CODEWITHSUNDEEP
javascriptinfovis
Jhilom
Jhilom

Reputation: 1028

Zoom Button on JIT Rgraph

While using R graph(Javascript Infovis Toolkit) I found only mouse wheel can be used as zoom in and out. Can any one help me with how I may control the graph with two buttons instead of mouse wheel.

Upvotes: 0

Views: 961

Answers (1)

Alex
Alex

Reputation: 11

This is an example for the Force directed variant for graph named

You can change the .zooming value as provided in the example, in this one I set it to 15 and it zooms fairly slowly. fd:

function zoom(delta)
{
     if (fd) 
     {
          var val = fd.controller.Navigation.zooming/1000; 
          var ans = 1 - (delta * val);
          fd.canvas.scale(ans, ans);
     }    
}

Upvotes: 1

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