我可以自定义Google Geochart图表中的工具提示文字吗？

Question

以下是我正在使用的代码,基于我在Google的文档中找到的方式,但我不确定它是否适用于Geochart,如果我做得对,或者还有其他方法可以做它适用于Geochart.

如果我不包含工具提示列,此代码可以正常工作.当我这样做时,我得到错误"不兼容的数据表:错误:表包含比预期更多的列(期望2列),"显示Geochart应该在哪里.

这个问题解决了同样的问题,但并不是专门针对Geochart的.

<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

我能够在工具提示中包含我想要的文本,包括这样的值:

var data = new google.visualization.DataTable();
data.addColumn('string', 'Country'); // Implicit domain label col.
data.addColumn('number', 'Value'); // Implicit series 1 data col.
data.addColumn({type:'string', role:'tooltip'}); // 

data.addRows([

    [{v:"US",f:"United States of America"},1,"21% of Visits"],

    [{v:"GB",f:"United Kingdom"},2,"7% of visits"],

    [{v:"DE",f:"Germany"},3,"6% of visits"],

    [{v:"FR",f:"France"},4,"5% of visits"],

    [{v:"ES",f:"Spain"},5,"5% of visits"],

    [{v:"CA",f:"Canada"},6,"4% of visits"],

    [{v:"IT",f:"Italy"},7,"4% of visits"],

    [{v:"NL",f:"The Netherlands"},8,"4% of visits"],

    [{v:"BR",f:"Brazil"},9,"4% of visits"],

    [{v:"TR",f:"Turkey"},10,"3% of visits"],

    [{v:"IN",f:"India"},11,"3% of visits"],

    [{v:"RU",f:"Russia"},12,"3% of visits"],

    [{v:"AU",f:"Australia"},13,"2% of visits"],

]);

这样,例如"美利坚合众国"将是工具提示的第1行,"21%的访问"将是第二行.使用这种格式,我可以在工具提示中包含我想要的任何文本.

Answer 2

为了自定义工具提示以使用包含新行/图像的html,请查看以下示例:http: //jsfiddle.net/SD4KA/

    google.load('visualization', '1.1', {packages: ['geochart'], callback: drawVisualization});

function drawVisualization() {
    var data = google.visualization.arrayToDataTable([
        ['Country', 'Value', {role: 'tooltip', p:{html:true}}],
        ['Russia', 5, 'Hello world<br>test'],
        ['US', 20, '<img src="https://www.google.com/images/srpr/logo6w.png"/>']]);
    var chart = new google.visualization.GeoChart(document.getElementById('visualization'));
    chart.draw(data, {
        width: 800,
        height: 600,
        tooltip: {
            isHtml: true
        }
    });
}

由于v1.1 geochart支持工具提示的html

Answer 3

这个帖子中有三种选择

• 手动设置数据点的格式化值(使用#setFormattedValue()DataTable方法)
• 在DataTable列上使用其中一个格式化程序
• 在DataTable中包含" 工具提示 "角色列

我亲自使用过第一个,你的例子应该是这样的

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

Answer 4

我为散点图遇到了类似的问题.我不得不使用arrayToDataTable的数据进入图表,而不是DataTable()和addColumn()在其他的答案建议.

为了使其正常工作,您可以arrrayToDataTable()像当前一样进行调用并保存到变量数据中.

然后,您需要指定要将哪个列视为工具提示(并且您还必须指定应绘制哪些列).在以下示例中,列0和1包含绘图数据,第2列包含工具提示字符串.

var view = new google.visualization.DataView(data);
view.setColumns([0, 1, {sourceColumn: 2,role:'tooltip'}]);

最后,您必须使用视图变量而不是数据变量进行绘制调用:

chart.draw(view, options);

Answer 5

似乎不可能按照我尝试使用 GeoChart 工具的方式设置文本格式。下面是我最终想出的解决方案和渲染的地图：

带有工具提示视图的渲染地图

PHP 和 JavaScript 代码

<!-- 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>

渲染的 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>