I have a data frame which is the output obtained after using aggregate function,
>df
Type mean sd
1 A 76.088250 3.233297
2 B 78.403967 4.144146
3 C 102.855533 44.775766
The second and the third columns are stored as a matrix. For example,
>df[2]
mean sd
1 76.088250 3.233297
2 78.403967 4.144146
3 102.855533 44.775766
I want to merge the first and second column of df[2] with a symbol in between, ie the desired output is
mean ± sd
1 76.088250 ± 3.233297
2 78.403967 ± 4.144146
3 102.855533 ± 44.775766
To do this, I want to access the first column and the second column of df[2]. Probably a very simple question, but I am not able to find a way to do this. I tried the following,
Matrix <- df[2]
print(Matrix[,1])
The output is
mean sd
[1,] 76.08825 3.233297
[2,] 78.40397 4.144146
[3,] 102.85553 44.775766
Expected output,
mean
1 76.08825
2 78.40397
3 102.85553
I would like to ask for help. Excuse me for the naive question, I'm a beginner in R.
You need to call the matrix and not the dataframe.. ie df[,2]
will drop the list attribute:
You are looking for:
paste(df[,2][,1],intToUtf8(177),df[,2][,2])
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