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#' Apply multiple DiagrammeR global graph attributes
#'
#' @param dctGraph The [DiagrammeR::DiagrammeR] graph to apply the attributes to.
#' @param ... One or more character vectors of length three, where the first element is
#' the attribute, the second the value, and the third, the attribute type (`graph`,
#' `node`, or `edge`).
#'
#' @return The [DiagrammeR::DiagrammeR] graph.
#' @examples
#' exampleSpec <-
#' system.file("inst",
#' "extdata",
#' "example_dct_spec_1.dct",
#' package="psyverse");
#' parsedSpecs <- load_dct_specs(exampleSpec);
#' dctGraph <- parsedSpecs$output$basic_graph;
#' dctGraph <- apply_graph_theme(dctGraph,
#' c("color", "#0000AA", "node"),
#' c("fillcolor", "#00FFFF", "node"));
#' @export
apply_graph_theme <- function(dctGraph,
...) {
if (!requireNamespace("DiagrammeR", quietly = TRUE)) {
stop("This function applies graph themes to a `DiagrammeR` object. ",
"Therefore, obviously, that object must first exist, and you need ",
"the `DiagrammeR` package to create it and work with it. Please ",
"install it using:\n\n install.packages('DiagrammeR');\n",
call. = FALSE)
}
for (currentSetting in list(...)) {
if ((length(currentSetting) != 3) && is.character(currentSetting)) {
stop("Only provide character vectors of length 3 in the dots (...) argument!");
} else {
dctGraph <-
DiagrammeR::add_global_graph_attrs(dctGraph,
currentSetting[1],
currentSetting[2],
currentSetting[3]);
}
}
return(dctGraph);
}
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