Converts a numeric argument into a string that has been rounded to a
significant figure-like number. Scientific notation output
is avoided, however, and additional significant figures may be displayed for
large numbers. For example, if the number of significant digits
requested is 2, 123 will be displayed (rather than 120 or 1.2x10^2).

```
style_sigfig(
x,
digits = 2,
scale = 1,
big.mark = NULL,
decimal.mark = NULL,
...
)
```

## Arguments

- x
Numeric vector

- digits
Integer specifying the minimum number of significant
digits to display

- scale
A scaling factor: x will be multiplied by scale before formatting.

- big.mark
Character used between every 3 digits to separate
hundreds/thousands/millions/etc.
Default is `","`

, except when `decimal.mark = ","`

when the default is a space.

- decimal.mark
The character to be used to indicate the numeric decimal point.
Default is `"."`

or `getOption("OutDec")`

- ...
Other arguments passed on to `base::format()`

## Value

A character vector of styled numbers

## Details

Scientific notation output is avoided.

If 2 significant figures are requested, the number is rounded to no more than 2 decimal places.
For example, a number will be rounded to 2 decimals places when `abs(x) < 1`

,
1 decimal place when `abs(x) >= 1 & abs(x) < 10`

,
and to the nearest integer when `abs(x) >= 10`

.

Additional significant figures
may be displayed for large numbers. For example, if the number of
significant digits requested is 2,
123 will be displayed (rather than 120 or 1.2x10^2).

## Examples

```
c(0.123, 0.9, 1.1234, 12.345, -0.123, -0.9, -1.1234, -132.345, NA, -0.001) %>%
style_sigfig()
#> [1] "0.12" "0.90" "1.1" "12" "-0.12" "-0.90" "-1.1" "-132" NA
#> [10] "0.00"
```