Nothing
# Copyright (c) 2019 - 2023, Adrian Dusa
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, in whole or in part, are permitted provided that the
# following conditions are met:
# * Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# * Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in the
# documentation and/or other materials provided with the distribution.
# * The names of its contributors may NOT be used to endorse or promote products
# derived from this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
# DISCLAIMED. IN NO EVENT SHALL ADRIAN DUSA BE LIABLE FOR ANY
# DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
# (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
# LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
# ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
# SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
`checkMV` <- function(
expression, snames = "", noflevels = NULL, data = NULL, use.labels = FALSE, categories = list(), ...
) {
curly <- any(grepl("[{]", expression))
if (length(unlist(gregexpr(ifelse(curly, "[{]+", "\\[+"), expression))) != length(unlist(gregexpr(ifelse(curly, "[}]+", "\\]+"), expression)))) {
stopError("Incorrect expression, opened and closed brackets don't match.")
}
dots <- list(...)
if (is.element("categorical", names(dots))) {
use.labels <- dots$categorical
dots$categorical <- NULL
}
tempexpr <- gsub("[*|,|;|(|)]", "", expression)
pp <- trimstr(unlist(strsplit(tempexpr, split = "[+]")))
if (curly) {
insb <- curlyBrackets(gsub("[*|(|)]", "", expression))
tempexpr <- curlyBrackets(tempexpr, outside = TRUE)
}
else {
insb <- squareBrackets(gsub("[*|(|)]", "", expression))
tempexpr <- squareBrackets(tempexpr, outside = TRUE)
}
if (length(insb) != length(tempexpr)) {
error <- TRUE
if (use.labels) {
tempexpr2 <- tempexpr[!is.element(tempexpr, names(unlist(unname(categories))))]
error <- length(insb) != length(tempexpr2)
}
if (error) {
stopError("Incorrect expression, some set names do not have brackets.")
}
}
if (any(grepl("[a-zA-Z]", gsub("[,|;]", "", insb)))) {
stopError("Invalid [multi]values, levels should be numeric.")
}
if (curly) {
conds <- sort(unique(notilde(curlyBrackets(pp, outside = TRUE))))
}
else {
conds <- sort(unique(notilde(squareBrackets(pp, outside = TRUE))))
}
if (is.null(data)) {
if (is.null(noflevels)) {
if (any(hastilde(expression))) {
stopError("Negating a multivalue condition requires the number of levels.")
}
}
else {
if (identical(snames, "")) {
stopError("Cannot verify the number of levels without the set names.")
}
snames <- splitstr(snames)
if (is.character(noflevels)) {
noflevels <- splitstr(noflevels)
}
if (length(noflevels) == 1 && is.numeric(noflevels) && length(snames) > 1) {
noflevels <- rep(noflevels, length(snames))
}
if (length(snames) != length(noflevels)) {
stopError("Length of the set names differs from the length of the number of levels.")
}
for (i in seq(length(tempexpr))) {
if (!is.element(notilde(tempexpr[i]), snames)) {
stopError(sprintf("Condition %s not present in the set names.", tempexpr[i]))
}
if (max(asNumeric(splitstr(insb[i]))) > noflevels[match(notilde(tempexpr[i]), snames)] - 1) {
stopError(sprintf("Levels outside the number of levels for condition %s.", tempexpr[i]))
}
}
}
}
for (i in seq(length(expression))) {
checkValid(
expression = expression[i],
snames = "something",
data = data,
categories = categories
)
}
}
Any scripts or data that you put into this service are public.
Add the following code to your website.
For more information on customizing the embed code, read Embedding Snippets.