r bind all dataframes with names matching string

Question

I have hundreds of dataframes whose names end either with "_flow" or "_rain", and I would like to rbind them all into two dataframes – one for flow data and one for rain data.

I guess the equivalent of this in Linux would be:

cat *_flow.csv >> flow.csv
cat *_rain.csv >> rain.csv

How do I do this in R?

Lots of ways to do this, but if you had imported all your flow dataframes into a list, you could combine them all row-wise with Reduce(flowList, rbind) — Bill O'Brien, Feb 19 '21 at 20:20

score 1 · Answer 1 · answered Feb 19 '21 at 19:24

1

Here is one way to find the files and rbind them:

files <- grep("_flow|_rain", dir(), value = TRUE)
  
library(vroom)

data <- vroom(files)

answered Feb 19 '21 at 19:24

stevec

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r bind all dataframes with names matching string

1 Answers1