About concatenating strings

Sorry for the emails. I just checked and the problem is still there. Is
there a proper way to reformat the decimal places, such as three or four
decimal places? Thanks.

If maintain four decimal places, the numbers are: 1.2000, 1.3100, 1.4000,
etc.

On Thu, Jan 5, 2017 at 10:46 PM, lily li <chocold12 at gmail.com> wrote:

I found that the last column is the digits 2.00, so the problem is solved.

On Thu, Jan 5, 2017 at 10:42 PM, lily li <chocold12 at gmail.com> wrote:

Hi R users,

I'm trying to concatenate two strings, while each string has numbers.
For example, strings1 = c(1.2, 1.31, 1.4, 1.51, etc), strings2= c(2.1,
2.22, 2.3, 2.44, etc). I want to have all decimals for the two strings,
such as: strings1= c(1.20, 1.31, 1.40, 1.51, etc), string2 = c(2.10, 2.22,
2.30, 2.44, etc).
After concatenating, they become c(1.20--2.10, 1.31--2.22, 1.40--2.30,
1.51--2.44, etc)
I use the code below, but after digits=2 in the parentheses, the length
of each string has one more. What is the problem and how to do it another
way? Thanks.

cons  = paste(c(strings1, digits=2), c(strings2, digits=2), sep='-')

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