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Merge pull request #93 from atorus-research/devel
Tplyr 1.0.0 Release to Main
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| .Ruserdata | ||
| inst/doc | ||
| Tplyr.Rproj | ||
| docs/ | ||
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| #' Apply Format Strings outside of a Tplyr table | ||
| #' | ||
| #' The `f_str` object in Tplyr is used to drive formatting of the outputs | ||
| #' strings within a Tplyr table. This function allows a user to use the same | ||
| #' interface to apply formatted string on any data frame within a | ||
| #' `dplyr::mutate()` context. | ||
| #' | ||
| #' Note that auto-precision is not currently supported within `apply_formats()` | ||
| #' | ||
| #' @param format_string The desired display format. X's indicate digits. On the | ||
| #' left, the number of x's indicates the integer length. On the right, the | ||
| #' number of x's controls decimal precision and rounding. Variables are | ||
| #' inferred by any separation of the 'x' values other than a decimal. | ||
| #' @param ... The variables to be formatted using the format specified in | ||
| #' \code{format_string}. These must be numeric variables. | ||
| #' @param empty The string to display when the numeric data is not available. | ||
| #' Use a single element character vector, with the element named '.overall' to | ||
| #' instead replace the whole string. | ||
| #' | ||
| #' @return Character vector of formatted values | ||
| #' @md | ||
| #' @export | ||
| #' | ||
| #' @examples | ||
| #' | ||
| #' library(dplyr) | ||
| #' | ||
| #' mtcars %>% | ||
| #' head() %>% | ||
| #' mutate( | ||
| #' fmt_example = apply_formats('xxx (xx.x)', hp, wt) | ||
| #' ) | ||
| apply_formats <- function(format_string, ..., empty = c(.overall = "")) { | ||
| format <- f_str(format_string, ..., empty=empty) | ||
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| if (format$auto_precision) { | ||
| stop('Auto-precision is not currently supported within the `apply_formats()` context', | ||
| call.=FALSE) | ||
| } | ||
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| pmap_chr(list(...), function(...) apply_fmts(...), fmt=format) | ||
| } | ||
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| #' Application of individual format string | ||
| #' | ||
| #' This is what's used internally on the vectorized apply_formats | ||
| #' | ||
| #' @param ... The variables to be formatted using the format specified in | ||
| #' the `f_str` object | ||
| #' @param fmt An f_str object | ||
| #' @md | ||
| #' | ||
| #' @return An individually formatted string | ||
| #' @noRd | ||
| apply_fmts <- function(..., fmt) { | ||
| nums <- list(...) | ||
| repl <- vector('list', length(fmt$settings)) | ||
| for (i in seq_along(fmt$settings)) { | ||
| repl[[i]] <- num_fmt(nums[[i]], i, fmt=fmt) | ||
| } | ||
| args <- append(list(fmt$repl_str), repl) | ||
| do.call('sprintf', args) | ||
| } |
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