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band 是特殊的 ordinal 比例尺,它的值域范围是一个连续的范围。

开始使用

band 比例尺经常用于柱形图的 x 通道。

const config = {
scale: {
x: {
type:'band',
/* 其他配置项 */
}
}
}

选项

属性描述类型默认值
domain设置定义域数组number[] | string[] | Date[][]
range设置数据映射的值域范围number[] | string[][0, 1]
unknown对于 undefined, NaN,null 空值,返回的数据anyundefined
round输出值去四舍五入booleanfalse
paddingInner设置比例尺的内部间距,在 [0, 1] 范围内number0
paddingOuter设置比例尺的外部间距,在 [0, 1] 范围内number0
padding同时设置 paddingInner 和 paddingOuternumber0
align对齐方式,在 [0, 1] 范围内number0.5
compare对定义域进行映射前的排序(a: string or number, b: string or number) => numberundefined
flex设置分配比例number[][]
|<------------------------------------------- range ------------------------------------------->|
| | | | | | |
|<--step*PO-->|<----bandWidth---->|<--step*PI-->|<----bandWidth---->|<--step*PI-->|<--step*PO-->|
| | ***************** | | ***************** | | |
| | ******* A ******* | | ******* B ******* | | |
| | ***************** | | ***************** | | |
| |<--------------step------------->| |
|-----------------------------------------------------------------------------------------------|

FAQ

  • 怎么设置柱形图,柱子之间的间距?
const config = {
scale: {
x: {
type: 'band',
padding: 0.5,
}
}
}