//make a bar graph with an arbitrary bottom value public static BarPlot MakeBarPlot(List<decimal> xAxis, List<decimal> barTops, List<decimal>barBottoms, Color color) { BarPlot h = new BarPlot(); h.AbscissaData = xAxis; h.OrdinateDataTop = barTops; h.OrdinateDataBottom = barBottoms; h.BarWidth = 3; h.BorderColor = color; h.FillBrush = new NPlot.RectangleBrushes.Solid(color); return h; }
public PlotMockup() { infoText = ""; infoText += "THE TEST (can your charting library handle this?) - \n"; infoText += "NPlot demonstrates it can handle real world charting requirements."; // first of all, generate some mockup data. DataTable info = new DataTable( "Store Information" ); info.Columns.Add( "Index", typeof(int) ); info.Columns.Add( "IndexOffsetLeft", typeof(float) ); info.Columns.Add( "IndexOffsetRight", typeof(float) ); info.Columns.Add( "StoreName", typeof(string) ); info.Columns.Add( "BarBase", typeof(float) ); info.Columns.Add( "StoreGrowth", typeof(float) ); info.Columns.Add( "AverageGrowth", typeof(float) ); info.Columns.Add( "ProjectedSales", typeof(float) ); float barBase = 185.0f; Random r = new Random(); for (int i=0; i<18; ++i) { DataRow row = info.NewRow(); row["Index"] = i; row["IndexOffsetLeft"] = (float)i - 0.1f; row["IndexOffsetRight"] = (float)i + 0.1f; row["StoreName"] = "Store " + (i+1).ToString(); row["BarBase"] = barBase; row["StoreGrowth"] = barBase + ( (r.NextDouble() - 0.1) * 20.0f ); row["AverageGrowth"] = barBase + ( (r.NextDouble() - 0.1) * 15.0f ); row["ProjectedSales"] = barBase + ( r.NextDouble() * 15.0f ); info.Rows.Add( row ); barBase += (float)r.NextDouble() * 4.0f; } plotSurface.Clear(); plotSurface.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.AntiAlias; // generate the grid Grid grid = new Grid(); grid.VerticalGridType = Grid.GridType.Coarse; grid.HorizontalGridType = Grid.GridType.None; grid.MajorGridPen = new Pen( Color.Black, 1.0f ); plotSurface.Add( grid ); // generate the trendline LinePlot trendline = new LinePlot(); trendline.DataSource = info; trendline.AbscissaData = "Index"; trendline.OrdinateData = "BarBase"; trendline.Pen = new Pen( Color.Black, 3.0f ); trendline.Label = "Trendline"; plotSurface.Add( trendline ); // draw store growth bars BarPlot storeGrowth = new BarPlot(); storeGrowth.DataSource = info; storeGrowth.AbscissaData = "IndexOffsetLeft"; storeGrowth.OrdinateDataTop = "StoreGrowth"; storeGrowth.OrdinateDataBottom = "BarBase"; storeGrowth.Label = "Store Growth"; storeGrowth.FillBrush = NPlot.RectangleBrushes.Solid.Black; //storeGrowth.BorderPen = new Pen( Color.Black, 2.0f ); plotSurface.Add( storeGrowth ); // draw average growth bars BarPlot averageGrowth = new BarPlot(); averageGrowth.DataSource = info; averageGrowth.AbscissaData = "IndexOffsetRight"; averageGrowth.OrdinateDataBottom = "BarBase"; averageGrowth.OrdinateDataTop = "AverageGrowth"; averageGrowth.Label = "Average Growth"; averageGrowth.FillBrush = NPlot.RectangleBrushes.Solid.Gray; //averageGrowth.BorderPen = new Pen( Color.Black, 2.0f ); plotSurface.Add( averageGrowth ); // generate the projected sales step line. StepPlot projected = new StepPlot(); projected.DataSource = info; projected.AbscissaData = "Index"; projected.OrdinateData = "ProjectedSales"; projected.Pen = new Pen( Color.Orange, 3.0f ); projected.HideVerticalSegments = true; projected.Center = true; projected.Label = "Projected Sales"; projected.WidthScale = 0.7f; plotSurface.Add( projected ); // generate the minimum target line. HorizontalLine minimumTargetLine = new HorizontalLine( 218, new Pen( Color.Green, 3.5f ) ); minimumTargetLine.Label = "Minimum Target"; minimumTargetLine.LengthScale = 0.98f; minimumTargetLine.ShowInLegend = true; // off by default for lines. plotSurface.Add( minimumTargetLine ); // generate the preferred target line. HorizontalLine preferredTargetLine = new HorizontalLine( 228, new Pen( Color.Blue, 3.5f ) ); preferredTargetLine.Label = "Preferred Target"; preferredTargetLine.LengthScale = 0.98f; preferredTargetLine.ShowInLegend = true; // off by default for lines. plotSurface.Add( preferredTargetLine ); // make some modifications so that chart matches requirements. // y axis. plotSurface.YAxis1.TicksIndependentOfPhysicalExtent = true; plotSurface.YAxis1.TickTextNextToAxis = false; //plotSurface.YAxis1.TicksAngle = 3.0f * (float)Math.PI / 2.0f; // Not required if TicksAngle bug #2000693 fixed ((LinearAxis)plotSurface.YAxis1).LargeTickStep = 10.0; ((LinearAxis)plotSurface.YAxis1).NumberOfSmallTicks = 0; // x axis plotSurface.XAxis1.TicksIndependentOfPhysicalExtent = true; plotSurface.XAxis1.TickTextNextToAxis = false; //plotSurface.XAxis1.TicksAngle = (float)Math.PI / 2.0f; // Not required if TicksAngle bug #2000693 fixed LabelAxis la = new LabelAxis( plotSurface.XAxis1 ); for (int i=0; i<info.Rows.Count; ++i) { la.AddLabel( (string)info.Rows[i]["StoreName"], Convert.ToInt32(info.Rows[i]["Index"]) ); } la.TicksLabelAngle = (float)90.0f; la.TicksBetweenText = true; plotSurface.XAxis1 = la; plotSurface.XAxis2 = (Axis)plotSurface.XAxis1.Clone(); plotSurface.XAxis2.HideTickText = true; plotSurface.XAxis2.LargeTickSize = 0; Legend l = new Legend(); l.NumberItemsVertically = 2; l.AttachTo( XAxisPosition.Bottom, YAxisPosition.Left ); l.HorizontalEdgePlacement = NPlot.Legend.Placement.Outside; l.VerticalEdgePlacement = NPlot.Legend.Placement.Inside; l.XOffset = 5; l.YOffset = 50; l.BorderStyle = NPlot.LegendBase.BorderType.Line; plotSurface.Legend = l; plotSurface.Title = "Sales Growth Compared to\n" + "Average Sales Growth by Store Size - Rank Order Low to High"; plotSurface.Refresh(); }