how can we set selection or highlight columns based on the value like City='A' in google chart using java script-

[kungfupanda]

google.charts.load('current', {packages: ['corechart', 'bar']});

google.charts.setOnLoadCallback(drawAxisTickColors);

function drawAxisTickColors() {

      var data = new google.visualization.DataTable();

      data.addColumn('string', 'City');

      data.addColumn('number', 'Motivation Level');

      data.addColumn('number', 'Energy Level');

      data.addRows([

        ['A', 1, .25],

        ['B', 2, .5],

        ['C', 3, 1],

        ['D', 4, 2.25],

        ['E', 5, 2.25],

 

      ]);

      var options = {

        title: 'Motivation and Energy Level Throughout the Day',

        focusTarget: 'category',

        hAxis: {

          title: 'City Name',

          format: 'h:mm a',

          viewWindow: {

            min: [7, 30, 0],

            max: [17, 30, 0]

          },

          textStyle: {

            fontSize: 14,

            color: '#053061',

            bold: true,

            italic: false

          },

          titleTextStyle: {

            fontSize: 18,

            color: '#053061',

            bold: true,

            italic: false

          }

        },

        vAxis: {

          title: 'Rating (scale of 1-10)',

          textStyle: {

            fontSize: 18,

            color: '#67001f',

            bold: false,

            italic: false

          },

          titleTextStyle: {

            fontSize: 18,

            color: '#67001f',

            bold: true,

            italic: false

          }

        }

      };

      var chart = new google.visualization.ColumnChart(document.getElementById('chart_div'));

      chart.draw(data, options);

    }

[Sean Larson]

The documentation discusses methods for setSelection. To know what row to pass into setSelection, you could use getFilteredRows, which needs a column and criteria. That, or do a for loop on your dataTable by using i < data.getRows(), and data.getValue(0, i) and check if value is "a" 

Do not quote me on any of the syntax here, check those methods in the documentation for exact syntax.