title: NVD3 legend Show/Hide chart getting scale / zoom feature disabling
body: <p>I have 2 line chart shown side by side which has 5 lines being plotted on each chart. So there  are 5 legend for each of them. Unchecking each legend would hide the respective line specific to legend and optimize(May be zooming or scale) the chart with new scale measurement. </p>
  
  <p>This is default functionality of legend. What i am looking for is ONLY just show/hide respective line. No other functionality  like zoom/scale so that user does get distracted by zooming as s/he is comparing 2 charts side by side. I hunted documentation but did not find these feature on/off information.</p>