Display relatime data

[Christian]

Hello,

like the title reveals, I need to display data, that is updated irregularly, but at least once every few seconds.

Is it possible to bind the Chart to a SignalR hub, like it is for the grid? (http://demos.telerik.com/aspnet-mvc/grid/signalr)
Which other approaches promise good and efficient results? Polling of WebAPI? A separat SignalR function and adding data to chart on client side?

Thank you in advance.

[Christian]

I am sorry for the writing error within the title of this tread.
It would be nice, if an admin could correct it.

[T. Tsonev]

Hi,

I'd recommend SignalR as it is a better solution in terms of performance and efficiency.

There seems to be an issue with the current version of the Chart MVC wrappers with regards to the SignalR data source configuration.
It will actually work for reading data, but the update/delete/create methods are not configurable.

We're looking into this and we'll try to provide support for live updates in the short term.

For the moment I've prepared a JS version as a proof of concept.

Apologies for the caused inconvenience.

Regards,
T. Tsonev
Telerik

 

 

[deleteme]

Hello, Tsvetomir (am I right, is it your name?)

In your sample the transition of the chart is turned off, therefore the series update without animation and chart re-drawing. But if the transition is turned on, all the chart re-draws, when the data is updated, not only serie. So, is it possible to combine real-time chart series update with animation of these series, but not the whole chart? For example, I have a bar chart with a datasource, that updates via signalr and the only bar serie. Perhaps, the current value of the serie is 10 poins. Now, the datasource update its value to 15. I want the bar of the serie smoothly come longer from 10 to 15, not from 0 to 15. So, is it possible? Sorry for my English, it's not my mother tongue :)

[T. Tsonev]

Hello,

Such incremental updates are not available right now, but this is something that we definitely consider.
There are some technical issues that we need to address first, but we're already working on them.

Apologies for the caused inconvenience.

Regards,
T. Tsonev
Telerik

 

 

[deleteme]

It will be great! Thank you for answer!

[Robert]

Status on this?

[quote]T. Tsonev said:Hi,

I'd recommend SignalR as it is a better solution in terms of performance and efficiency.

There seems to be an issue with the current version of the Chart MVC wrappers with regards to the SignalR data source configuration.
It will actually work for reading data, but the update/delete/create methods are not configurable.

We're looking into this and we'll try to provide support for live updates in the short term.

For the moment I've prepared a JS version as a proof of concept.

Apologies for the caused inconvenience.

Regards,
T. Tsonev
Telerik

 

 

[/quote]

[T. Tsonev]

Hi,

I've made an up-to-date example for a SignalR bound Chart available on GitHub.

I hope this helps.

Regards,
T. Tsonev
Telerik

[Robert]

Indeed this is great!

 Thank you