy(dataY, 0, ys, 1, dataY.Length);
                 xs[0] = dataX[0];
                 xs[xs.Length - 1] = dataX[dataX.Length - 1];
-                ys[0] = baseline;
-                ys[ys.Length - 1] = baseline;
+                ys[0] = 0;
+                ys[ys.Length - 1] = 0;
 
                 // separate the data into two arrays (for positive and negative)
                 double[] neg = new double[ys.Length];
@@ -71,6 +70,7 @@ public void Render(Plot plt)
                 plt.PlotPolygon(xs, pos, "positive", lineWidth: 1,
                     lineColor: Color.Black, fillColor: Color.Green, fillAlpha: .5);
                 plt.Title("Shaded Line Plot (negative vs. positive)");
+                plt.Legend(location: ScottPlot.legendLocation.lowerLeft);
                 plt.AxisAuto(0);
             }
         }

diff --git a/tests/PlotTypes/Polygon.cs b/tests/PlotTypes/Polygon.cs
@@ -82,6 +82,7 @@ public void Test_PlotPolygon_SimulateShadedCurve()
             plt.PlotPolygon(arrX, arrY, lineWidth: 1, lineColor: Color.Black, fillAlpha: .5);
 
             plt.Title("Shaded Line Plot");
+            plt.Legend(location: ScottPlot.legendLocation.lowerLeft);
             TestTools.SaveFig(plt);
         }