Inverse Axis

Since Q2 2011 Inverse Axis feature was released. It allows the axes values of RadChart to be inverted.

The IsInverse property can be set independently of the Axis range - it works both with automatic range and custom one(AutoRange = false).

The following sample code will show you how this can be achieved:

this.radChart.DefaultView.ChartArea.AxisY.IsInverse = true; 
//Line Chart 
DataSeries lineSeries = new DataSeries(); 
lineSeries.LegendLabel = "Turnover"; 
lineSeries.Definition = new LineSeriesDefinition(); 
lineSeries.Add(new DataPoint() { YValue = 154, XCategory = "Jan" }); 
lineSeries.Add(new DataPoint() { YValue = 138, XCategory = "Feb" }); 
lineSeries.Add(new DataPoint() { YValue = 143, XCategory = "Mar" }); 
lineSeries.Add(new DataPoint() { YValue = 120, XCategory = "Apr" }); 
lineSeries.Add(new DataPoint() { YValue = 135, XCategory = "May" }); 
lineSeries.Add(new DataPoint() { YValue = 125, XCategory = "Jun" }); 
lineSeries.Add(new DataPoint() { YValue = 179, XCategory = "Jul" }); 
lineSeries.Add(new DataPoint() { YValue = 170, XCategory = "Aug" }); 
lineSeries.Add(new DataPoint() { YValue = 198, XCategory = "Sep" }); 
lineSeries.Add(new DataPoint() { YValue = 187, XCategory = "Oct" }); 
lineSeries.Add(new DataPoint() { YValue = 193, XCategory = "Nov" }); 
lineSeries.Add(new DataPoint() { YValue = 176, XCategory = "Dec" }); 
this.radChart.DefaultView.ChartArea.DataSeries.Add(lineSeries); 
//Bar Chart 
DataSeries barSeries = new DataSeries(); 
barSeries.LegendLabel = "Expenses"; 
barSeries.Definition = new BarSeriesDefinition(); 
barSeries.Add(new DataPoint() { YValue = 45, XCategory = "Jan" }); 
barSeries.Add(new DataPoint() { YValue = 48, XCategory = "Feb" }); 
barSeries.Add(new DataPoint() { YValue = 53, XCategory = "Mar" }); 
barSeries.Add(new DataPoint() { YValue = 41, XCategory = "Apr" }); 
barSeries.Add(new DataPoint() { YValue = 32, XCategory = "May" }); 
barSeries.Add(new DataPoint() { YValue = 28, XCategory = "Jun" }); 
barSeries.Add(new DataPoint() { YValue = 63, XCategory = "Jul" }); 
barSeries.Add(new DataPoint() { YValue = 74, XCategory = "Aug" }); 
barSeries.Add(new DataPoint() { YValue = 77, XCategory = "Sep" }); 
barSeries.Add(new DataPoint() { YValue = 85, XCategory = "Oct" }); 
barSeries.Add(new DataPoint() { YValue = 89, XCategory = "Nov" }); 
barSeries.Add(new DataPoint() { YValue = 80, XCategory = "Dec" }); 
this.radChart.DefaultView.ChartArea.DataSeries.Add(barSeries); 

InitializeComponent() 
Dim lineSeries As New DataSeries() 
    lineSeries.LegendLabel = "Turnover" 
    lineSeries.Definition = New LineSeriesDefinition() 
    Dim dataPoint As New DataPoint() 
    dataPoint.YValue = 154 
    dataPoint.XCategory = "Jan" 
    lineSeries.Add(dataPoint) 
    dataPoint = New DataPoint() 
    dataPoint.YValue = 138 
    dataPoint.XCategory = "Feb" 
    lineSeries.Add(dataPoint) 
    dataPoint = New DataPoint() 
    dataPoint.YValue = 143 
    dataPoint.XCategory = "Mar" 
    lineSeries.Add(dataPoint) 
    dataPoint = New DataPoint() 
    dataPoint.YValue = 120 
    dataPoint.XCategory = "Apr" 
    lineSeries.Add(dataPoint) 
    dataPoint = New DataPoint() 
    dataPoint.YValue = 135 
    dataPoint.XCategory = "May" 
    lineSeries.Add(dataPoint) 
    dataPoint = New DataPoint() 
    dataPoint.YValue = 125 
    dataPoint.XCategory = "Jun" 
    lineSeries.Add(dataPoint) 
    dataPoint = New DataPoint() 
    dataPoint.YValue = 179 
    dataPoint.XCategory = "Jul" 
    lineSeries.Add(dataPoint) 
    dataPoint = New DataPoint() 
    dataPoint.YValue = 170 
    dataPoint.XCategory = "Aug" 
    lineSeries.Add(dataPoint) 
    dataPoint = New DataPoint() 
    dataPoint.YValue = 198 
    dataPoint.XCategory = "Sep" 
    lineSeries.Add(dataPoint) 
    dataPoint = New DataPoint() 
    dataPoint.YValue = 187 
    dataPoint.XCategory = "Sep" 
    lineSeries.Add(dataPoint) 
    dataPoint = New DataPoint() 
    dataPoint.YValue = 193 
    dataPoint.XCategory = "Nov" 
    lineSeries.Add(dataPoint) 
    dataPoint = New DataPoint() 
    dataPoint.YValue = 176 
    dataPoint.XCategory = "Dec" 
    lineSeries.Add(dataPoint) 
    telerikChart.DefaultView.ChartArea.DataSeries.Add(lineSeries) 
    'Bar Chart ' 
    Dim barSeries As New DataSeries() 
    barSeries.LegendLabel = "Expenses" 
    barSeries.Definition = New BarSeriesDefinition() 
    dataPoint = New DataPoint() 
    dataPoint.YValue = 45 
    dataPoint.XCategory = "Jan" 
    barSeries.Add(dataPoint) 
    dataPoint = New DataPoint() 
    dataPoint.YValue = 48 
    dataPoint.XCategory = "Feb" 
    barSeries.Add(dataPoint) 
    dataPoint = New DataPoint() 
    dataPoint.YValue = 53 
    dataPoint.XCategory = "Mar" 
    barSeries.Add(dataPoint) 
    dataPoint = New DataPoint() 
    dataPoint.YValue = 41 
    dataPoint.XCategory = "Apr" 
    barSeries.Add(dataPoint) 
    dataPoint = New DataPoint() 
    dataPoint.YValue = 32 
    dataPoint.XCategory = "May" 
    barSeries.Add(dataPoint) 
    dataPoint = New DataPoint() 
    dataPoint.YValue = 28 
    dataPoint.XCategory = "Jun" 
    barSeries.Add(dataPoint) 
    dataPoint = New DataPoint() 
    dataPoint.YValue = 63 
    dataPoint.XCategory = "Jul" 
    barSeries.Add(dataPoint) 
    dataPoint = New DataPoint() 
    dataPoint.YValue = 74 
    dataPoint.XCategory = "Aug" 
    barSeries.Add(dataPoint) 
    dataPoint = New DataPoint() 
    dataPoint.YValue = 77 
    dataPoint.XCategory = "Sep" 
    barSeries.Add(dataPoint) 
    dataPoint = New DataPoint() 
    dataPoint.YValue = 85 
    dataPoint.XCategory = "Oct" 
    barSeries.Add(dataPoint) 
    dataPoint = New DataPoint() 
    dataPoint.YValue = 89 
    dataPoint.XCategory = "Nov" 
    barSeries.Add(dataPoint) 
    dataPoint = New DataPoint() 
    dataPoint.YValue = 80 
    dataPoint.XCategory = "Dec" 
    barSeries.Add(dataPoint) 
    telerikChart.DefaultView.ChartArea.DataSeries.Add(barSeries) 

Note the IsInverse property of the YAxis which is false by default. Turned on it will reverse the axis. The picture shows it in action:

For a sample with databound Chart - take a look at our Inverse Axis demo.

Optionally you may inverse the XAxis too - it will display the categories from Dec to Jan:

this.radChart.DefaultView.ChartArea.AxisX.IsInverse = true; 

telerikChart.DefaultView.ChartArea.AxisX.IsInverse = true