cancelElementElementElement functions can be customized with set and show rules.
Element
Element functions can be customized with
set and show rules.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) $
ParameterParameterParameters are input values for functions. Specify them in parentheses after the function name.
Parameter
Parameters are input values for functions. Specify them in parentheses after the function name.
bodyRequiredRequiredRequired parameters must be specified when calling the function.PositionalPositionalPositional parameters can be set by specifying them in order, omitting the parameter name.
Required
Required
Required parameters must be specified when calling the function.
Positional
Positional
Positional parameters can be set by specifying them in order, omitting the parameter name.
The content over which the line should be placed.
lengthSettableSettableSettable parameters can be set using the set rule, changing the default value used thereafter.
Settable
Settable
Settable parameters can be set using the
set rule, changing the default value used thereafter.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.
Default value: 100% + 3pt
Show example
$ a + cancel(x, length: #200%)
- cancel(x, length: #200%) $
invertedSettableSettableSettable parameters can be set using the set rule, changing the default value used thereafter.
Settable
Settable
Settable parameters can be set using the
set rule, changing the default value used thereafter.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.
Default value: false
Show example
$ (a cancel((b + c), inverted: #true)) /
cancel(b + c, inverted: #true) $
crossSettableSettableSettable parameters can be set using the set rule, changing the default value used thereafter.
Settable
Settable
Settable parameters can be set using the
set rule, changing the default value used thereafter.Whether two opposing cancel lines should be drawn, forming a cross over
the element. Overrides inverted.
Default value: false
Show example
$ cancel(Pi, cross: #true) $
angle
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.
Default value: auto
Show example
$ 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)) $
