[求助]微信小程序使用Echart时,视觉映射组件visualMap显示不全

1、在开发微信小程序时使用Echart,由于visualMap分类较多,在orient: 'horizontal'时,宽度不够,显示不全;
2、visualMap: {
type: 'piecewise',
orient: 'horizontal',
itemWidth: 7,
itemHeight: 7,
textGap: 3,
itemGap: 3,
align: "bottom",
pieces: [{
max: 1.8,
label: '泡沫之巅',
color: '#FF0000',
}, {
min: 1.8,
max: 2,
label: '高估阶段',
color: '#FF6347'
}, {
min: 2,
max: 2.2,
label: '中枢偏高',
color: '#FFA500'
}, {
min: 2.2,
max: 2.4,
label: '中枢估值',
color: '#FFFF00'
}, {
min: 2.4,
max: 2.6,
label: '中枢偏低',
color: '#F0E68C'
}, {
min: 2.6,
max: 2.8,
label: '低估区域',
color: '#9ACD32'
}, {
min: 2.8,
label: '严重低估',
color: '#008000'
}]
}
3、图片说明