Difference between revisions of "ChartView"

Revision as of 14:08, 22 July 2014

History

Version 1.4 - Released 2014-07-22

• New:
  • Compatible with Xojo Web Applications

Version 1.3 - Released 2014-04-25

• New:
  • Chart Type: Scatter
  • Chart View is now Retina compatible.
  • Animation is optimized and works on MacOS
  • Drawing optimizations
  • Smoother drawing on Windows
  • Display a Linear regression line on Scatter charts (TrendLine)
  • Display a Moving Average line
• Fix:
  • ToCSV with empty data
  • LoadFromListbox when no data was previously loaded

Version 1.2 - Released 2013-11-27

• New:
  • Chart Types: ComboChart, PieChart, DoughnutChart, RadarChart
  • Improved HelpTags and LineSmooth performance
  • AnimationFinished event
  • Empty value is not treated as 0 but as missing value.
  • Logarithmic (base 10) scale on Vertical Axis
  • ChartSerie function Average, to calculate the average value of the Serie.
  • ExportGraph function, exports the Chart in the passed picture. This can be used for Sparklines
  • StartAnimation now takes a AnimationType property. Check the ChartAnimate constants.
  • BackgroundAlternate constant
  • ChartSerie TotalValue property, the sum of all values.
• Fix:
  • TypeColumnStacked with negative values and transparency.
• Improved:
  • Improved speed of drawing Area charts up to 60%

Version 1.0 - Released 2013-05-06

First public release of the ChartView

• Features:
  • Chart Types:
    • Column, ColumnStacked, ColumnStacked100
    • Line, LineStacked, LineSmooth
    • Area, AreaStacked, AreaStepped

Version 1.0 - Released 2013-05-06

First public release of the ChartView

• Features:
  • Chart Types:
    • Column, ColumnStacked, ColumnStacked100
    • Line, LineStacked, LineSmooth
    • Area, AreaStacked, AreaStepped

Notes

Defining the default colors

The default colors for each Chartserie is entirely customizable.

• The quick way:

In the ChartView.open event use one of the following lines:

me.setDefaultColors = me.PaletteGoogle
me.setDefaultColors = me.PaletteOffice2010
me.setDefaultColors = me.PaletteWindows8

• The advanced way:

In the ChartView.open event:

Redim me.DefaultColors(-1) //Deleting all DefaultColors
 
me.DefaultColors.append &cFF0000 //red
me.DefaultColors.append &c00FF00 //green
me.DefaultColors.append &cFF0000 //purple
...
  If f is Nil or f.Exists = False then
    MsgBox("Ressource files are missing")
    Return
  End If
test=250

Changing display options when loading Data

When using one of the following functions:

• LoadFromCSV
• LoadFromDB
• LoadFromListbox

The ChartView automatically refreshes the display.
If you need to edit the display before refreshing, you can use the Freeze property to prevent refreshing:

me.Freeze = True //This freezes the display until you unfreeze it
me.LoadFromListbox(Listbox1)
 
//Edit the ChartSerie colors
For i = 0 to Ubound(me.Series)
 
  If i = 0 then
    me.Series(i).FillColor = &cFF0000
  Elseif i = 1 then
    me.Series(i).FillColor = &c00FF00
  Elseif i = 2 then
    me.Series(i).FillColor = &c0000FF
 
//And so on for all series
  End If
Next i
 
//Edit the Y Axis
me.Axes(1).MinimumScale = 10
 
me.Freeze = False //Unfreeze the display
 
If me.Animate then
  me.StartAnimation()
else
  me.Redisplay()
End If

See Also

ChartAxis, ChartHelpTag, ChartLabel, ChartLine, ChartMarkLine, ChartPlot, ChartSerie classes.