You can create vertical text for axis labels using the JavaScript function which adds the carriage return ( \n ) to each character.

This sample chart is to show how to create vertical English text for the X-axis label. The name of the JavaScript function ( "labelFunc" ) is set to the value of the labelJsFunction attribute in the <CategoryAxis> element tag.

<Line2DChart ...  >
    <CategoryAxis ... labelJsFunction="labelFunc" > 

function labelFunc(id, value)()
  var str = value;
  var len = str.length;
  var filterStr="";

  for( var i=0; i < len ; i++)
    filterStr += str.substring(i,i+1) + "\n";
  return filterStr;

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