使用Rickshaw JS库在X轴上显示自定义标签

Question

我有一个成对的数据集,{x: someValue, y: count}其中someValue是一周中的某一天,形式为(1..7),其中1是"星期日".在Ricskshaw图表上,我想分别在X轴上显示(Mon,Tue ..etc).我怎么做？

目前我做了:

var ticksTreatment = 'glow';
var xAxisQPerDay = new Rickshaw.Graph.Axis.Time( {
          graph: graphQPerDay,
          ticksTreatment: ticksTreatment
      } );
xAxisQPerDay.render();

但这当然给了我默认值1s,2s,3s等......

Answer 1

这样的事情应该有效:

var xAxisQPerDay = new Rickshaw.Graph.Axis.X({
    graph: graphQPerDay,
    tickFormat: function(x) {
        switch (x) {
            case 1: return 'Mon';
            case 2: return 'Tue';
            case 3: return 'Wed';
            case 4: return 'Thu';
            case 5: return 'Fri';
            case 6: return 'Sat';
            case 7: return 'Sun';
        }
    }
});

xAxisQPerDay.render();

如果您在侧面构建了一个地图来缓存字段数据,那么这是一种更加动态的方法.

var days = ['Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat', 'Sun'];
var xAxisQPerDay = new Rickshaw.Graph.Axis.X({
    graph: graphQPerDay,
    tickFormat: function(x) {
        return days[x];
    }
});

xAxisQPerDay.render();

要么

var days = { 0: 'Mon', 1: 'Tue', 2: 'Wed', 3: 'Thu', 4: 'Fri', 5: 'Sat', 6: 'Sun' };
var xAxisQPerDay = new Rickshaw.Graph.Axis.X({
    graph: graphQPerDay,
    tickFormat: function(x) {
        return days[x];
    }
});

xAxisQPerDay.render();