用于x轴的Dojo图表选择性标签&网格

Dojo Chart selective labels for x-axis & grid

本文关键字：标签 amp 网格 选择性 轴的 Dojo 用于      更新时间：2023-09-26

我需要创建一个dojo图表

http://codebins.com/bin/4ldqp8z/1

在上面的链接中，我的图表有类似的x轴标签

当前x轴：11:am，12:40pm，2:20pm&下午4点

对于相同的标签，我有网格线。

现在的要求是我只需要3个标签

所需x轴：上午10点，下午1点&下午4点

图表显示了晚上9:30到下午4点之间的数据，间隔10分钟。

这是工作样本：-http://codebins.com/bin/4ldqp8z/1

这是代码：-你需要在http 上运行它

<html>
    <head>
        <meta content="text/html; charset=UTF-8" http-equiv="content-type">
        <title>Code Bins</title>
                            <script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/dojo/1.7.2/dojo/dojo.js" ></script>

    </head>
    <body Body Params>
        <div id="chart1" style="width:300px;height:200px">
</div>    </body>
                        <script type="text/javascript">
                    require(["dojo/_base/declare", "dojo/dom-style", "dojo/ready", "dojox/charting/Chart",  "dojox/charting/action2d/PlotAction", "dojox/charting/axis2d/Default", "dojox/charting/plot2d/Columns", "dojox/charting/plot2d/Lines", "dojox/charting/plot2d/Grid"], function(declare, domStyle, ready, Chart, PlotAction, Default, Columns, Lines, Grid) {
    ready(function() {
        var chart = new Chart("chart1")
            .addAxis("y", { vertical: true, 
                fixLower: "major", 
                fixUpper: "major", 
                leftBottom: false,
                majorTicks:false,
                minorTicks:false,
                stroke: {color:"#FFF",width:0},
                majorTick:{length:0}})
            .addAxis("x", {
                labels: labels, /* Lables are coming from here*/
                majorTicks:false,
                majorTick:{length:4,color:"#FFFFFF"},
                majorLabels:true,
                majorTickStep:10,
                minorTicks:false,
                max:40,
                stroke: {color:"#CFCFCF",width:"1"}})
            .addSeries("y", close, {  fill: "#EBEBEB"})
            .addPlot("Grid", {
                    type: "Grid",
                    markers: true
                });
        chart.render();
    });
});
var close = [];
for (var i = 0; i < 40; i++) { close.push(parseInt((Math.random() * 100) + 1200)); }
var labels = [{value: 1,text: "9:30am"},
{value: 2,text: "9:40am"},{value: 3,text: "9:50am"},{value: 4,text: "10am"},{value: 5,text: "10:10am"},{value: 6,text: "10:20am"},{value: 7,text: "10:30am"},{value: 8,text: "10:40am"},{value: 9,text: "10:50am"},{value: 10,text: "11am"},{value: 11,text: "11:10am"},{value: 12,text: "11:20am"},{value: 13,text: "11:30am"},{value: 14,text: "11:40am"},{value: 15,text: "11:50am"},{value: 16,text: "12pm"},{value: 17,text: "12:10pm"},{value: 18,text: "12:20pm"},{value: 19,text: "12:30pm"},{value: 20,text: "12:40pm"},{value: 21,text: "12:50pm"},{value: 22,text: "1pm"},{value: 23,text: "1:10pm"},{value: 24,text: "1:20pm"},{value: 25,text: "1:30pm"},{value: 26,text: "1:40pm"},{value: 27,text: "1:50pm"},{value: 28,text: "2pm"},{value: 29,text: "2:10pm"},{value: 30,text: "2:20pm"},{value: 31,text: "2:30pm"},{value: 32,text: "2:40pm"},{value: 33,text: "2:50pm"},{value: 34,text: "3pm"},{value: 35,text: "3:10pm"},{value: 36,text: "3:20pm"},{value: 37,text: "3:30pm"},{value: 38,text: "3:40pm"},{value: 39,text: "3:50pm"},{value: 40,text: "4pm"}];
// BOTTOM OF PAGE
                </script>

</html>

您的X标签明确地将主要刻度步长设置为10。根据你的标签判断，应该是18:1是10分钟，6是1小时，18是你想要的3小时。所以这部分很简单。问题是步数是从0开始计算的，0是上午9:20。你应该从另一个数字开始。一种可能的方法是让上午10点为零。这意味着你应该把你的数据和标签移回来，就像这样：

var labels = [
  {value: -3,text: "9:30am"},
  {value: -2,text: "9:40am"},
  {value: -1,text: "9:50am"},
  {value:  0,text: "10am"},
  {value:  1,text: "10:10am"},
  {value:  2,text: "10:20am"}
  // and so on
];

或者从早上7点开始，就像这样：

var labels = [
  // we have no data for 7am, so we skip labels too
  {value: 15,text: "9:30am"},
  {value: 16,text: "9:40am"},
  {value: 17,text: "9:50am"},
  {value: 18,text: "10am"},
  {value: 19,text: "10:10am"},
  {value: 20,text: "10:20am"}
  // and so on
];

试着用不同的方式映射你的序数，你就能达到想要的效果。

附言：同样的方式，你可以控制轻微和微小的蜱虫。

找到解决方案http://codebins.com/bin/4ldqp8z/2

扩展轴2d和它的一些非常简单。不需要计算任何东西的步长。只要给你想给的任何标签。

dojo.provide("myDojo.myAxis");
dojo.declare("myDojo.myAxis", dojox.charting.axis2d.Default, {
        calculate: function(min, max, span, labels){
            this.inherited(arguments);
            this.ticks.major= [{ value:4, label:"10am"},{ value:22, label:"1pm"},{ value:40, label:"4pm"}]
            return this;
        }
    });
      dojox.charting.axis2d.myAxis = myDojo.myAxis;

添加轴时添加类型

.addAxis("x", {
                labels: labels, /* Lables are coming from here*/
                majorTicks:false,
                majorTick:{length:4,color:"#FFFFFF"},
                majorLabels:true,
                majorTickStep:10,
                minorTicks:false,
                max:40,
                type:"myAxis",
                stroke: {color:"#CFCFCF",width:"1"}})
相关文章：