CODEWITHSUNDEEP
r
Jeremy
Jeremy

Reputation: 876

replace a whole sentence with a string in r

I need to replace a whole sentence with a string. For example:

# I want to replace "coarse particulate matter (Hourly measured)" with "pm10"
species <- c("coarse particulate matter (Hourly measured)","nitrogen dixoide")

# I tried:
sub("coarse particulate matter (Hourly measured)","pm10",species)
gsub("coarse particulate matter (Hourly measured)","pm10",species)
str_replace(species,"coarse particulate matter (Hourly measured)","pm10")

But none of them works. Many thanks for help.

In the real data, the orders are random. That is why I can not use things like

species[1] <- "pm10"

Upvotes: 1

Views: 117

Answers (4)

Mike V
Mike V

Reputation: 1364

If you want to use str_replace you may need fixed

str_replace(species, fixed("coarse particulate matter (Hourly measured)", ignore_case = TRUE), "pm10")
#[1] "pm10"             "nitrogen dixoide"

Upvotes: 1

Jennifer Green
Jennifer Green

Reputation: 31

species[species == "coarse particulate matter (Hourly measured)"] <- "pm10"

Upvotes: 1

ThomasIsCoding
ThomasIsCoding

Reputation: 101335

You can try with option fixed = TRUE

> sub("coarse particulate matter (Hourly measured)","pm10",species,fixed = TRUE)
[1] "pm10"             "nitrogen dixoide"

> gsub("coarse particulate matter (Hourly measured)","pm10",species,fixed = TRUE)
[1] "pm10"             "nitrogen dixoide"

Upvotes: 1

akrun
akrun

Reputation: 887108

Here, we don't need sub

species[1] <- "pm10"

or use ==

species[species == "coarse particulate matter (Hourly measured)"] <- "pm10"

Upvotes: 1

Related Questions