Flot：自定义条形图

时间：2018-03-28 18:00:41

标签： javascript jquery flot

我目前正在制作条形图，并希望达到以下要求：

  1. 每个栏的标签
  2. 将网格居中放置在网格中间

    3. 这是我的jquery代码：

    var data = [[0,206],[1,118],[2,37]];
    var dataset = [
        { label: "", data: data, color: "#296292" }
    ];
    var ticks = [[0,"CPU"],[1,"Hung Process"],[2,"Disk Queue"]];
    var options = {
        series: {
            bars: {
                show: true
            }
        },
        bars: {
            align: "center",
            barWidth: 0.5, fill: 1
        },
        xaxis: {
            axisLabel: "Alerts",
            axisLabelUseCanvas: true,
            axisLabelFontSizePixels: 12,
            axisLabelFontFamily: 'Verdana, Arial',
            axisLabelPadding: 10,
            ticks: ticks
        
        },
        yaxis: {
            //axisLabel: "Count",
            axisLabelUseCanvas: true,
            axisLabelFontSizePixels: 12,
            axisLabelFontFamily: 'Verdana, Arial',
            axisLabelPadding: 3,
        },
        legend: {
            noColumns: 0,
            labelBoxBorderColor: "#000000",
            position: "nw"
        },
        grid: {
            hoverable: true,
            borderWidth: 2,        
            backgroundColor: { colors: ["#ffffff", "#EDF5FF"] }
        }
    };


    $(document).ready(function () {
        debugger
        $.plot($("#top5Alerts_canvas"), dataset, options);
    });

    这是我的期望： enter image description here

    1. 我想在每个栏的顶部显示标签，我该如何设置？
    2. 如何在网格和条形图之间设置相等的宽度？

      3. 目前，我得到了这个： enter image description here

      非常感谢任何帮助。提前谢谢。

1 个答案:

答案 0 :(得分：1)

  1. 您必须使用插件（或自己编写代码）。例如https://github.com/winne27/flot-valuelabels。

  2. 您可以通过设置x轴的最小值和最大值来实现此目的。

    3. 请参阅完整示例的代码段。

    // valuelabel plugin code (https://github.com/winne27/flot-valuelabels)

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Ma=0;Ma<B.data.length;++Ma)B.data[Ma][0]=+B.data[Ma][0],B.data[Ma][1]=+B.data[Ma][1]}g=S||A||k;for(var Ma=0;Ma<B.data.length;++Ma)if(null!==B.data[Ma]){if(s=B.data[Ma][0],d=B.data[Ma][1],l=F&&B.data[Ma].length>2?B.data[Ma][2]:!1,g){if(c=!1,S&&pa==d&&!B.bars.horizontal?(c=!0,n=I,h=D,v=q,S=!1):S&&La==s&&B.bars.horizontal?(c=!0,n=I,h=D,x=K,S=!1):A&&ma==d&&!B.bars.horizontal?(c=!0,n=R,h=X,v=E,A=!1):A&&wa==s&&B.bars.horizontal?(c=!0,n=R,h=X,x=N,A=!1):k&&Ma==B.data.length-1&&!B.bars.horizontal?(c=!0,n=Y,h=j,v=W):k&&Ma==B.data.length-1&&B.bars.horizontal&&(c=!0,n=Y,h=j,x=U),!c)continue}else la&&0>d&&!B.bars.horizontal?(n=Z,h=-1*T,"above"==Q?Q="below":"below"==Q&&(Q="above"),v=Q):(n=Z,h=T,v=Q,x=J);if("top"==v&&(v="above"),ga&&(s=B.xaxis.categories[s]),ca&&(d=B.yaxis.categories[d]),!(s<B.xaxis.min||s>B.xaxis.max||d<B.yaxis.min||d>B.yaxis.max)){if(l!==!1)L=l;else{if(L=B.bars.horizontal?s:d,null==L&&(L=""),0===L&&(ea||ia))continue;ra!==!1&&(L=parseFloat(L).toFixed(ra))}if(B.valueLabels.valueLabelFunc&&(L=B.valueLabels.valueLabelFunc({series:B,seriesIndex:a,index:Ma})),L=""+L,L=V(L,{series:B,point:B.data[Ma]}),!ta||L!=ha||Ma==B.data.length-1){if(B.bars.horizontal&&(t.font=aa,y=fa||na?10:6,Math.abs(B.xaxis.p2c(s)-B.xaxis.p2c(0))<t.measureText(L).width+Math.abs(n)+y&&"outside"!=x&&(n=-1*n,x="outside")),oa&&(L=L.toString().replace(".",",")),w=0,ia){var 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// code for chart

var data = [
  [0, 206],
  [1, 118],
  [2, 37]
];
var dataset = [{
  label: "",
  data: data,
  color: "#296292",
  valueLabels: {
    show: true
  }
}];
var ticks = [
  [0, "CPU"],
  [1, "Hung Process"],
  [2, "Disk Queue"]
];
var options = {
  series: {
    bars: {
      show: true
    }
  },
  bars: {
    align: "center",
    barWidth: 0.5,
    fill: 1
  },
  xaxis: {
    axisLabel: "Alerts",
    axisLabelUseCanvas: true,
    axisLabelFontSizePixels: 12,
    axisLabelFontFamily: 'Verdana, Arial',
    axisLabelPadding: 10,
    ticks: ticks,
    min: -0.5,
    max: 2.5
  },
  yaxis: {
    //axisLabel: "Count",
    axisLabelUseCanvas: true,
    axisLabelFontSizePixels: 12,
    axisLabelFontFamily: 'Verdana, Arial',
    axisLabelPadding: 3,
  },
  legend: {
    noColumns: 0,
    labelBoxBorderColor: "#000000",
    position: "nw"
  },
  grid: {
    hoverable: true,
    borderWidth: 2,
    backgroundColor: {
      colors: ["#ffffff", "#EDF5FF"]
    }
  }
};

$(document).ready(function() {
  debugger
  $.plot($("#top5Alerts_canvas"), dataset, options);
});
    <script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/flot/0.8.2/jquery.flot.min.js"></script>
<div id="top5Alerts_canvas" style="height: 300px;"></div>

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