CODEWITHSUNDEEP
rvariables
user3651829
user3651829

Reputation: 821

Referencing incremental variables in r

I have a number of variables such as A1 A2 A3 A4 and B1 B2 B3 B4 and C1 C2 C3 C4. I am trying to cbind these together into a data frame but the number of variables for A, B and C varies each run. So here the maximum for each is 4, but other times it may be 10 for example.

df <- cbind(A1,A2,A3,A4,B1,B2,B3,B4,C1,C2,C3,C4)

df <- cbind(A1-Amax,B1-Bmax,C1-Cmax)

where max is a variable containing the max number (i.e 4 in this example).

Upvotes: 0

Views: 41

Answers (1)

akrun
akrun

Reputation: 887691

We can try with mget to get a list output

res <- do.call(cbind, mget(ls(pattern = "(A|B|C)\\d+")))

Suppose if we need it separate to calculate the "Aamax", "Bbmax" etc.

lstA <- mget(ls(pattern = "A\\d+"))
lstB <- mget(ls(pattern = "B\\d+"))
lstC <- mget(ls(pattern = "C\\d+"))

It is not clear what the "Aamax", "Bbmax" etc.

Upvotes: 1

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