Audiometric chart

[Luigi Bardetti]

Hello, 

i need to build an Audiometric chart like this in c# .net 4

chart

x values are: 125, 500, 1000, 2000, 4000, 8000 Consider that the series can have intermediate values, example 750, 3000, 6000.

i suppose that values are logarithmic but I could not find the correct values.

[Danail Vasilev]

Hi,

You can use scatter line series with a logarithmic axis.


Regards,
Danail Vasilev
Telerik

[Luigi Bardetti]

logarithmic axis with which base?

consider that i want to show only these values in x Axis 125, 500, 1000, 2000, 4000, 8000

[Marin Bratanov]

Hello Luigi,

If you can find a logarithm base that will provide these numbers, setting it to the chart should work. I am not sure, however, that such a value exists.

Thus, I can suggest using a category series and setting the x-axis values yourself. This will remove the grid lines that indicate that the scale is logarithmic, but I do not see them in your original example either. Here is a basic example:

<telerik:RadHtmlChart runat="server" ID="RadHtmlChart1" Width="800px" Height="500px">
    <PlotArea>
        <XAxis>
            <TitleAppearance Text="Frequency (Hz)"></TitleAppearance>
            <Items>
                <telerik:AxisItem LabelText="125" />
                <telerik:AxisItem LabelText="500" />
                <telerik:AxisItem LabelText="1000" />
                <telerik:AxisItem LabelText="2000" />
                <telerik:AxisItem LabelText="4000" />
                <telerik:AxisItem LabelText="8000" />
            </Items>
        </XAxis>
        <YAxis Reversed="true" AxisCrossingValue="999999">
            <TitleAppearance Text="Intensity (dB)"></TitleAppearance>
        </YAxis>
        <Series>
            <telerik:LineSeries Name="firstSeries">
                <Items>
                    <telerik:SeriesItem YValue="10"/>
                    <telerik:SeriesItem YValue="10"/>
                    <telerik:SeriesItem YValue="10"/>
                    <telerik:SeriesItem YValue="80"/>
                    <telerik:SeriesItem YValue="15"/>
                    <telerik:SeriesItem YValue="20"/>
                </Items>
            </telerik:LineSeries>
        </Series>
    </PlotArea>
</telerik:RadHtmlChart>

Regards,

Marin Bratanov
Telerik