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I have a string
vec = c('blue','red','flower','bee')
I want to convert different strings into the same in one line instead of seperately i.e. i could gsub blue and gsub red to make them both spell 'colour'. How can I do this in one line?
output should be: 'colour','colour','flower','bee'
391
You can replace the string or the characters in a vector or a data frame using the sub() and gsub() function in R.
To replace multiple characters in a string:Store the characters to be replaced and the replacements in a list. Use a for loop to iterate over the list. Use the str. replace() method to replace each character in the string.
To replace a first or all occurrences of a single character in a string use gsub(), sub(), str_replace(), str_replace_all() and functions from dplyr package of R. gsub() and sub() are R base functions and str_replace() and str_replace_all() are from the stringr package.
You can replace NA values with zero(0) on numeric columns of R data frame by using is.na() , replace() , imputeTS::replace() , dplyr::coalesce() , dplyr::mutate_at() , dplyr::mutate_if() , and tidyr::replace_na() functions.
sub("blue|red", "colour", vec)
use "|" (which means the logical OR operator) between the words you want to substitute.
Use sub to change only the first occurence and gsub to change multiple occurences within the same string.
Type ?gsub into R console for more information.
192
Here you do not need to specify the colors to be replaced, it will replace any color that R knows about (returned by colors())
> col <- paste0(colors(), collapse = "|")
> gsub(col, "colour", vec)
[1] "colour" "colour" "flower" "bee"
Also, as suggested in the comments (which will obviously only work if the element is the color only, so the gsub method seems better suited to your purposes):
> vec[vec %in% colors()] <- "coulour"
> vec
[1] "coulour" "coulour" "flower" "bee"
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