Live update the trend point in Angular Widget?

[ewang]

Hi,

 

 

 

I am using the real-time support in Angular Widget. It updates nicely every 1 second with dataStreamURL, and I now want to add a trend point in to the chart so that it will be pushed forward by the needle as the needle moves. So it will simulate a **moving** high watermark effect. I understand the trend point is statically defined in the XML file. But is there a way to capture the event as soon as the chart receives a new value in order to do tricks with the trend point?

 

 

 

Would it be nice to have the chart raise an event similar to FC_DataLoaded(DOMId).....? Instead of raising an event once, it raises an event everytime a new value is received.

 

 

 

 

 

Thanks

Edited November 19, 2009 by Guest

[Guest Madhumita]

Hi,

Welcome to FusionCharts Forum

I am afraid, you can not live update any trendpoint as you can update a dial. Hence, using realtime update you can not simulate the **moving** high watermark effect. But, you can always keep updating the chart using dataXML method (can get the latest XML using AJAX) , to set a new dial value and new trendpoint.

You can opt to set animation off (animation='0' ) to make the transition smooth.

In case, you are using realtime update, you can use the callback function FC_ChartUpdated() which is invoked whenever a new value is set.

[ewang]

Thanks! it works! FC_ChartUpdated is not in the online documentation, please update the doc.

[Guest Madhumita]

Hello,

You are most welcome.

The FC_ChartUpdated() is expalined in the documentation link below:

http://www.fusioncharts.com/widgets/docs/?Linear_JSPAPI.html

 

Happy FusionCharting.