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区间图为每个数据点取一对值(低值和高值)以可视化一系列值而不是单个值。
区间图表从最小值开始,以最大值结束,突出显示类别中最高值和最低值之间的差异。
添加图表组件并切换图表类型。三种区间图表的用法类似,文中以区间面积图为例介绍。
将“低温”或者“ 高温 ”拖拽至数据字段。因为绑定后下一步还要修改字段数值,所以这里绑定任意字段都可以。
将“ 月份”拖拽至分类中。
单击在数据字段绑定的字段,然后在属性设置中修改其数值。将lower 值绑定为“ 低温 ”,将upper值绑定为“ 高温 ”。
单击设计器上方的预览按钮,预览报表。可以看到区间面积的基本形状已经绘制出来,接下来主要是对外观进行调整。
比如调整曲线的类型。
设置图表标题。
选中图表的标题区域,然后输入标题。
也可以进一步修改坐标轴名称等。
type=info
使用区间图表的关键步骤在于数据绑定环节,绑定“lower”和“upper”作为数值的区间。