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Required plugins for this example: MBS ChartDirector Plugin
You find this example project in your Plugins Download as a Xojo project file within the examples folder: /ChartDirector/curvefitting
This example is the version from Sun, 17th Mar 2012.
Project "curvefitting.xojo_binary_project"
Class App Inherits Application
Const kEditClear = "&Löschen"
Const kFileQuit = "Beenden"
Const kFileQuitShortcut = ""
End Class
Class PicWindow Inherits Window
EventHandler Sub Open() // Use random table to generate a random series. The random table is set to 1 col // x 51 rows, with 9 as the seed dim rantable as new CDRanTableMBS(9, 1, 51) // Set the 1st column to start from 100, with changes between rows from -5 to +5 rantable.setCol(0, 100, -5, 5) // Get the 1st column of the random table as the data set dim data as CDArrayMBS = rantable.getCol(0) // Create a XYChart object of size 600 x 300 pixels dim c as new CDXYChartMBS(600, 300) // Set the plotarea at (50, 35) and of size 500 x 240 pixels. Enable both the // horizontal and vertical grids by setting their colors to grey (&hc0c0c0) call c.setPlotArea(50, 35, 500, 240).setGridColor(&hc0c0c0, &hc0c0c0) // Add a title to the chart using 18 point Times Bold Itatic font. call c.addTitle("LOWESS Generic Curve Fitting Algorithm", "timesbi.ttf", 18) // Set the y axis line width to 3 pixels c.yAxis.setWidth(3) // Add a title to the x axis using 12 pts Arial Bold Italic font call c.xAxis.setTitle("Server Load (TPS)", "arialbi.ttf", 12) // Set the x axis line width to 3 pixels c.xAxis.setWidth(3) // Set the x axis scale from 0 - 50, with major tick every 5 units and minor tick // every 1 unit c.xAxis.setLinearScale(0, 50, 5, 1) // Add a blue layer to the chart dim layer as CDLineLayerMBS layer = c.addLineLayer // Add a red (&h80ff0000) data set to the chart with square symbols layer.addDataSet(data, &h80FF0000).setDataSymbol(c.kSquareSymbol) // Set the line width to 2 pixels layer.setLineWidth(2) // Use lowess for curve fitting, and plot the fitted data using a spline layer // with line width set to 3 pixels data.lowess dim d(-1) as Double dim i,count as integer count=data.count-1 for i=0 to count d.Append data.getvalue(i) next call c.addSplineLayer(d, &h0000ff).setLineWidth(3) // Set zero affinity to 0 to make sure the line is displayed in the most detail // scale c.yAxis.setAutoScale(0, 0, 0) // Output the chart Backdrop=c.makeChartPicture End EventHandler
End Class
MenuBar MenuBar1
MenuItem FileMenu = "&Ablage"
MenuItem FileQuit = "#App.kFileQuit"
MenuItem EditMenu = "&Bearbeiten"
MenuItem EditUndo = "&Rückgängig"
MenuItem UntitledMenu1 = "-"
MenuItem EditCut = "&Ausschneiden"
MenuItem EditCopy = "&Kopieren"
MenuItem EditPaste = "&Einfügen"
MenuItem EditClear = "#App.kEditClear"
MenuItem UntitledMenu0 = "-"
MenuItem EditSelectAll = "&Alles auswählen"
End MenuBar
End Project

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