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added option to get decimal point in uncertainty formatted with "parenthesis" notation #60

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added option to get decimal point in uncertainty formatted with "parenthesis" notation #60

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5b7c42e
added option to get proper decimal point in uncertainty formatted wit…
alusiani Aug 1, 2024
670e207
restored undue modifications, more uniform code styling
alusiani Aug 1, 2024
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5 changes: 5 additions & 0 deletions NEWS.md
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Original file line number Diff line number Diff line change
@@ -1,3 +1,8 @@
# errors 0.4.3

- add option to print uncertainty with decimal point when appropriate
in the `parenthesis` notation

# errors 0.4.2

- Add support for PDG rounding rules (@davidchall #59 addressing #45).
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17 changes: 14 additions & 3 deletions R/print.R
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Expand Up @@ -11,6 +11,9 @@
#' encoded in scientific format.
#' @param notation error notation; \code{"parenthesis"} and \code{"plus-minus"}
#' are supported through the \code{"errors.notation"} option.
#' When using the "parenthesis" error notation, by default the uncertainty
#' is formatted without any decimal point, unless the option
#' \code{"errors.parenthesis.unc.dec.point"} is set to TRUE.
#' @param ... ignored.
#'
#' @references
Expand Down Expand Up @@ -45,8 +48,9 @@ format.errors = function(x,

e <- signif(.e(x), digits)
nulle <- e == 0 & !is.na(e)
xexp <- ifelse(.v(x) == 0, get_exponent(e) + 1, get_exponent(x))
value_digits <- ifelse(e, digits - get_exponent(e), digits)
eexp <- get_exponent(e)
xexp <- ifelse(.v(x)== 0, eexp+1, get_exponent(x))
value_digits <- ifelse(e, digits - eexp, digits)
value <- ifelse(e, signif(.v(x), xexp + value_digits), .v(x))
value <- ifelse(is.finite(value), value, .v(x))

Expand All @@ -60,7 +64,14 @@ format.errors = function(x,
if (notation == "parenthesis") {
sep <- "("
append[] <- ")"
e[is.finite(e)] <- (e * 10^(pmax(0, value_digits-1)))[is.finite(e)]
if (!getOption("errors.parenthesis.unc.dec.point", FALSE)) {
## remove decimal point from uncertainty by scaling it appropriately
e[is.finite(e)] <- (e * 10^(pmax(0, value_digits-1)))[is.finite(e)]
} else {
## convert uncertainty for printing, keeping decimal point in line with value
e_scale_flag = (cond & eexp < xexp) | (!cond & is.finite(e) & eexp<0)
e[e_scale_flag] <- (e * 10^(pmax(0, value_digits-1)))[e_scale_flag]
}
} else {
sep <- paste0(" ", .pm, " ")
prepend[cond] <- "("
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5 changes: 4 additions & 1 deletion man/format.errors.Rd
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8 changes: 8 additions & 0 deletions tests/testthat/test-print.R
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Expand Up @@ -41,6 +41,14 @@ test_that("error formatting works properly", {
c("(1.11112", "0.00001)e4"), c("(1.111122", "0.000001)e4"), c("(1.111122222", "0.000000001)e4"),
c("(1.111122222000", "0.000000000001)e4")),
paste, collapse=paste("", .pm, "")))
#
# test using option to keep decimal point in uncertainty in parenthesis notation
#
saved_options = options(errors.parenthesis.unc.dec.point = TRUE)
expect_equal(format(x, notation="parenthesis", digits=3),
c("10000(12300000)", "11110(1230)", "11111.2(12.3)", "11111.22(1.23)",
"11111.222(123)", "11111.2222(123)", "11111.2222200(123)", "11111.2222200000(123)"))
options(saved_options)

x <- set_errors(rep(0.827, 3), c(0.119, 0.367, 0.962))
expect_equal(format(x, notation="plus-minus", digits="pdg"), sapply(list(
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