[R] Merge and replace data

[roslinazairimah zakaria]

Hi all,

I have these data

x1 <- c(116,0,115,137,127,0,0)
x2 <- c(0,159,0,0,0,159,127)

I want : xx <- c(116,115,137,127,159, 127)

I would like to merge these data into one column. Whenever the data is '0'
it will be replaced by the value in the column which is non zero..
I tried append and merge but fail to get what I want.

-- 
*Roslina Zakaria*

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