//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();
}