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I have text data (in R) and want to replace some characters with other characters in a data frame. I thought this would be an easy task using strsplit on spaces and create a vector that can I can then use matching (%in%) which can then be pasted back together. But then I thought about punctuation. There's no space between the last word of a sentence and the punctuation at the end. I figure there's probably a more simple way to achieve what I want than the convoluted mess that's becoming my code. I would appreciate direction with this problem. #Character String x <- "I like 346 ice cream cones. They're 99 percent good! I ate 46." #Replacement Values Dataframe symbol text 1 "346" "three hundred forty six" 2 "99" "ninety nine" 3 "46" "forty six" #replacement dataframe numDF <- data.frame(symbol = c("346","99", "46"), text = c("three hundred forty six", "ninety nine","forty six"), stringsAsFactors = FALSE) Desired outcome: [1] "I like three hundred forty six ice cream cones. They're ninety nine percent good! You ate forty six?") EDIT: I originally entitled this conditional gsub because that what it seems like to me even though there is no gsub involved.

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