Hi , In order to hide a particular dataset in the beginning using chartjs , you can use this feature hidden attribute in config to get a strike through like this: https://jsfiddle.net/oefarbwq/

   "columns"=>array(
                "category",               
 "value"=>array(
              
                    "type"=>"number",
                    "chartType"=>"line",
                    "config"=>array(
                        "type"=>"line",//Line chart is drawn
                      'hidden'=>true

                    ),
                )

It was not mentioned in the docs , hence wanted to update anyone who might need this in future.