Create Gantt Chart

I want to create a Gantt Chart. And the Datastructure is like this:
maschine 1   from 01.08.2011 19:00 to 01.08.2011 22:15
maschine 1   from 02.08.2011 12:00 to 02.08.2011 14:00
maschine 2 from 1.08.2011 11:00 to 01.08.2011 13:00
maschine 2 from 2.08.2011 13:00 to 02.08.2011 14:00
and so on.
I want that the x axis include the maschine and on the y- axis are this timeareas.  I bind my datatable to the radchart. But  i have over 400 rows in this (but only 100 machines) . So in my chart i  get over 400 x-axis labels. I want to group my data for one machine . I hope you could understand. thanks a lot!
edit: i attached an example from my radchart. (but only with 5 machines)

no idea?
shall i post sourcecode?

Hi Hannes,

This happens beacuse RadChart will create a new item in the X axis for each item in the datasource. In order to achieve the desired result, you will need to populate the chart and create the X axis items manually. I have attached a small example showing this. Some notes on it:

• The datasource should be sorted by the field that provides the values for X axis
• There is an artificial numeric field added -- it is used for the correct positioning of the ChartSeriesItems along the X axis.

Kind regards,
Ves
the Telerik team