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328 Frequency Histograms, Pareto Diagrams, Probability Charts
Me.BarFillColor = Color.Blue
Me.BarLineColor = Color.Black
Adding Control Lines and Normal Curve to Histogram Plot
Revision 1.7 adds a couple of new features to the histogram plot. First, you can add
control limit alarm lines to the histogram plot. The control limit lines will be parallel to
the frequency axis. Second, a normal distribution curve can be overlaid on top of the
histogram data. The parameters are selected to give the normal distribution curve the
same mean, standard deviation and area as the underlying histogram data. If the
underlying data is normal, then there should be a relatively close fit between the normal
curve and the underlying frequency data.
Histogram Control Limit Lines and Normal Curve fit
[C#]
this.AddFrequencyHistogramControlLine(20.0,new ChartAttribute(Color.LightGreen,
2));
this.AddFrequencyHistogramControlLine(60.0,new ChartAttribute(Color.LightGreen,
2));
this.AutoNormalCurve = true;