Hi Benny,
Your problem may be caused by passing unsorted data to the RadChart. While the chart does position each object according to the X axis, it doesn't connect it to its neighbor relative to the X axis, but rather to its corresponding neighbor from the underlying data source.
Consider this example:
In this case, the KeyValuePairs are sorted by Key (DateTime) in advance, so the chart will render as shown in the attached chart_sorted.jpg file.
On the other hand, should you populate the chart like this:
That is, should you populate the chart with unsorted data, it will render as shown in the attached chart_unsorted.jpg file.
Note that in both cases the data points are sorted relative to the X axis, but the order in which they are connected depends on the way they've been passed to the RadChart.
Kind regards,
Ivan N.
the Telerik team