Define how NCA parameters are summarized.

## Usage

```
PKNCA.set.summary(
name,
description,
point,
spread,
rounding = list(signif = 3),
reset = FALSE
)
```

## Arguments

- name
The parameter name or a vector of parameter names. It must have already been defined (see

`add.interval.col()`

).- description
A single-line description of the summary

- point
The function to calculate the point estimate for the summary. The function will be called as

`point(x)`

and must return a scalar value (typically a number, NA, or a string).- spread
Optional. The function to calculate the spread (or variability). The function will be called as

`spread(x)`

and must return a scalar or two-long vector (typically a number, NA, or a string).- rounding
Instructions for how to round the value of point and spread. It may either be a list or a function. If it is a list, then it must have a single entry with a name of either "signif" or "round" and a value of the digits to round. If a function, it is expected to return a scalar number or character string with the correct results for an input of either a scalar or a two-long vector.

- reset
Reset all the summary instructions

## See also

Other PKNCA calculation and summary settings:
`PKNCA.choose.option()`

,
`PKNCA.options()`

## Examples

```
if (FALSE) { # \dontrun{
PKNCA.set.summary(
name="half.life",
description="arithmetic mean and standard deviation",
point=business.mean,
spread=business.sd,
rounding=list(signif=3)
)
} # }
```