• 
• 
• 参考手册
• 
• 数学 [⚠️ need proofread]
• 
• Cancel

转到官方文档（英文）

cancel元素

元素函数可用set和show规则自定义样式。

0.3.0起可用

Displays a diagonal line over a part of an equation.

This is commonly used to show the elimination of a term.

Example

Here, we can simplify:
$ (a dot b dot cancel(x)) /
    cancel(x) $

参数

参数是传给函数的输入，写在函数名后的括号中。

body

content

必需参数

必需参数在调用函数时必须传入。

位置参数

位置参数按顺序传入，不带参数名。

The content over which the line should be placed.

length

relative

可用set规则

可用set规则设置参数，更改后续调用时的默认值。

默认值：100% + 0.3em

The length of the line, relative to the length of the diagonal spanning the whole element being “cancelled”. A value of 100% would then have the line span precisely the element’s diagonal.

展开示例

$ a + cancel(x, length: #200%)
    - cancel(x, length: #200%) $

inverted

bool

可用set规则

可用set规则设置参数，更改后续调用时的默认值。

默认值：false

Whether the cancel line should be inverted (flipped along the y-axis). For the default angle setting, inverted means the cancel line points to the top left instead of top right.

展开示例

$ (a cancel((b + c), inverted: #true)) /
    cancel(b + c, inverted: #true) $

cross

bool

可用set规则

可用set规则设置参数，更改后续调用时的默认值。

默认值：false

Whether two opposing cancel lines should be drawn, forming a cross over the element. Overrides inverted.

展开示例

$ cancel(Pi, cross: #true) $

angle

auto or angle or function

可用set规则

可用set规则设置参数，更改后续调用时的默认值。

默认值：auto

How much to rotate the cancel line.

• If given an angle, the line is rotated by that angle clockwise with respect to the y-axis.
• If auto, the line assumes the default angle; that is, along the rising diagonal of the content box.
• If given a function angle => angle, the line is rotated, with respect to the y-axis, by the angle returned by that function. The function receives the default angle as its input.

展开示例

$ cancel(Pi)
  cancel(Pi, angle: #0deg)
  cancel(Pi, angle: #45deg)
  cancel(Pi, angle: #90deg)
  cancel(1/(1+x), angle: #(a => a + 45deg))
  cancel(1/(1+x), angle: #(a => a + 90deg)) $

stroke

length or color or gradient or stroke or tiling or dictionary

可用set规则

可用set规则设置参数，更改后续调用时的默认值。

默认值：0.05em

How to stroke the cancel line.

展开示例

$ cancel(
  sum x,
  stroke: #(
    paint: red,
    thickness: 1.5pt,
    dash: "dashed",
  ),
) $

background

bool

可用set规则

可用set规则设置参数，更改后续调用时的默认值。

默认值：false

Whether the line is placed behind the content.

展开示例

#set math.cancel(stroke: red + 2pt)
$ cancel("behind", background: #true) \
  cancel("in front", background: #false) $

转到官方文档（英文）

Binomial上一页

Cases下一页