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POZedGraph RealTime Data Plotting C#
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copied!<pre><code> public void DrawingPulseData(byte[] data) { // Make sure that the curvelist has at least one curve if (PulseControl.GraphPane.CurveList.Count <= 0) return; // Get the first CurveItem in the graph LineItem curve = PulseControl.GraphPane.CurveList[0] as LineItem; if (curve == null) return; // Get the PointPairList IPointListEdit list = curve.Points as IPointListEdit; // If this is null, it means the reference at curve.Points does not // support IPointListEdit, so we won't be able to modify it if (list == null) return; double time = (Environment.TickCount - tickStart) / 1000.0; for (int i = 0; i < count; i++) { list.Add(time, (double)data[i]); } Scale xScale = PulseControl.GraphPane.XAxis.Scale; if (time > xScale.Max - xScale.MajorStep) { xScale.Max = time + xScale.MajorStep; xScale.Min = xScale.Max - 30.0; } // Make sure the Y axis is rescaled to accommodate actual data PulseControl.AxisChange(); // Force a redraw PulseControl.Invalidate(); count = 0; } </code></pre> <p>Hi. I am using this method to draw real time data in zedgraph. <code>count</code> is length of incoming serial port data. This code works fine in timer(20ms) and draws data at each tick. However if i move this method into a class it does not work correctly. It draws too fast and wrong data. </p> <pre><code>public static void DrawingPulseData(byte[] data,ZedGraphControl zgc,int count, int TickStart) </code></pre> <p>I changed parameters like this after moving it into class. I changed PulseControl as zgc, tickstart as TickStart. I could not understand why it is not work same as the first code.</p> <p><img src="https://i.stack.imgur.com/0oH3q.jpg" alt="enter image description here"></p> <p>At the first picture,using code provided by @discomurray, i wrote this code statement out of the if's scopes. It gives me data like this.</p> <pre><code> Scale xScale = zgc.GraphPane.XAxis.Scale; xScale.Max = now; xScale.Min = now - 30.0; </code></pre> <p><img src="https://i.stack.imgur.com/J67i0.jpg" alt="enter image description here"></p> <p>If i write the same code statement into if's scopes data looks like picture above. It is a 10 seconds record. I don't have such a data with my method.</p>

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