Window Inspector: improve symmetry

swharden · Oct 27, 2021 · 62ac992 · 62ac992
1 parent ec19e25
commit 62ac992
Showing 1 changed file with 4 additions and 1 deletion.
diff --git a/src/FftSharp.Demo/FormWindowInspector.cs b/src/FftSharp.Demo/FormWindowInspector.cs
@@ -32,7 +32,7 @@ private void lbWindows_SelectedIndexChanged(object sender, EventArgs e)
 
         private void UpdateTimePlot(IWindow window)
         {
-            double[] xs = ScottPlot.DataGen.Consecutive(100);
+            double[] xs = ScottPlot.DataGen.Consecutive(101);
             double[] ys = window.Create(xs.Length);
 
             plotWindow.Plot.Clear();
@@ -50,6 +50,9 @@ private void UpdateFrequencyPlot(IWindow window)
             double[] windowed = window.Apply(ys);
             double[] power = Transform.FFTpower(windowed);
 
+            // hide DC component
+            power[0] = power[1];
+
             plotFreq.Plot.Clear();
             var sig = plotFreq.Plot.AddSignal(power, fftSize / 2);
             sig.OffsetX = -.5;