Would like to have the ability to multi-group on chart's x-axis. Sample chart as http://goo.gl/h4l4C3

Hi,

We often need to modify values of an existing graph (either to change values, or filter existing set). However animation is very ugly when doing this, as it starts the animation from start. It would be awesome if animation could be more configurable, and would allow to control how animation is processed when chart's data is changed.

Thanks!

Legend displays series type/style in addition to color. Currently it only supports color and displayed as a colored square. In charts with multiple series types/styles it is impossible to distinguish between the different series based on legend only.

add delay parameter for the chart tooltips (like showAfter property for the kendo.ui.tooltip) so you're able to configure if you'd like to see a tooltip if you just move the mouse pointer over a chart.
Parameter should be available on all wrappers esp. MVC.

At this time rendering a chart based on a large amount of data takes a while during that period:
- loading animation stops moving
- browser does not respond to any action
- worst case the bowsers long-running-script alert appears

Suggestions:
- Would it be possible (for telerik) to do the rendering of chart in a JS web worker (JS background thread)?
- and/or is it possible to cut rendering code into small pieces (common solution to avoid browser message mentioned above) using setTimeout()? 
- give user the ability to stop rendering chart (ideally show percentage of rendering progress)

Benefits:
- keep loading animation moving while chart is rendered
- letting the user decide to stop the script if it takes too long
- suppressing browser message caused by long running script

Several forum posts have mentioned that the best way to customize a legend is to hide Kendo's and make our own. I would be so great if we could just customize the legend similarly to most other areas of the chart that can be customized.

Have the possibility to use a specific dashType when the graph is set to "interpolate" for the missing values (null values)

Please see the attached image in this thread : 
http://www.telerik.com/forums/series-missingvalues-interpolate-using-a-different-series-dashtype

The majority of the charts right now choke heavily on large datasets.

http://dojo.telerik.com/urIne - This example shows 20,000 points on a scatterLine chart.  It takes a very long time to render this and, when panning or zooming, the redraw time is huge.  This means it is completely unsuited for any large data sets (I've found anything over ~1000 points creates a major lag for the end user).

Need the ability to group related bars on UI Chart.  We are not able to accomplish this using spacing and gaps currently.  We have multiple series of data but some of the series of data is related and there is no way to put the bars closer together to show the relationship without bunching all bars for a given interval together.

Hi,

For example, if you look at this chart in 10 days zoom view, you will notice they skip the weekends, means, they are not drawing empty data points for weekends. It is normal requirements for candle charts in stock market.

https://mbshighway.com/features/interactive-charts

User want to drag the series point as well as series line(whole series line) in any direction, so the user can move the series where he want, please refer the below URL, where user can move the series point in vertical direction only, likewise the user want to drag the series point as well as series line in any direction, so he can set the threshold  limit where he want by using the custom series and analysis the chart against his threshold limit

http://jsfiddle.net/SpaceDog/QsKaJ/1/

Please provide a property that will enable the ValueAxis of Radar Chart to be visible on top of the RadarArea series.

Currently, if the RadarArea Series has the opacity property set to 1.0, it masks the ValueAxis. To make the ValueAxis visible, the RadarArea's opacity should be reduced and this in turn makes the color of RadarArea less appealing.

Please provide a feature whereby we can make the ValueAxis visible through the RadarArea series without compromising on the opacity.

I suggest to add some simple arithmetic for the stack values and display them as label to explain the chart in a profession way. Such as showing the total time of all usage for the meeting room. So use sum({0}, {1}) and display it on top of the bar chart.

We already have click events for the plot area, axis labels, etc., but a click event for the chart title is conspicuously absent.

I have received development requests that would require this, but currently have no available workaround to allow it.

Chart series are defined with custom marker color & type(Triangle, Square). The color applied in the series get reflect in the legend color but the market type defined at series not applied to the legend.

By default all the legends are displayed as "Square" is there a way to customize or overrride to get allign with the marker style defined in each series.

Currently the shared tooltip's position gets in the way of actually seeing the current category's series, as well as hindering any attempts to click on any series behind the tooltip.

Ideally, the tooltip should form off to the side of the current category's visible/clickable elements, either dynamically based on room available, or statically based on configuration (top, bottom, left, right). 

It would be nice to have a customization on drawing animations of data visualization charts. For example, draw directions, speed.

Well basically the idea is as in the topic. Sometimes we need to show something in hh:mm:ss format on y-axis and it's not possible.

We dynamically update our charts based off a polling period. If there was tooltip show/hide events, we could suspend polling while the tooltip is visible. Currently, we continue to poll and when the dataSource is updated, the tooltip goes away. This unfortunately leads to another problem that when that tooltip is displayed again, the displayed point no longer resides on the plot line. I'll file a defect report for that.

This event is useful on mobile device to drill-down serie, while tap (click) is for showing tooltip (or viceversa)