সম্পাদনা / সংযোজন
আমি তখন থেকেই আবিষ্কার করেছি যে ট্রিপম্যাপ প্যাকেজটি নীচে উল্লিখিত (এবং অভিযোজিত) ম্যাপ.মার্কেট () ফাংশনের চেয়ে অনেক ভাল ফলাফল দেয়; তবে আমি আমার উত্তরটি historicalতিহাসিক কারণে ছেড়ে দেব।
আসল উত্তর
উত্তরের জন্য ধন্যবাদ। @ জেটিটি দ্বারা সরবরাহিত প্রবাহিত ডেটা লিঙ্কের উপর ভিত্তি করে তবে কেবল যুক্তিসঙ্গত গ্রাফিক পেতে ইলাস্ট্রেটর বা ইনসক্যাপে হাতে কল করার প্রয়োজনকে অপছন্দ করে আমি জ্যাপ এনোস এবং ডেভিড কেনের পোর্টফোলিও প্যাকেজে ম্যাপ.মার্কেট () ফাংশনটি টুইঙ্ক করেছি it ব্যবহারকারী দ্বারা নিয়ন্ত্রিত, লেবেলগুলি আয়তক্ষেত্রের আকার অনুসারে পরিবর্তিত হয় এবং লাল-সবুজ বিপরীতে এড়ানো যায়। ব্যবহারের উদাহরণ:
library(portfolio)
library(extrafont)
data(dow.jan.2005)
with(dow.jan.2005,
treemap(id = symbol,
area = price,
group = sector,
color = 100 * month.ret,
labsc = .12, # user-chosen scaling of labels
fontfamily="Comic Sans MS")
)
এটির মূল্যের জন্য, আমি @ নিককক্সের সাথেও সম্মত হই যে আমার মূল প্রশ্নের উদাহরণে একটি বিন্দু চক্রান্ত উন্নত। আমার অভিযোজিত ট্রিম্যাপ () ফাংশনের কোডটি অনুসরণ করে।
treemap <- function (id, area, group, color, scale = NULL, lab = c(group = TRUE,
id = FALSE), low="red", middle="grey60", high="blue", main = "Map of the Market", labsc = c(.5, 1), print = TRUE, ...)
{
# Adapted by Peter Ellis from map.market() by Jeff Enos and David Kane in the portfolio package on CRAN
# See map.market for the original helpfile. The changes are:
# 1. low, middle and high are user-set color ramp choices
# 2. The font size now varies with the area of the rectangle being labelled; labsc is a scaling parameter to make it look ok.
# First element of labsc is scaling parameter for size of group labels. Second element is scaling for id labels.
# 3. ... extra arguments to be passed to gpar() when drawing labels; expected use is for fontfamily="whatever"
require(portfolio)
if (any(length(id) != length(area), length(id) != length(group),
length(id) != length(color))) {
stop("id, area, group, and color must be the same length.")
}
if (length(lab) == 1) {
lab[2] <- lab[1]
}
if (missing(id)) {
id <- seq_along(area)
lab["id"] <- FALSE
}
stopifnot(all(!is.na(id)))
data <- data.frame(label = id, group, area, color)
data <- data[order(data$area, decreasing = TRUE), ]
na.idx <- which(is.na(data$area) | is.na(data$group) | is.na(data$color))
if (length(na.idx)) {
warning("Stocks with NAs for area, group, or color will not be shown")
data <- data[-na.idx, ]
}
zero.area.idx <- which(data$area == 0)
if (length(zero.area.idx)) {
data <- data[-zero.area.idx, ]
}
if (nrow(data) == 0) {
stop("No records to display")
}
data$color.orig <- data$color
if (is.null(scale)) {
data$color <- data$color * 1/max(abs(data$color))
}
else {
data$color <- sapply(data$color, function(x) {
if (x/scale > 1)
1
else if (-1 > x/scale)
-1
else x/scale
})
}
data.by.group <- split(data, data$group, drop = TRUE)
group.data <- lapply(data.by.group, function(x) {
sum(x[, 3])
})
group.data <- data.frame(area = as.numeric(group.data), label = names(group.data))
group.data <- group.data[order(group.data$area, decreasing = TRUE),
]
group.data$color <- rep(NULL, nrow(group.data))
color.ramp.pos <- colorRamp(c(middle, high))
color.ramp.neg <- colorRamp(c(middle, low))
color.ramp.rgb <- function(x) {
col.mat <- mapply(function(x) {
if (x < 0) {
color.ramp.neg(abs(x))
}
else {
color.ramp.pos(abs(x))
}
}, x)
mapply(rgb, col.mat[1, ], col.mat[2, ], col.mat[3, ],
max = 255)
}
add.viewport <- function(z, label, color, x.0, y.0, x.1,
y.1) {
for (i in 1:length(label)) {
if (is.null(color[i])) {
filler <- gpar(col = "blue", fill = "transparent",
cex = 1)
}
else {
filler.col <- color.ramp.rgb(color[i])
filler <- gpar(col = filler.col, fill = filler.col,
cex = 0.6)
}
new.viewport <- viewport(x = x.0[i], y = y.0[i],
width = (x.1[i] - x.0[i]), height = (y.1[i] -
y.0[i]), default.units = "npc", just = c("left",
"bottom"), name = as.character(label[i]), clip = "on",
gp = filler)
z <- append(z, list(new.viewport))
}
z
}
squarified.treemap <- function(z, x = 0, y = 0, w = 1, h = 1,
func = add.viewport, viewport.list) {
cz <- cumsum(z$area)/sum(z$area)
n <- which.min(abs(log(max(w/h, h/w) * sum(z$area) *
((cz^2)/z$area))))
more <- n < length(z$area)
a <- c(0, cz[1:n])/cz[n]
if (h > w) {
viewport.list <- func(viewport.list, z$label[1:n],
z$color[1:n], x + w * a[1:(length(a) - 1)], rep(y,
n), x + w * a[-1], rep(y + h * cz[n], n))
if (more) {
viewport.list <- Recall(z[-(1:n), ], x, y + h *
cz[n], w, h * (1 - cz[n]), func, viewport.list)
}
}
else {
viewport.list <- func(viewport.list, z$label[1:n],
z$color[1:n], rep(x, n), y + h * a[1:(length(a) -
1)], rep(x + w * cz[n], n), y + h * a[-1])
if (more) {
viewport.list <- Recall(z[-(1:n), ], x + w *
cz[n], y, w * (1 - cz[n]), h, func, viewport.list)
}
}
viewport.list
}
map.viewport <- viewport(x = 0.05, y = 0.05, width = 0.9,
height = 0.75, default.units = "npc", name = "MAP", just = c("left",
"bottom"))
map.tree <- gTree(vp = map.viewport, name = "MAP", children = gList(rectGrob(gp = gpar(col = "dark grey"),
name = "background")))
group.viewports <- squarified.treemap(z = group.data, viewport.list = list())
for (i in 1:length(group.viewports)) {
this.group <- data.by.group[[group.data$label[i]]]
this.data <- data.frame(this.group$area, this.group$label,
this.group$color)
names(this.data) <- c("area", "label", "color")
stock.viewports <- squarified.treemap(z = this.data,
viewport.list = list())
group.tree <- gTree(vp = group.viewports[[i]], name = group.data$label[i])
for (s in 1:length(stock.viewports)) {
stock.tree <- gTree(vp = stock.viewports[[s]], name = this.data$label[s],
children = gList(rectGrob(name = "color")))
if (lab[2]) {
stock.tree <- addGrob(stock.tree, textGrob(x = unit(1,
"lines"), y = unit(1, "npc") - unit(1, "lines"),
label = this.data$label[s], gp = gpar(col = "white", fontsize=this.data$area[s] * labsc[2], ...),
name = "label", just = c("left", "top")))
}
group.tree <- addGrob(group.tree, stock.tree)
}
group.tree <- addGrob(group.tree, rectGrob(gp = gpar(col = "grey"),
name = "border"))
if (lab[1]) {
group.tree <- addGrob(group.tree, textGrob(label = group.data$label[i],
name = "label", gp = gpar(col = "white", fontsize=group.data$area[i] * labsc[1], ...)))
}
map.tree <- addGrob(map.tree, group.tree)
}
op <- options(digits = 1)
top.viewport <- viewport(x = 0.05, y = 1, width = 0.9, height = 0.2,
default.units = "npc", name = "TOP", , just = c("left",
"top"))
legend.ncols <- 51
l.x <- (0:(legend.ncols - 1))/(legend.ncols)
l.y <- unit(0.25, "npc")
l.cols <- color.ramp.rgb(seq(-1, 1, by = 2/(legend.ncols -
1)))
if (is.null(scale)) {
l.end <- max(abs(data$color.orig))
}
else {
l.end <- scale
}
top.list <- gList(textGrob(label = main, y = unit(0.7, "npc"),
just = c("center", "center"), gp = gpar(cex = 2, ...)), segmentsGrob(x0 = seq(0,
1, by = 0.25), y0 = unit(0.25, "npc"), x1 = seq(0, 1,
by = 0.25), y1 = unit(0.2, "npc")), rectGrob(x = l.x,
y = l.y, width = 1/legend.ncols, height = unit(1, "lines"),
just = c("left", "bottom"), gp = gpar(col = NA, fill = l.cols),
default.units = "npc"), textGrob(label = format(l.end *
seq(-1, 1, by = 0.5), trim = TRUE), x = seq(0, 1, by = 0.25),
y = 0.1, default.units = "npc", just = c("center", "center"),
gp = gpar(col = "black", cex = 0.8, fontface = "bold")))
options(op)
top.tree <- gTree(vp = top.viewport, name = "TOP", children = top.list)
mapmarket <- gTree(name = "MAPMARKET", children = gList(rectGrob(gp = gpar(col = "dark grey",
fill = "dark grey"), name = "background"), top.tree,
map.tree))
if (print) {
grid.newpage()
grid.draw(mapmarket)
}
invisible(mapmarket)
}
