Hi Andrew,
The data passed to Donut/Pie chart is actually added to one series, which is just visually displayed as separate ones, thus stacking/grouping in these chart types is currently not possible.
As for the border set to the series, there is an already feature request for the same, so you can vote for it here:
https://feedback.telerik.com/aspnet-ajax/1373488
In the item above you can see also a sample on how you can set a border through the Kendo widget of the chart:
Javascript:
<script language="javascript">
function pageLoad() {
var chart = $find("RadHtmlChart1");
chart._chartObject.options.series[0].border = {
width: 2,
color: "black",
dashType: "dash",
opacity: 0.2
}
chart.repaint();
}
</script>
ASPX:
<telerik:RadHtmlChart ID="RadHtmlChart1" runat="server" Width="600" Height="400">
<PlotArea>
<Series>
<telerik:ColumnSeries>
<SeriesItems>
<telerik:CategorySeriesItem Y="30" />
<telerik:CategorySeriesItem Y="10" />
<telerik:CategorySeriesItem Y="20" />
</SeriesItems>
</telerik:ColumnSeries>
</Series>
</PlotArea>
</telerik:RadHtmlChart>
Regards,
Vessy
Progress Telerik
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