format(.) Information
Usage
format.info(x)
Arguments
x
|
(numeric) vector; potential argument of
format(x,...).
|
Description
Information is returned on how format(x, digits =
options("digits")) would be formatted like.Value
An integer vector of length 3, say
r.
r[1]
|
width (number of characters) used for format(x)
|
r[2]
|
number of digits after decimal point.
|
r[3]
|
in 0:2; if >=1, exponential
representation would be used, with exponent length of r[3]+1.
|
Note
The result depends on the value of
options("digits").See Also
format, formatC.Examples
dd <- options("digits") ; options(digits = 7) #-- for the following
format.info(123) # 3 0 0
format.info(pi) # 8 6 0
format.info(1e8) # 5 0 1 - exponential "1e+08"
format.info(1e222)#6 0 2 - exponential "1e+222"
x <- pi*10^c(-10,-2,0:2,8,20)
names(x) <- formatC(x,w=1,dig=3,format="g")
cbind(sapply(x,format))
t(sapply(x, format.info))
# Reset old options:
options(dd)