title: Google chart line chart - turn off tooltip for a single column
body: <p>I know this question was already asked before <a href="https://stackoverflow.com/questions/9271449/using-google-visualization-api-how-to-turn-off-tooltips-for-a-single-column">Using Google Visualization API, how to turn off tooltips for a single column?</a>, but i didn't get familiar answer.Please can somebody tell me how to turn off tooltip for a single column?.I tried this</p>
  
  <pre><code>chart.draw(data, {trigger:'none'});
  </code></pre>
  
  <p>but it turns off tooltip for all the columns.I want only one column with tooltip disabled and all other columns should have enabled tooltip.</p>