Reading a Text file with numbers into a vector for working-CodePudding

I am a turbo noob at R but I am looking to get my feet wet more with it. I have a text file with numbers that looks like:

1 2 10 15

(I can also produce these numbers with a comma and space if needed i.e 1, 2, 10, 15)

I am attempting to read these numbers as a numerical vector so I can work with them in basic calculations such as graphing, mean, etc. I attempted to use:

data <- scan(file="./logs_formatted/Packets_Delivered_Poll_Formatted.log", what="numeric")

However, this produces my numbers as characters like: "1" "2" "10" "15". This is fine but I cant seem to do any arithmetic with these characters. I basically just want to read this file and have a vector like:

c(1, 2, 10, 15)

How do I do this?

I have tried a few functions.

CodePudding user response：

When using scan(), the what argument should not be in quotations. It should be double(), character(), numeric(), etc. Since it's not specified correctly, I believe it's defaulting to double().

yourvector <- c(1, 2, 10, 15)
write(yourvector, "myfile.txt")
numvector <- scan(file = "myfile.txt", what = numeric(), quote = "")
numvector
#> [1]  1  2 10 15
class(numvector)
#> [1] "numeric"
class(numvector[[1]])
#> [1] "numeric"

CodePudding user response：

We may need numeric()

data <- scan(file="./logs_formatted/Packets_Delivered_Poll_Formatted.log", what=numeric(),
   quiet = TRUE)

-testing

scan(text = "1 2 10 15", what = numeric(), quiet = TRUE)
# [1]  1  2 10 15