How can you delete specified elements in a data frame using the R language?

In R language, you can use the subset() function to remove specific elements from a data frame.

Suppose there is a data frame named df with two columns, col1 and col2, and we want to remove the elements in col1 that have the value “A”. This can be done using the following code:

df <- subset(df, col1 != "A")

The code above will generate a new data frame that does not contain elements with a value of “A” in the col1 column.

If you want to perform deletion directly on the original dataframe, you can use the following code:

df <- df[df$col1 != "A", ]

The above code will directly remove the elements in column 1 of the original dataframe that have a value of “A”.