| format.info {base} | R Documentation |
Information is returned on how format(x, digits =
options("digits")) would be formatted like.
format.info(x)
x |
(numeric) vector; potential argument of
format(x,...). |
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. |
The result depends on the value of
options("digits").
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)