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March 2, 2018 19:21
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Simple gsub to get rid of non-numeric characters and then change to a numeric vector
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| x <- c("scaffold79", "scaffold30", "scaffold304") | |
| new_x <- gsub("[^0-9]", "", x) | |
| numeric_x <- as.numeric(new_x) | |
| # for a data.frame | |
| x <- NULL | |
| x$scaffolds <- c("scaffold79", "scaffold30", "scaffold304") | |
| x$scaffolds <- gsub("[^0-9]", "", x$scaffolds) | |
| x$scaffolds <- as.numeric(x$scaffolds) |
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