echarts3相关的各种定制化

  在我刚把项目中的echarts从2.x版本升级到echarts3.x,折腾老久,终于交付了项目的时候,echarts4又出来了,先不管,还是把我echarts3.x遇到的和formatter相关的问题总结一下。

  1. 第一种情况是折线图或者柱状图的纵坐标:当纵坐标都是0的时候,此时echarts默认的纵坐标是从0到1等分,但是实际场景中可能我们的纵坐标永远是整数,这时候就有点不妥了,如图所示。此时的option为:

option = {
    xAxis: {
        type: 'category',
        data: ['Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat', 'Sun']
    },
    yAxis: {
        type: 'value'
    },
    series: [{
        data: [0, 0, 0, 0, 0, 0, 0],
        type: 'line'
    }]
};

 

                                                                                            

     此时需要用到的是echarts的minInterval和max属性,设置纵坐标的间隔为单位长度1,且最大值为5,当然也要兼容值不是全为0的情况。具体配置如下。若要只是如右上图所示,加个单位的话,emmm,formatter加个单位。

yAxis: {
                axisLine: {
                    show: false
                },
                axisTick: {
                    show: false
                },
                // axisLabel: {
                //     formatter: '{value} kg'
                // },
                minInterval: 1,
                max: Math.max.apply(null,value)<=5?5:null
            },

  2.第二种情况是折线图或柱状图的横坐标:①横坐标过长可以设置成截取前几个字符再加上...的形式,如果不是超级长,可以设置成几个字符换一行;②当浏览器缩放时不能放下所有的横坐标时。如图所示。此时option配置如下:

option = {
    xAxis: {
        type: 'category',
        axisLabel: {
            margin: 2,
            show: true,
            interval: 0
        },
        data: ['超级长的横坐标超级长的横坐标超级长的横坐标超级长的横坐标', '超级长的横坐标超级长的横坐标超级长的横坐标超级长的横坐标2', '超级长的横坐标超级长的横坐标超级长的横坐标超级长的横坐标3', '超级长的横坐标超级长的横坐标超级长的横坐标超级长的横坐标4', '超级长的横坐标超级长的横坐标超级长的横坐标超级长的横坐标5', '超级长的横坐标超级长的横坐标超级长的横坐标超级长的横坐标6', '超级长的横坐标超级长的横坐标超级长的横坐标超级长的横坐标7']
    },
    yAxis: {
        axisLine: {
            show: false
        },
        axisTick: {
            show: false
        },
        // axisLabel: {
        //     formatter: '{value} kg'
        // },
        minInterval: 1,
        max: Math.max.apply(null,value)<=5?5:null
            },
    series: [{
        data: [0, 0, 0, 0, 0, 0, 0],
        type: 'line'
    }]
};

                                                                                            

  此时,需要用到xAxis的axisLabel的formatter,其实后面的几种情况都大同小异,找到对应的要格式化的文本,然后使用formatter,然后是处理字节还是处理字符长度按需选择嘛,效果如右上图,option修改部分如下:

axisLabel: {
            show: true,
            //interval: 0
            formatter:function(val){
                        var re = '';
                        var length = val.length;
                        var bytes = 0;
                        for (var i = 0; i < length; i++) {
                            var code = val.charCodeAt(i);
                            bytes += code < 256 ? 1 : 2;
                            if (bytes > 16) {
                                re += '...';
                                break;
                            } else {
                                re += val[i];
                            }
                        }
                        return re;
                    }
        },

  3.当折线图和柱状图的横纵坐标都合格的情况下,比如横坐标很略以后,如果还是想看完整的横坐标内容怎么办?这时候就使用到tooltip了,此处先讨论全局的tooltip,如图所示,超出画布的tooltip,瞬间被测试部的小姐姐提单了

 1 option = {
 2     tooltip: {
 3         trigger: 'axis',
 4         axisPointer: {
 5             type: 'shadow'
 6         },
 7 
 8         show: true,
 9         borderColor: '#ccc',
10         borderWidth: 1
11     },
12     xAxis: {
13         type: 'category',
14         
15         axisLabel: {
16             show: true,
17             //interval: 0
18             formatter:function(val){
19                         var re = '';
20                         var length = val.length;
21                         var bytes = 0;
22                         for (var i = 0; i < length; i++) {
23                             var code = val.charCodeAt(i);
24                             bytes += code < 256 ? 1 : 2;
25                             if (bytes > 16) {
26                                 re += '...';
27                                 break;
28                             } else {
29                                 re += val[i];
30                             }
31                         }
32                         return re;
33                     }
34         },
35         data: ['超级长的横坐标超级长的横坐标超级长的横坐标超级长的横坐标', '超级长的横坐标超级长的横坐标超级长的横坐标超级长的横坐标2', '超级长的横坐标超级长的横坐标超级长的横坐标超级长的横坐标3', '超级长的横坐标超级长的横坐标超级长的横坐标超级长的横坐标4', '超级长的横坐标超级长的横坐标超级长的横坐标超级长的横坐标5', '超级长的横坐标超级长的横坐标超级长的横坐标超级长的横坐标6', '超级长的横坐标超级长的横坐标超级长的横坐标超级长的横坐标7']
36     },
37     yAxis: {
38         axisLine: {
39             show: false
40         },
41         axisTick: {
42             show: false
43         },
44         // axisLabel: {
45         //     formatter: '{value} kg'
46         // },
47         minInterval: 1,
48         max: Math.max.apply(null,value)<=5?5:null
49             },
50     series: [{
51         data: [0, 0, 0, 0, 0, 0, 0],
52         type: 'line'
53     }]
54 };
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  此时使用到tooltip的position属性,定位到角落里,不设置也行,跟随鼠标移动tooltip,在formatter函数里设置换行,啊哈哈,小圆点是宝宝用css做的,巨丑,忍受一下哈,配置参数如下:

 1 tooltip: {
 2         trigger: 'axis',
 3         axisPointer: {
 4         },
 5         borderWidth: 1,
 6         borderColor: '#ccc',
 7         padding: 10,
 8         textStyle: {
 9             color: '#fff'
10         },
11         position: function (pos, params, el, elRect, size) {
12             var obj = {top: 10};
13             obj[['left', 'right'][+(pos[0] < size.viewSize[0] / 2)]] = 30;
14             return obj;
15         },
16         extraCssText: 'width: 170px',
17         formatter: function(param){
18             param = param[0];
19             var re = '';
20             var length = param.name.length;
21             var bytes = 0;
22             for (var i = 0; i < length; i++) {
23                 var code = param.name.charCodeAt(i);
24                 bytes += code < 256 ? 1 : 2;
25                 if (bytes && bytes % 20 === 0) {
26                     re += '<br />';
27                 } else {
28                     re += param.name[i];
29                 }
30             }
31             return [
32                 re + '<br/>',
33                 '<span style="width:10px;height:10px;border-radius:5px;background-color: #158cba;display:inline-block;margin-right:5px;"></span>' + param.data + '<br/>'
34             ].join('');
35         }
36     },
View Code

  4.第四种情况是用在饼图中,legend里设置图例的显示和ltooltip,以及series里label的formatter,伟岸的UI给我设计了南丁格尔玫瑰图来显示数据TOP10,对,设计稿里巨漂亮,但那也是在完美的数据情况下啊!!测试部的小姐姐们都是从零开始建数据的哇,导致各种奇葩的图表出来。暴走的宝宝配置了如下的南丁格尔玫瑰图数据:

 1 option = {
 2     tooltip : {
 3         trigger: 'item',
 4         formatter: "{a} <br/>{b} : {c} ({d}%)"
 5     },
 6     legend: {
 7         orient: 'vertical',
 8         left:'0',
 9         itemGap:5,
10         icon: 'circle',
11         data:['rose1rose1rose1rose1rose1rose1rose1rose1rose1rose1rose1rose1rose1rose1rose1rose1rose1rose1rose1rose1rose1rose1rose1rose1rose1rose1rose1rose1','rose2rose2rose2rose2rose2rose2','rose3rose3rose3rose3rose3','rose4rose4rose4rose4rose4','rose5','rose6','rose7','rose8']
12     },
13     color: ['rgba(13,136,252,1)', 'rgba(13,136,252,.9)', 'rgba(13,136,252,.8)', 'rgba(13,136,252,.7)', 'rgba(13,136,252,.6)', 'rgba(13,136,252,.5)', 'rgba(13,136,252,.4)', 'rgba(13,136,252,.3)', 'rgba(13,136,252,.2)', 'rgba(13,136,252,.1)'],
14     calculable : true,
15     series : [
16         {
17             name:'面积模式',
18             type:'pie',
19             radius : [0, 110],
20             center : ['50%', '50%'],
21             roseType : 'area',
22             label: {
23                 normal: {
24                     show: false,
25                     // formatter:function(params){
26                     //     return params.name.length > 5 ? params.name.slice(0,5) + '...' : params.name;
27                     // }
28                 },
29                 emphasis: {
30                     show: true
31                 }
32             },
33             data:[
34                 {value:5, name:'rose1rose1rose1rose1rose1rose1rose1rose1rose1rose1rose1rose1rose1rose1rose1rose1rose1rose1rose1rose1rose1rose1rose1rose1rose1rose1rose1rose1'},
35                 {value:10, name:'rose2rose2rose2rose2rose2rose2'},
36                 {value:15, name:'rose3rose3rose3rose3rose3'},
37                 {value:20, name:'rose4rose4rose4rose4rose4'},
38                 {value:25, name:'rose5'},
39                 {value:30, name:'rose6'},
40                 {value:35, name:'rose7'},
41                 {value:40, name:'rose8'}
42             ]
43         }
44     ]
45 };
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大同小异的formatter,但是,emmmm,记得legend也是 有tooltip和formatter的。至此,宝宝的定制化结束啦,不知道为啥,一点都不想再做这个了,orz....

 1 var dataOne = ['rose1rose1rose1rose1rose1rose1rose1rose1rose1rose1rose1rose1rose1rose1rose1rose1rose1rose1rose1rose1rose1rose1rose1rose1rose1rose1rose1rose1','rose2rose2rose2rose2rose2rose2','rose3rose3rose3rose3rose3','rose4rose4rose4rose4rose4','rose5','rose6','rose7','rose8'];
 2 var dataTwo = [5,10,15,20,25,30,35,40];
 3 option = {
 4     tooltip: {
 5                 trigger: 'item',
 6                 //formatter: "{a} <br/>{b} : {c} ({d}%)"
 7                 formatter: function(params){
 8                     //console.log(name);
 9                     var re = '';
10                     var length = params.name.length;
11                     for (var i = 0, j = 1; i < length; i++,j++) {
12                         if (j && j % 20 === 0) {
13                             re += '<br />';
14                         } else {
15                             re += params.name[i];
16                         }
17                     }
18                     if (params.data.show) {
19                         return "无";
20                     }
21                     return params.seriesName+'<br/>'+'图例:<br/>'+re+'<br/>'+'数量:<br/>'+params.value;
22                 }
23             },
24     legend: {
25         orient: 'vertical',
26         left:'0',
27         itemGap:5,
28         icon: 'circle',
29         
30         data:['rose1rose1rose1rose1rose1rose1rose1rose1rose1rose1rose1rose1rose1rose1rose1rose1rose1rose1rose1rose1rose1rose1rose1rose1rose1rose1rose1rose1','rose2rose2rose2rose2rose2rose2','rose3rose3rose3rose3rose3','rose4rose4rose4rose4rose4','rose5','rose6','rose7','rose8'],
31     
32         tooltip: {
33             show: true,
34             formatter: function (params) {
35                 var re = '';
36                 var length = params.name.length;
37                 var bytes = 0;
38                 for (var i = 0; i < length; i++) {
39                     var code = params.name.charCodeAt(i);
40                     bytes += code < 256 ? 1 : 2;
41                     if (bytes && bytes % 20 === 0) {
42                         re += '<br />';
43                     } else {
44                         re += params.name[i];
45                     }
46                 }
47                 return re;
48             },
49         },
50         formatter: function(name) {
51             var index = 0;
52             dataOne.forEach(function(value,i){
53                 if(value == name){
54                     index = i;
55                     name = name.length > 8 ? name.slice(0,8) + '...' : name;
56                 }
57             });
58             return name + " - " + dataTwo[index];
59         }
60     },
61     color: ['rgba(13,136,252,1)', 'rgba(13,136,252,.9)', 'rgba(13,136,252,.8)', 'rgba(13,136,252,.7)', 'rgba(13,136,252,.6)', 'rgba(13,136,252,.5)', 'rgba(13,136,252,.4)', 'rgba(13,136,252,.3)', 'rgba(13,136,252,.2)', 'rgba(13,136,252,.1)'],
62     calculable : true,
63     series : [
64         {
65             name:'面积模式',
66             type:'pie',
67             radius : [0, 110],
68             center : ['50%', '50%'],
69             roseType : 'area',
70             label: {
71                 normal: {
72                     show: false,
73                     formatter:function(params){
74                         return params.name.length > 5 ? params.name.slice(0,5) + '...' : params.name;
75                     }
76                 },
77                 emphasis: {
78                     show: true
79                 }
80             },
81             data:[
82                 {value:5, name:'rose1rose1rose1rose1rose1rose1rose1rose1rose1rose1rose1rose1rose1rose1rose1rose1rose1rose1rose1rose1rose1rose1rose1rose1rose1rose1rose1rose1'},
83                 {value:10, name:'rose2rose2rose2rose2rose2rose2'},
84                 {value:15, name:'rose3rose3rose3rose3rose3'},
85                 {value:20, name:'rose4rose4rose4rose4rose4'},
86                 {value:25, name:'rose5'},
87                 {value:30, name:'rose6'},
88                 {value:35, name:'rose7'},
89                 {value:40, name:'rose8'}
90             ]
91         }
92     ]
93 };
View Code

 

posted @ 2018-02-03 15:13  mini_fan  阅读(1808)  评论(0编辑  收藏  举报