[R] 2 significant digits

[carol white]

Hi,
How to represent a rounded number ending with 0 with 2-significant digits? If I have for ex, 0.8031 and I use signif or round with digits = 2, I'll get 0.8. If I use format, I get character type (even if I pass number as parameter) and if I convert with as.numeric, I'll lose one significant digit (0):

>  format(13.7, nsmall = 2)
[1] "13.70"
> as.numeric( format(13.7, nsmall = 2))
[1] 13.7


Regards,

Carol