Neighbor highlighting via mouseover and click at the same time
JohnCoene
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globalVariables(c("from", "to", ".")) |
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.build_data <- function(data, ...){ |
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data %>%
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dplyr::select(...) |
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}
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.as_list <- function(data){ |
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apply(data, 1, as.list) %>% # json formatted list |
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unname() # in case of row.names |
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}
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.check_ids <- function(data){ |
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if(!"id" %in% names(data)) |
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stop("missing ids", call. = FALSE) |
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else
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data$id <- as.character(data$id) |
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return(data) |
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}
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.check_x_y <- function(data){ |
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if(!"x" %in% names(data)) |
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data$x <- runif(nrow(data), 1, 20) |
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if(!"y" %in% names(data)) |
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data$y <- runif(nrow(data), 1, 20) |
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return(data) |
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}
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.add_image <- function(sg, data) { |
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.rename <- function(x){ |
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x[x == ""] <- "image" |
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x |
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}
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imgs <- apply(data, 1, function(x) list(as.list(x))) %>% |
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purrr::set_names(rep("image", length(.))) |
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imgs <- purrr::map2(sg$x$data$nodes, imgs, append) |
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n <- purrr::map(imgs, names) %>% |
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purrr::map(.rename) |
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imgs <- purrr::map2(imgs, n, purrr::set_names) |
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sg$x$data$nodes <- imgs |
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sg |
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}
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.data_2_df <- function(x){ |
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if(is.null(x)) |
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stop("must have both edges and nodes to compute layout") |
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do.call("rbind.data.frame", lapply(x, as.data.frame, stringsAsFactors = FALSE)) |
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}
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.re_order <- function(x){ |
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n <- names(x) |
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cols <- c("source", "target") |
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first <- n[n %in% cols] |
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last <- n[!n %in% cols] |
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x[, c(first, last)] |
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}
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.re_order_nodes <- function(x){ |
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n <- names(x) |
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id <- c("id") |
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first <- n[n %in% id] |
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last <- n[!n %in% id] |
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x[, c(first, last)] |
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}
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.rm_x_y <- function(x){ |
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x$x <- NULL |
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x$y <- NULL |
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return(x) |
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}
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.valid_events <- function(){ |
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c("force_start", "force_stop", "noverlap", |
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"drag_nodes", "relative_size", "add_nodes", |
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"add_edges", "drop_nodes", "drop_edges", |
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"animate", "export_svg", "export_img", |
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"add_nodes_edges", "progress", "read_exec") |
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}
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.test_sg <- function(sg){ |
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if(!inherits(sg, "sigmajs")) |
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stop("sg must be of class sigmajs", call. = FALSE) |
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}
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.test_proxy <- function(p){ |
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if (!inherits(p, "sigmajsProxy")) |
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stop("proxy must be of class sigmajsProxy", call. = FALSE) |
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}
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.get_graph <- function(){ |
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graph <- tryCatch( |
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get("igraph", envir = storage_env), |
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error = function(e) NULL |
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)
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}
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.build_igraph <- function(edges, directed = FALSE, nodes, save = TRUE){ |
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g <- .get_graph() |
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if(is.null(g)){ |
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g <- igraph::graph_from_data_frame(edges, directed, nodes) |
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if(isTRUE(save)) |
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assign("igraph", g, envir = storage_env) |
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}
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return(g) |
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}
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.make_rand_id <- function(){ |
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paste0(sample(LETTERS, 5), 1:9, collapse = "") |
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}
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.grp <- function(x, y){ |
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list( |
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nodes = x, |
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edges = y
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)
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}
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