Extjs Ext JS图表以错误/相反顺序显示Y轴标签

下面是我添加的屏幕截图对应的代码。如果参考代码开头的数据字段，您将看到Y轴上的标签显示错误

导入这些LIB，这与我在这个官方图表预览中发现的示例字符导入相同（zip文件在文章末尾，其中的条形图也是错误的！！！）：

---

一个已知的extjs 4.0.0错误！只需升级到4.1.x即可解决问题。

<link rel="stylesheet" type="text/css" href="../../resources/css/ext.css" />
<script type="text/javascript" src="../../ext-core.js"></script>
<script type="text/javascript" src="../../ext-chart.js"></script>
<script type="text/javascript" src="Bar3.js"></script>

<link rel="stylesheet" type="text/css" href="ext-all.css" />
<script type="text/javascript" src="ext-all.js"></script>
<script type="text/javascript" src="Bar3.js"></script>

Ext.onReady(function () {
var chart;

var store1 = new Ext.data.JsonStore({
fields:['name', 'data1'],
data: [
    {name:'Jan', data1: 2000},{name:'Feb', data1: 1800},
    {name:'Mar', data1: 1500},{name:'Apr', data1: 1000}
]});


chart = new Ext.chart.Chart({
    renderTo: Ext.get('graphDiv'),
    width: 600,
    height: 400,
    animate: true,
    shadow: true,
    store: store1,
    autoScroll: true,
    axes: [{
        type: 'Numeric',
        position: 'bottom',
        fields: ['data1'],
        label: {
           renderer: Ext.util.Format.numberRenderer('0,0')
        },
        title: 'Number of Hits'
    }, {
        type: 'Category',
        position: 'left',
        fields: ['name'],
        reverse: true,
        title: 'Month of the Year'
    }],
    series: [{
        type: 'bar',
        axis: 'bottom',
        highlight: true,
        label: {
            display: 'insideEnd',
            field: 'data1',
            renderer: Ext.util.Format.numberRenderer('0'),
            orientation: 'horizontal',
            color: '#333',
           'text-anchor': 'middle',
           contrast: true
        },
        xField: 'name',
        yField: 'data1'
    }]
});
});