How can I split a string like
x = "0.989(0.975)&0.964(0.937)&0.877(0.771)&&0.962(0.903)&0.971(0.867)&0.932(0.828)&&0.984(0.892)&0.937(0.869)&0.910(0.722)&&0.970(0.867)&0.942(0.811)&0.875(0.747)"
to get all numbers is a numeric vector like
y = c(0.989, 0.975, 0.964, 0.937, 0.877)
and so on.
I want to eliminate the parentheses, the "&" and "&&".
Use gsub with scan i.e. gsub to replace all the characters other than the . and digits with a single delimiter , and then with scan read it at once
out <- scan(text = gsub("[^.0-9]+", ",", x), what = numeric(),
sep=",", quiet = TRUE)
str(out)
#num [1:25] 0.989 0.975 0.964 0.937 0.877 0.771 0.962 0.903 0.971 0.867 ...
Another option using regmatches + as.numeric
as.numeric(regmatches(x, gregexpr("\\d+\\.\\d+", x))[[1]])
gives
[1] 0.989 0.975 0.964 0.937 0.877 0.771 0.962 0.903 0.971 0.867 0.932 0.828
[13] 0.984 0.892 0.937 0.869 0.910 0.722 0.970 0.867 0.942 0.811 0.875 0.747