'Extracting column index as a list
I have a data frame of 12 columns. Columns 1-3 are character data, columns 4-10 are numerics. I want to create a list of all numeric columns, so I get c(4:10) for use in a loop.
Solution 1:[1]
If we want to find the index of numeric columns automatically, loop over the data.frame with sapply, check whether it is numeric (is.numeric) and wrap with which
indx <- which(sapply(df1, is.numeric))
Sources
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Source: Stack Overflow
| Solution | Source |
|---|---|
| Solution 1 | akrun |