r - Combine two data frames of the same size one column after each other -


i have 2 datasets both of same size [132,450000]. 1 values , p-values corresponding values. want combine 2 datasets have 1 large dataframe [264,450000] column values followed column corresponding p-values. rownames same , column names like: sample1 in df1 , sample1_pval in df2

for example have 2 dataframes likes this

> df1     x y cg1 1 cg2 2 b cg3 3 c cg4 4 d cg5 5 e  > df2      x_pval y_pval  cg1   6      f cg2   7      g cg3   8      h cg4   9      cg5  10      j

and want merge them order: 1st column of df1 followed 1st column of df2 followed 2nd column of df1 followed 2nd column of df2 etc etc.....

so this:

> df            x       x_pval    y        y_pval cg1        1        6               f cg2        2        7        b        g cg3        3        8        c        h cg4        4        9        d        cg5        5       10        e        j

i want keep columnnames rownames can add later since same in both dataframes. since i'm working large dataset dont want type in columns , use "cbind". , couldn't find code "merge" 1 column each dataset @ time......

is there formula or package this?

anyone can me out?

another option concatenate sequence of columns of both datasets, order , cbind

cbind(df1, df2)[order(c(seq_along(df1), seq_along(df2)))] #    x x_pval y y_pval #cg1 1      6      f #cg2 2      7 b      g #cg3 3      8 c      h #cg4 4      9 d      #cg5 5     10 e      j

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