如何在morris.js条形图上放置文本 [英] How to place a text on morris.js bar graph

问题描述

我有一个morris.js条形图.我想在该图的顶部放置count.我查看了 morris.js条形文档，找不到任何内容.

I have a morris.js bar graph. I want to place count on top of this graph. I looked into morris.js bar doc, could not find any.

悬停时，它应该显示value，但是在栏的顶部，它应该显示count.有没有办法做到这一点?类似于给定的图像

On hover it should display value but on top of bar it should display count. Is there a way to do that? something like the given image

这是我的代码

Morris.Bar ({
  element: 'bar-example',
  data: [
    {mapname: 's1', value: 10, count: 3},
    {mapname: 's2', value: 4, count: 4},
    {mapname: 's3', value: 12, count: 13}
  ],
  xkey: 'mapname',
  ykeys: ['value'],
  labels: ['No. of days'],
  barRatio: 0.4,
  xLabelAngle: 35,
  hideHover: 'auto',
  barColors: function (row, series, type) {
    console.log("--> "+row.label, series, type);
    if(row.label == "s1") return "#AD1D28";
    else if(row.label == "s2") return "#DEBB27";
    else if(row.label == "s3") return "#fec04c";
  }
});

这里是一个链接，您可以在其中进行测试.

Here is a link where you can test it.

推荐答案

我只是在寻找相同的解决方案时发现了这个问题.这是通过javascript/jquery完成的.

I just found this question whilst looking for the same solution. This is done in javascript / jquery.

我可以与您分享我正在通过尝试，错误和研究发现的代码.

I can share with you the code I am using which I discovered by trial, error and research.

function parseSVG(s) {
        var div= document.createElementNS('http://www.w3.org/1999/xhtml', 'div');
        div.innerHTML= '<svg xmlns="http://www.w3.org/2000/svg">'+s+'</svg>';
        var frag= document.createDocumentFragment();
        while (div.firstChild.firstChild)
            frag.appendChild(div.firstChild.firstChild);
        return frag;
    }

var theData = [
    {mapname: 's1', value: 10, count: 3},
    {mapname: 's2', value: 4, count: 4},
    {mapname: 's3', value: 12, count: 13}
  ]

Morris.Bar ({
element: 'bar-example',
data: theData,
  xkey: 'mapname',
  ykeys: ['value'],
  labels: ['No. of days'],
  barRatio: 0.4,
  xLabelAngle: 35,
  hideHover: 'auto',
  barColors: function (row, series, type) {
    console.log("--> "+row.label, series, type);
    if(row.label == "s1") return "#AD1D28";
    else if(row.label == "s2") return "#DEBB27";
    else if(row.label == "s3") return "#fec04c";
  }
});

var items = $("#bar-example").find( "svg" ).find("rect");
$.each(items,function(index,v){
    var value = theData[index].count;
    var newY = parseFloat( $(this).attr('y') - 20 );
    var halfWidth = parseFloat( $(this).attr('width') / 2 );
    var newX = parseFloat( $(this).attr('x') ) +  halfWidth;
    var output = '<text style="text-anchor: middle; font: 12px sans-serif;" x="'+newX+'" y="'+newY+'" text-anchor="middle" font="10px &quot;Arial&quot;" stroke="none" fill="#000000" font-size="12px" font-family="sans-serif" font-weight="normal" transform="matrix(1,0,0,1,0,6.875)"><tspan dy="3.75">'+value+'</tspan></text>';
    $("#bar-example").find( "svg" ).append(parseSVG(output));
});

输出看起来像这样.

但是您可以尝试的是在此处更改值

But what you can try, is change the values here

var newY = parseFloat( $(this).attr('y') - 20 );

类似

var halfHeight = parseFloat( $(this).attr('height') / 2 );
var newY = parseFloat( $(this).attr('y') - halfHeight );

此更改未经测试，但将是一个很好的起点.

This change is untested, but will act as a good starting point.

此致:)

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