Solved

High charts using knockout

Posted on 2015-01-21
10
539 Views
Last Modified: 2015-01-30
I need to implement high chart using knockout binding handlers. ..
I have to dynamically bind Jon data to the chart series to render the chart...
Any help is appreciated
0
Comment
Question by:Rose Babu
  • 5
  • 4
10 Comments
 
LVL 50

Expert Comment

by:Steve Bink
ID: 40563201
I just recently implemented Highcharts using a JSON data source.  Since I was hooking Highcharts into an existing process, it was a little messy, but it came out OK.  

What area are you having trouble with?
0
 
LVL 42

Expert Comment

by:Rob Jurd, EE MVE
ID: 40563501
I need to implement high chart using knockout binding handlers. ..
Why? Modifying the data source and redrawing the chart will dynamically update the chart.

As a note, putting the JSON data into a knockout observable and then modifying the JSON data within the observable will NOT trigger knockout to do raise any events.  

I need more information about why you want to include knockout with your chart.
0
 
LVL 16

Author Comment

by:Rose Babu
ID: 40565726
As a note, putting the JSON data into a knockout observable and then modifying the JSON data within the observable will NOT trigger knockout to do raise any events.



Yes it is not triggering ...how can I generate chart in knockout ..With default data it is loading but with json data it s not working
0
 
LVL 16

Author Comment

by:Rose Babu
ID: 40565734
Hi Steve ...I also supposed to generate chart with json value in knockout. .I can generate chart with handlers using default value by cannot make it work dynamically with json call
0
 
LVL 42

Expert Comment

by:Rob Jurd, EE MVE
ID: 40565736
observables only keep track of whether the object is or isn't in the array.  It will not keep track on the properties of your JSON data unless you make them observables as well but that gets tricky with ajax loaded data so we should avoid that for now.

You stiill haven't answered why you need to use knockout?  just load the JSON data via ajax and create the chart.  No need to store the JSON data in a knockout ViewModel.
0
DevOps Toolchain Recommendations

Read this Gartner Research Note and discover how your IT organization can automate and optimize DevOps processes using a toolchain architecture.

 
LVL 16

Author Comment

by:Rose Babu
ID: 40565737
Hi Steve ...I also supposed to generate chart with json value in knockout. .I can generate chart with handlers using default value but cannot make it work dynamically with json call
0
 
LVL 16

Author Comment

by:Rose Babu
ID: 40565740
My project is fully implemented with that technology
0
 
LVL 42

Accepted Solution

by:
Rob Jurd, EE MVE earned 500 total points
ID: 40565752
Ok, so it sounds like you're storing the JSON data for the chart in an observable, hoping that any change made to that JSON data will automatically update the chart.  That's not the way knockout works, however you can force it to refresh by simply removing the object from the observable and adding it back in.

Make sense?

e.g. a very simple json example

// some observable that is initialised with null
vm.chart_data = ko.observable(null);
...
ko.applyBindings(vm);
...

// ajax here:
$.ajax({
     ...
     success: function(data) {
         vm.chart_data.removeAll();
         vm.chart_data(data); // reset the data in the observable and trigger a change event for the chart
     }
});

Open in new window

0
 
LVL 42

Expert Comment

by:Rob Jurd, EE MVE
ID: 40565754
If you can post the relevant parts of your code it would really help.
0
 
LVL 16

Author Closing Comment

by:Rose Babu
ID: 40581079
your sample code block helped me to proceed further ..Thanks rob jurd
.I have one more question open for formatting the legends can u suggest some help on that question...
0

Featured Post

Is Your Active Directory as Secure as You Think?

More than 75% of all records are compromised because of the loss or theft of a privileged credential. Experts have been exploring Active Directory infrastructure to identify key threats and establish best practices for keeping data safe. Attend this month’s webinar to learn more.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

International Data Corporation (IDC) prognosticates that before the current the year gets over disbursing on IT framework products to be sent in cloud environs will be $37.1B.
This article demonstrates how to create a simple responsive confirmation dialog with Ok and Cancel buttons using HTML, CSS, jQuery and Promises
In this tutorial viewers will learn how to style a corner ribbon overlay for an image using CSS Create a new class by typing ".Ribbon":  Define the class' "display:" as "inline-block": Define its "position:" as "relative": Define its "overflow:" as …
This tutorial will teach you the core code needed to finalize the addition of a watermark to your image. The viewer will use a small PHP class to learn and create a watermark.

929 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

13 Experts available now in Live!

Get 1:1 Help Now