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*
f_replace added as a ggplot2 scale gsub convenience function.
* `f_title` added as a ggplot2 scale `tools::toTitleCase` convenience function. * `f_title` added as a ggplot2 scale `strwrap` + `paste(collapse =TRUE)` convenience function.
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Tyler Rinker
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Aug 30, 2017
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,33 @@ | ||
| #' Replace Characters in Strings | ||
| #' | ||
| #' A wrapper for \code{\link[base]{gsub}} for replacing substrings that is | ||
| #' useful for \pkg{ggplot2} scales. Useful for taking field names like | ||
| #' 'Cool_Variable' and turning it into 'Cool Variable'. | ||
| #' | ||
| #' @param x A vector of text strings. | ||
| #' @param pattern A character string defining search patterns. | ||
| #' @param replacement A character string defining replacement patterns. | ||
| #' @param \ldots Other arguments passed to \code{\link[base]{gsub}}. | ||
| #' @return Returns a string vector with characters replaced. | ||
| #' @rdname f_replace | ||
| #' @export | ||
| #' @seealso \code{\link[base]{strwrap}} | ||
| #' @examples | ||
| #' f_replace('Cool_Variable') | ||
| #' f_title(f_replace('cool_variable')) | ||
| #' f_replace('Cool_Variable', pattern = '([A-Z])', replacement = '\\L\\1') | ||
| #' cat(f_replace('really long label names are the pits', | ||
| #' pattern = '\\s', replace = '\n')) | ||
| f_replace <- function (x, pattern = '_', replacement = ' ', ...) { | ||
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| gsub(pattern, replacement, x, perl = TRUE, ...) | ||
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| } | ||
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| #' @export | ||
| #' @include utils.R | ||
| #' @rdname f_replace | ||
| ff_replace <- functionize(f_replace) | ||
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| #' Convert First Letter of Words to Title Case | ||
| #' | ||
| #' A wrapper for \code{\link[tools]{toTitleCase}} converting text to title case. | ||
| #' | ||
| #' @param x A vector of text strings. | ||
| #' @param \ldots ignored. | ||
| #' @return Returns a string vector with characters replaced. | ||
| #' @rdname f_title | ||
| #' @export | ||
| #' @seealso \code{\link[tools]{toTitleCase}} | ||
| #' @examples | ||
| #' f_title('i love this title') | ||
| #' f_title(f_title('Cool_Variable')) | ||
| #' | ||
| #' \dontrun{ | ||
| #' library(tidyverse) | ||
| #' | ||
| #' set.seed(10) | ||
| #' dat <- data_frame( | ||
| #' level = c("not_involved", "somewhat_involved_single_group", | ||
| #' "somewhat_involved_multiple_groups", "very_involved_one_group", | ||
| #' "very_involved_multiple_groups" | ||
| #' ), | ||
| #' n = sample(1:10, length(level)) | ||
| #' ) %>% | ||
| #' mutate( | ||
| #' level = factor(level, levels = unique(level)), | ||
| #' `%` = n/sum(n) | ||
| #' ) | ||
| #' | ||
| #' gridExtra::grid.arrange( | ||
| #' | ||
| #' gridExtra::arrangeGrob( | ||
| #' | ||
| #' dat %>% | ||
| #' ggplot(aes(level, `%`)) + | ||
| #' geom_col() + | ||
| #' labs(title = 'Very Sad', y = NULL) + | ||
| #' theme( | ||
| #' axis.text = element_text(size = 7), | ||
| #' title = element_text(size = 9) | ||
| #' ), | ||
| #' | ||
| #' dat %>% | ||
| #' ggplot(aes(level, `%`)) + | ||
| #' geom_col() + | ||
| #' scale_x_discrete(labels = function(x) f_replace(x, '_', '\n')) + | ||
| #' scale_y_continuous(labels = ff_prop2percent(digits = 0)) + | ||
| #' labs(title = 'Underscore Split (Readable)', y = NULL) + | ||
| #' theme( | ||
| #' axis.text = element_text(size = 7), | ||
| #' title = element_text(size = 9) | ||
| #' ), | ||
| #' | ||
| #' | ||
| #' ncol = 2 | ||
| #' | ||
| #' ), | ||
| #' gridExtra::arrangeGrob( | ||
| #' | ||
| #' dat %>% | ||
| #' ggplot(aes(level, `%`)) + | ||
| #' geom_col() + | ||
| #' scale_x_discrete(labels = function(x) f_title(f_replace(x))) + | ||
| #' scale_y_continuous(labels = ff_prop2percent(digits = 0)) + | ||
| #' labs(title = 'Underscore Replaced & Title (Capitalized Sadness)', y = NULL) + | ||
| #' theme( | ||
| #' axis.text = element_text(size = 7), | ||
| #' title = element_text(size = 9) | ||
| #' ), | ||
| #' | ||
| #' dat %>% | ||
| #' ggplot(aes(level, `%`)) + | ||
| #' geom_col() + | ||
| #' scale_x_discrete(labels = function(x) f_wrap(f_title(f_replace(x)))) + | ||
| #' scale_y_continuous(labels = ff_prop2percent(digits = 0)) + | ||
| #' labs(title = 'Underscore Replaced, Title, & Wrapped (Happy)', y = NULL) + | ||
| #' theme( | ||
| #' axis.text = element_text(size = 7), | ||
| #' title = element_text(size = 9) | ||
| #' ), | ||
| #' | ||
| #' ncol = 2 | ||
| #' | ||
| #' ), ncol = 1 | ||
| #' | ||
| #' ) | ||
| #' | ||
| #' } | ||
| f_title <- function (x, ...) { | ||
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| nas <- is.na(x) | ||
| out <- gsub('(^.)', '\\U\\1', tools::toTitleCase(x), perl = TRUE) | ||
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| out[nas] <- NA | ||
| out | ||
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| } | ||
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| #' @export | ||
| #' @include utils.R | ||
| #' @rdname f_title | ||
| ff_title <- functionize(f_title) | ||
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,73 @@ | ||
| #' Wrap Strings | ||
| #' | ||
| #' Wrap strings by splitting n width, and paste collapsing with new line | ||
| #' characters. | ||
| #' | ||
| #' @param x A vector of text strings. | ||
| #' @param width A positive integer giving the target column for wrapping lines | ||
| #' in the output. | ||
| #' @param exdent A non-negative integer specifying the indentation of subsequent | ||
| #' lines in paragraphs. | ||
| #' @param indent A non-negative integer giving the indentation of the first line | ||
| #' in a paragraph. | ||
| #' @param \ldots Other arguments passed to \code{\link[base]{strwrap}}. | ||
| #' @return Returns a string vector with wrapped new line characters. | ||
| #' @rdname f_wrap | ||
| #' @export | ||
| #' @seealso \code{\link[base]{strwrap}} | ||
| #' @examples | ||
| #' cat(f_wrap('really long label names are the pits')) | ||
| #' cat(f_wrap('really long label names are the pits', width = 20, exdent = 2)) | ||
| #' | ||
| #' \dontrun{ | ||
| #' library(tidyverse); library(gridExtra) | ||
| #' | ||
| #' set.seed(10) | ||
| #' dat <- data_frame( | ||
| #' level = c('Not Involved', 'Somewhat Involved Single Group', | ||
| #' 'Somewhat Involved Multiple Groups', 'Very Involved One Group', | ||
| #' 'Very Involved Multiple Groups' | ||
| #' ), | ||
| #' n = sample(1:10, length(level)) | ||
| #' ) %>% | ||
| #' mutate( | ||
| #' level = factor(level, levels = unique(level)), | ||
| #' `%` = n/sum(n) | ||
| #' ) | ||
| #' | ||
| #' gridExtra::grid.arrange( | ||
| #' dat %>% | ||
| #' ggplot(aes(level, `%`)) + | ||
| #' geom_col() + | ||
| #' labs(title = 'Yucky Labels', y = NULL), | ||
| #' | ||
| #' dat %>% | ||
| #' ggplot(aes(level, `%`)) + | ||
| #' geom_col() + | ||
| #' scale_x_discrete(labels = f_wrap) + | ||
| #' scale_y_continuous(labels = ff_prop2percent(digits = 0)) + | ||
| #' labs(title = 'Happy Labels', y = NULL), | ||
| #' | ||
| #' ncol = 1, heights = c(.45, .55) | ||
| #' ) | ||
| #' | ||
| #' } | ||
| f_wrap <- function (x, width = 15, exdent = 0, indent = 0, ...) { | ||
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| nas <- is.na(x) | ||
| out <- unlist(lapply(x, function(y) { | ||
| paste( | ||
| strwrap(y, width = width, exdent = exdent, indent = indent, ...), | ||
| collapse = "\n" | ||
| ) | ||
| })) | ||
| out[nas] <- NA | ||
| out | ||
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| } | ||
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| #' @export | ||
| #' @include utils.R | ||
| #' @rdname f_wrap | ||
| ff_wrap <- functionize(f_wrap) |
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