Question

Below is the code I’m using, based on a how to I found in Google’s documentation, but I’m not sure if it applies to the Geochart, if I’m doing it right, or if there is some other way to do it for a Geochart.

This code works fine if I don’t include the tooltip column. When I do, I get the error “Incompatible data table: Error: Table contains more columns than expected (Expecting 2 columns),” displayed where the Geochart should be.

This question addresses the same issue, but not specifically for a Geochart.

<script type='text/javascript' src='https://www.google.com/jsapi'></script>
<script type='text/javascript'>

    google.load( 'visualization', '1', { 'packages': ['geochart'] } );
    google.setOnLoadCallback( drawRegionsMap );

    function drawRegionsMap()
    {

        var data = google.visualization.arrayToDataTable([
            [ 'State', 'Relevance', {type: 'string', role: 'tooltip'} ],
            [ 'Alabama', 3, 'tooltip test text' ],
            [ 'Arizona', 1, 'tooltip test text' ],
        ]);

        var options =
        {
            region:         'US',
            resolution:     'provinces',
        };

        var chart = new google.visualization.GeoChart( document.getElementById( 'chart_div' ) );
        chart.draw( data, options );

    };

</script>

Answer 1

It seems like it is impossible to format the text the exact way I was attempting to with the GeoChart tool. Below is the solution I finally came up with and the rendered map:

Rendered Map with Tooltip View

PHP & JavaScript Code

<!-- generate geo map -->
<script type='text/javascript' src='https://www.google.com/jsapi'></script>
<script type='text/javascript'>

    google.load( 'visualization', '1', { 'packages': ['geochart'] } );
    google.setOnLoadCallback( drawRegionsMap );

    function drawRegionsMap()
    {

        // create data table
        var data = google.visualization.arrayToDataTable([
            <?php echo $data_table; ?>
        ]);

        // create chart object
        var chart = new google.visualization.GeoChart(
            document.getElementById( 'chart_div' )
        );

        // defines the data for the tooltip
        var formatter = new google.visualization.PatternFormat('{0}');
        formatter.format( data, [0,1], 1 );
        var formatter = new google.visualization.PatternFormat('{2}');
        formatter.format( data, [0,1,2], 0 );

        // defines the data for the chart values
        var view = new google.visualization.DataView(data);
        view.setColumns([0, 1]);

        // set options for this chart
        var options =
        {
            width:          <?php echo $width; ?>,
            region:         'US',
            resolution:     'provinces',
            colorAxis: { colors: ['#abdfab', '#006600'] },
            legend: 'none'
        };

        // draw chart
        chart.draw( view, options );

    };

</script>

<div id="chart_div" style="width: <?php echo $width; ?>px; height: <?php echo $height; ?>px;"></div>

Rendered HTML

<script type='text/javascript' src='https://www.google.com/jsapi'></script>
<script type='text/javascript'>

    google.load( 'visualization', '1', { 'packages': ['geochart'] } );
    google.setOnLoadCallback( drawRegionsMap );

    function drawRegionsMap()
    {

        // create data table
        var data = google.visualization.arrayToDataTable([
            [ 'State', 'in', 'String' ],
            [ 'Arizona', 2, 'Has Facility, Sells Direct' ],
            [ 'California', 4, 'Has Facility, Has Distributor, Sells Direct' ],
            [ 'Colorado', 1, 'Sells Direct' ],
            [ 'Florida', 1, 'Has Distributor' ],
            [ 'Georgia', 1, 'Has Distributor' ],
            [ 'Idaho', 1, 'Sells Direct' ],
            [ 'Illinois', 1, 'Has Distributor' ],
            [ 'Indiana', 1, 'Has Distributor' ],
            [ 'Iowa', 1, 'Has Distributor' ],
            [ 'Kansas', 1, 'Has Distributor' ],
            [ 'Kentucky', 1, 'Has Distributor' ],
            [ 'Louisiana', 1, 'Has Distributor' ],
            [ 'Maryland', 2, 'Has Distributor' ],
            [ 'Montana', 1, 'Sells Direct' ],
            [ 'Nevada', 2, 'Has Facility, Sells Direct' ],
            [ 'New Mexico', 2, 'Has Facility, Sells Direct' ],
            [ 'North Carolina', 1, 'Has Distributor' ],
            [ 'North Dakota', 1, 'Has Distributor' ],
            [ 'Oklahoma', 1, 'Sells Direct' ],
            [ 'Oregon', 1, 'Sells Direct' ],
            [ 'Pennsylvania', 1, 'Has Distributor' ],
            [ 'South Carolina', 1, 'Has Distributor' ],
            [ 'Tennessee', 1, 'Has Distributor' ],
            [ 'Texas', 1, 'Has Distributor' ],
            [ 'Utah', 2, 'Has Facility, Sells Direct' ],
            [ 'Washington', 1, 'Sells Direct' ],
            [ 'Wyoming', 1, 'Sells Direct' ],       ]);

        // create chart object
        var chart = new google.visualization.GeoChart(
            document.getElementById( 'chart_div' )
        );

        // defines the data for the tooltip
        var formatter = new google.visualization.PatternFormat('{0}');
        formatter.format( data, [0,1], 1 );
        var formatter = new google.visualization.PatternFormat('{2}');
        formatter.format( data, [0,1,2], 0 );

        // defines the data for the chart values
        var view = new google.visualization.DataView(data);
        view.setColumns([0, 1]);

        // set options for this chart
        var options =
        {
            width:          286,
            region:         'US',
            resolution:     'provinces',
            colorAxis: { colors: ['#abdfab', '#006600'] },
            legend: 'none'
        };

        // draw chart
        chart.draw( view, options );

    };

</script>

<div id="chart_div" style="width: 286px; height: 180px;"></div>