Question

http://www.amcharts.com/demos/simple-column-chart/#theme-none 我正在关注这个脚本

var chart = AmCharts.makeChart("chartdiv", {
    "type": "serial",
    "theme": "none",
    "dataProvider": [{
        "country": "USA",
        "visits": 2025
    }, {
        "country": "China",
        "visits": 1882
    }, {
        "country": "Japan",
        "visits": 1809
    }, {
        "country": "Germany",
        "visits": 1322
    }, {
        "country": "UK",
        "visits": 1122
    }, {
        "country": "France",
        "visits": 1114
    }, {
        "country": "India",
        "visits": 984
    }, {
        "country": "Spain",
        "visits": 711
    }, {
        "country": "Netherlands",
        "visits": 665
    }, {
        "country": "Russia",
        "visits": 580
    }, {
        "country": "South Korea",
        "visits": 443
    }, {
        "country": "Canada",
        "visits": 441
    }, {
        "country": "Brazil",
        "visits": 395
    }],
    "valueAxes": [{
        "gridColor":"#FFFFFF",
        "gridAlpha": 0.2,
        "dashLength": 0
    }],
    "gridAboveGraphs": true,
    "startDuration": 1,
    "graphs": [{
        "balloonText": "[[category]]: <b>[[value]]</b>",
        "fillAlphas": 0.8,
        "lineAlpha": 0.2,
        "type": "column",
        "valueField": "visits"      
    }],
    "chartCursor": {
        "categoryBalloonEnabled": false,
        "cursorAlpha": 0,
        "zoomable": false
    },
    "categoryField": "country",
    "categoryAxis": {
        "gridPosition": "start",
        "gridAlpha": 0,
         "tickPosition":"start",
         "tickLength":20
    },
    "exportConfig":{
      "menuTop": 0,
      "menuItems": [{
      "icon": '/lib/3/images/export.png',
      "format": 'png'     
      }]  
    }
});

当我删除除2个国家/地区以外的所有数据（我的意思是2个条形图）时，条形图的宽度会增加到整页尺寸。

<html>
  <head>
    <script type="text/javascript" src="http://www.amcharts.com/lib/3/amcharts.js"></script>
<script type="text/javascript" src="http://www.amcharts.com/lib/3/serial.js"></script>
<script type="text/javascript" src="http://www.amcharts.com/lib/3/themes/none.js"></script>
    <script>
    var chart = AmCharts.makeChart("chartdiv", {
    "type": "serial",
    "theme": "none",
    "dataProvider": [{
        "country": "USA",
        "visits": 2025
    }, {
        "country": "China",
        "visits": 1882
    }],
    "valueAxes": [{
        "gridColor":"#FFFFFF",
        "gridAlpha": 0.2,
        "dashLength": 0
    }],
    "gridAboveGraphs": true,
    "startDuration": 1,
    "graphs": [{
        "balloonText": "[[category]]: <b>[[value]]</b>",
        "fillAlphas": 0.8,
        "lineAlpha": 0.2,
        "type": "column",
        "valueField": "visits"      
    }],
    "chartCursor": {
        "categoryBalloonEnabled": false,
        "cursorAlpha": 0,
        "zoomable": false
    },
    "categoryField": "country",
    "categoryAxis": {
        "gridPosition": "start",
        "gridAlpha": 0,
         "tickPosition":"start",
         "tickLength":20
    },
    "exportConfig":{
      "menuTop": 0,
      "menuItems": [{
      "icon": '/lib/3/images/export.png',
      "format": 'png'     
      }]  
    }
});
</script>
<style type="text/css">
#chartdiv {
    width       : 100%;
    height      : 500px;
    font-size   : 11px;
}   
</style>
  </head>
  <body>
    <div id="chartdiv"></div>
  </body>
</html>

我甚至尝试在css中删除宽度100％，但没有成功。

我只想要有一个数据然后打印一个小（固定）尺寸的条形图。如果超过1则应自动添加...（不关心右侧空间）

Answer 1

您可以使用graph.fixedColumnWidth属性轻松强制所有列处于相同的恒定像素宽度。

以下是相关文档：

http://docs.amcharts.com/3/javascriptcharts/AmGraph#fixedColumnWidth

代码：

"graphs": [{
    "balloonText": "[[category]]: <b>[[value]]</b>",
    "fillAlphas": 0.8,
    "lineAlpha": 0.2,
    "type": "column",
    "valueField": "visits",
    "fixedColumnWidth": 50
}],

工作示例： http://jsfiddle.net/amcharts/nctpzzbr/

如果您需要图表容器根据图表中的实际元素数量增长/缩小，它会更复杂但也可能。

为此，我们将使用＆＃34; AmCharts.addInitHandler＆＃34;属性设置我们自己的函数，以在>呈现图表之前执行：

// this will get executed BEFORE chart is drawn // we'll use it to modify the width of the chart area AmCharts.addInitHandler(function(chart) { // total offsets reserved for margins var offsets = 100; // pixel value reserved for each category var categoryWidth = 80; // calculate width var width = offsets + chart.dataProvider.length * categoryWidth; // set container width document.getElementById("chartdiv").style.width = "" + width + "px"; // since the chart is already build for the initial container size we need to // revalidate it's size. we'll delay a little bit the call to invalidateSize() // so that the chart elements are created first setTimeout(function () { chart.invalidateSize(); document.getElementById("chartdiv").style.display = "block"; }, 1); }, ['serial']);

这是一个使用上述代码的工作示例： http://jsfiddle.net/amcharts/tc3uf92e/

在amcharts的简单条形图中缩小条形图的大小

1 个答案: