Select Data Frame Rows based on Values in Vector in R | element, filter [dplyr] & setDT [data.table]

R code of this video:

x2 = letters[1:10])
data # Return example data

vec ＜- c(1, 7, 10) # Create example vector
vec # Return example vector

data[data$x1 %in% vec, ] # Applying %in%-operator

library("dplyr")

filter(data, x1 %in% vec) # Applying filter function

setDT(data, key = "x1")[J(vec)] # Applying setDT function

Follow me on Social Media:

[dangunwangum]

I am trying to learn corresponding dplyr methods in data.table. This is a great video in that regard. I did not know "J" function existed. This channel is my reference channel for all things R.

[arthygunam]

If we have gender column (male, female) in dataframe.
How to extract female rows from the dataframe

[ashsun]

Thank you for the video. Is there a way to select rows by row number/position?