library(ggplot2)
library(moonBook)
library(webr)
PieDonut(mtcars,aes(gear,carb),start=3*pi/2,explode=3,explodeDonut=TRUE,maxx=1.7)
我从 https://cardiomoon.github.io/webr/reference/PieDonut.html 中获取了示例。我想更改饼图和 donut 的颜色，但是当我在函数中指定 color = c(...) 时它不起作用。
最佳答案
查看源代码，它们是硬编码在 PieDonut 里面的。最后返回的图实际上是打印在同一页上的两个 ggplot。最后打印的是外环，例如如果您尝试存储对象然后打印，您将只能看到一半的图:
f <- PieDonut(mtcars,aes(gear,carb),start=3*pi/2,explode=3,explodeDonut=TRUE,maxx=1.7)
plot(f)
在函数内部，内环的主要颜色是用 mainCol <- gg_color_hue(3) 创建的和外部色调 makeSubColor(mainCol, no = 4)在你的例子中。
如果你确实需要新颜色，可以从控制台复制代码，换出gg_color_hue使用不同的调色板功能，如 RColorBrewer::brewer.pal例如以下。我不建议长期使用，因为该功能很容易发生变化
PieDonutCustom <- function (data, mapping, start = getOption("PieDonut.start",
0), addPieLabel = TRUE, addDonutLabel = TRUE, showRatioDonut = TRUE,
showRatioPie = TRUE, ratioByGroup = TRUE, showRatioThreshold = getOption("PieDonut.showRatioThreshold",
0.02), labelposition = getOption("PieDonut.labelposition",
2), labelpositionThreshold = 0.1, r0 = getOption("PieDonut.r0",
0.3), r1 = getOption("PieDonut.r1", 1), r2 = getOption("PieDonut.r2",
1.2), explode = NULL, selected = NULL, explodePos = 0.1,
color = "white", pieAlpha = 0.8, donutAlpha = 1, maxx = NULL,
showPieName = TRUE, showDonutName = FALSE, title = NULL,
pieLabelSize = 4, donutLabelSize = 3, titlesize = 5, explodePie = TRUE,
explodeDonut = FALSE, use.label = TRUE, use.labels = TRUE,
family = getOption("PieDonut.family", ""), palette_name="Dark2")
{
(cols = colnames(data))
if (use.labels)
data = moonBook::addLabelDf(data, mapping)
count <- NULL
if ("count" %in% names(mapping))
count <- moonBook::getMapping(mapping, "count")
count
pies <- donuts <- NULL
(pies = moonBook::getMapping(mapping, "pies"))
if (is.null(pies))
(pies = moonBook::getMapping(mapping, "pie"))
if (is.null(pies))
(pies = moonBook::getMapping(mapping, "x"))
(donuts = moonBook::getMapping(mapping, "donuts"))
if (is.null(donuts))
(donuts = moonBook::getMapping(mapping, "donut"))
if (is.null(donuts))
(donuts = moonBook::getMapping(mapping, "y"))
if (!is.null(count)) {
df <- data %>% group_by(.data[[pies]]) %>% dplyr::summarize(Freq = sum(.data[[count]]))
df
}
else {
df = data.frame(table(data[[pies]]))
}
colnames(df)[1] = pies
df$end = cumsum(df$Freq)
df$start = dplyr::lag(df$end)
df$start[1] = 0
total = sum(df$Freq)
df$start1 = df$start * 2 * pi/total
df$end1 = df$end * 2 * pi/total
df$start1 = df$start1 + start
df$end1 = df$end1 + start
df$focus = 0
if (explodePie)
df$focus[explode] = explodePos
df$mid = (df$start1 + df$end1)/2
df$x = ifelse(df$focus == 0, 0, df$focus * sin(df$mid))
df$y = ifelse(df$focus == 0, 0, df$focus * cos(df$mid))
df$label = df[[pies]]
df$ratio = df$Freq/sum(df$Freq)
if (showRatioPie) {
df$label = ifelse(df$ratio >= showRatioThreshold, paste0(df$label,
"\n(", scales::percent(df$ratio), ")"),
as.character(df$label))
}
df$labelx = (r0 + r1)/2 * sin(df$mid) + df$x
df$labely = (r0 + r1)/2 * cos(df$mid) + df$y
if (!is.factor(df[[pies]]))
df[[pies]] <- factor(df[[pies]])
df
mainCol = RColorBrewer::brewer.pal(nrow(df), name=palette_name)
df$radius = r1
df$radius[df$focus != 0] = df$radius[df$focus != 0] + df$focus[df$focus !=
0]
df$hjust = ifelse((df$mid%%(2 * pi)) > pi, 1, 0)
df$vjust = ifelse(((df$mid%%(2 * pi)) < (pi/2)) | (df$mid%%(2 *
pi) > (pi * 3/2)), 0, 1)
df$segx = df$radius * sin(df$mid)
df$segy = df$radius * cos(df$mid)
df$segxend = (df$radius + 0.05) * sin(df$mid)
df$segyend = (df$radius + 0.05) * cos(df$mid)
df
if (!is.null(donuts)) {
subColor = makeSubColor(mainCol, no = length(unique(data[[donuts]])))
subColor
data
if (!is.null(count)) {
df3 <- as.data.frame(data[c(donuts, pies, count)])
colnames(df3) = c("donut", "pie", "Freq")
df3
df3 <- eval(parse(text = "complete(df3,donut,pie)"))
df3$Freq[is.na(df3$Freq)] = 0
if (!is.factor(df3[[1]]))
df3[[1]] = factor(df3[[1]])
if (!is.factor(df3[[2]]))
df3[[2]] = factor(df3[[2]])
df3 <- df3 %>% arrange(.data$pie, .data$donut)
a <- df3 %>% spread(.data$pie, value = .data$Freq)
a = as.data.frame(a)
a
rownames(a) = a[[1]]
a = a[-1]
a
colnames(df3)[1:2] = c(donuts, pies)
}
else {
df3 = data.frame(table(data[[donuts]], data[[pies]]),
stringsAsFactors = FALSE)
colnames(df3)[1:2] = c(donuts, pies)
a = table(data[[donuts]], data[[pies]])
a
}
a
df3
df3$group = rep(colSums(a), each = nrow(a))
df3$pie = rep(1:ncol(a), each = nrow(a))
total = sum(df3$Freq)
total
df3$ratio1 = df3$Freq/total
df3
if (ratioByGroup) {
df3$ratio = scales::percent(df3$Freq/df3$group)
}
else {
df3$ratio <- scales::percent(df3$ratio1)
}
df3$end = cumsum(df3$Freq)
df3
df3$start = dplyr::lag(df3$end)
df3$start[1] = 0
df3$start1 = df3$start * 2 * pi/total
df3$end1 = df3$end * 2 * pi/total
df3$start1 = df3$start1 + start
df3$end1 = df3$end1 + start
df3$mid = (df3$start1 + df3$end1)/2
df3$focus = 0
if (!is.null(selected)) {
df3$focus[selected] = explodePos
}
else if (!is.null(explode)) {
selected = c()
for (i in 1:length(explode)) {
start = 1 + nrow(a) * (explode[i] - 1)
selected = c(selected, start:(start + nrow(a) -
1))
}
selected
df3$focus[selected] = explodePos
}
df3
df3$x = 0
df3$y = 0
df
if (!is.null(explode)) {
explode
for (i in 1:length(explode)) {
xpos = df$focus[explode[i]] * sin(df$mid[explode[i]])
ypos = df$focus[explode[i]] * cos(df$mid[explode[i]])
df3$x[df3$pie == explode[i]] = xpos
df3$y[df3$pie == explode[i]] = ypos
}
}
df3$no = 1:nrow(df3)
df3$label = df3[[donuts]]
if (showRatioDonut) {
if (max(nchar(levels(df3$label))) <= 2)
df3$label = paste0(df3$label, "(", df3$ratio,
")")
else df3$label = paste0(df3$label, "\n(", df3$ratio,
")")
}
df3$label[df3$ratio1 == 0] = ""
df3$label[df3$ratio1 < showRatioThreshold] = ""
df3$hjust = ifelse((df3$mid%%(2 * pi)) > pi, 1, 0)
df3$vjust = ifelse(((df3$mid%%(2 * pi)) < (pi/2)) | (df3$mid%%(2 *
pi) > (pi * 3/2)), 0, 1)
df3$no = factor(df3$no)
df3
labelposition
if (labelposition > 0) {
df3$radius = r2
if (explodeDonut)
df3$radius[df3$focus != 0] = df3$radius[df3$focus !=
0] + df3$focus[df3$focus != 0]
df3$segx = df3$radius * sin(df3$mid) + df3$x
df3$segy = df3$radius * cos(df3$mid) + df3$y
df3$segxend = (df3$radius + 0.05) * sin(df3$mid) +
df3$x
df3$segyend = (df3$radius + 0.05) * cos(df3$mid) +
df3$y
if (labelposition == 2)
df3$radius = (r1 + r2)/2
df3$labelx = (df3$radius) * sin(df3$mid) + df3$x
df3$labely = (df3$radius) * cos(df3$mid) + df3$y
}
else {
df3$radius = (r1 + r2)/2
if (explodeDonut)
df3$radius[df3$focus != 0] = df3$radius[df3$focus !=
0] + df3$focus[df3$focus != 0]
df3$labelx = df3$radius * sin(df3$mid) + df3$x
df3$labely = df3$radius * cos(df3$mid) + df3$y
}
df3$segx[df3$ratio1 == 0] = 0
df3$segxend[df3$ratio1 == 0] = 0
df3$segy[df3$ratio1 == 0] = 0
df3$segyend[df3$ratio1 == 0] = 0
if (labelposition == 0) {
df3$segx[df3$ratio1 < showRatioThreshold] = 0
df3$segxend[df3$ratio1 < showRatioThreshold] = 0
df3$segy[df3$ratio1 < showRatioThreshold] = 0
df3$segyend[df3$ratio1 < showRatioThreshold] = 0
}
df3
del = which(df3$Freq == 0)
del
if (length(del) > 0)
subColor <- subColor[-del]
subColor
}
p <- ggplot() + ggforce::theme_no_axes() + coord_fixed()
if (is.null(maxx)) {
r3 = r2 + 0.3
}
else {
r3 = maxx
}
p1 <- p + ggforce::geom_arc_bar(aes_string(x0 = "x", y0 = "y",
r0 = as.character(r0), r = as.character(r1), start = "start1",
end = "end1", fill = pies), alpha = pieAlpha, color = color,
data = df) + transparent() + scale_fill_manual(values = mainCol) +
xlim(r3 * c(-1, 1)) + ylim(r3 * c(-1, 1)) + guides(fill = FALSE)
if ((labelposition == 1) & (is.null(donuts))) {
p1 <- p1 + geom_segment(aes_string(x = "segx",
y = "segy", xend = "segxend", yend = "segyend"),
data = df) + geom_text(aes_string(x = "segxend",
y = "segyend", label = "label", hjust = "hjust",
vjust = "vjust"), size = pieLabelSize, data = df,
family = family)
}
else if ((labelposition == 2) & (is.null(donuts))) {
p1 <- p1 + geom_segment(aes_string(x = "segx",
y = "segy", xend = "segxend", yend = "segyend"),
data = df[df$ratio < labelpositionThreshold, ]) +
geom_text(aes_string(x = "segxend", y = "segyend",
label = "label", hjust = "hjust",
vjust = "vjust"), size = pieLabelSize,
data = df[df$ratio < labelpositionThreshold,
], family = family) + geom_text(aes_string(x = "labelx",
y = "labely", label = "label"), size = pieLabelSize,
data = df[df$ratio >= labelpositionThreshold, ],
family = family)
}
else {
p1 <- p1 + geom_text(aes_string(x = "labelx", y = "labely",
label = "label"), size = pieLabelSize, data = df,
family = family)
}
if (showPieName)
p1 <- p1 + annotate("text", x = 0, y = 0, label = pies,
size = titlesize, family = family)
p1 <- p1 + theme(text = element_text(family = family))
if (!is.null(donuts)) {
if (explodeDonut) {
p3 <- p + ggforce::geom_arc_bar(aes_string(x0 = "x",
y0 = "y", r0 = as.character(r1), r = as.character(r2),
start = "start1", end = "end1", fill = "no",
explode = "focus"), alpha = donutAlpha,
color = color, data = df3)
}
else {
p3 <- p + ggforce::geom_arc_bar(aes_string(x0 = "x",
y0 = "y", r0 = as.character(r1), r = as.character(r2),
start = "start1", end = "end1", fill = "no"),
alpha = donutAlpha, color = color, data = df3)
}
p3 <- p3 + transparent() + scale_fill_manual(values = subColor) +
xlim(r3 * c(-1, 1)) + ylim(r3 * c(-1, 1)) + guides(fill = FALSE)
p3
if (labelposition == 1) {
p3 <- p3 + geom_segment(aes_string(x = "segx",
y = "segy", xend = "segxend", yend = "segyend"),
data = df3) + geom_text(aes_string(x = "segxend",
y = "segyend", label = "label", hjust = "hjust",
vjust = "vjust"), size = donutLabelSize,
data = df3, family = family)
}
else if (labelposition == 0) {
p3 <- p3 + geom_text(aes_string(x = "labelx",
y = "labely", label = "label"), size = donutLabelSize,
data = df3, family = family)
}
else {
p3 <- p3 + geom_segment(aes_string(x = "segx",
y = "segy", xend = "segxend", yend = "segyend"),
data = df3[df3$ratio1 < labelpositionThreshold,
]) + geom_text(aes_string(x = "segxend",
y = "segyend", label = "label", hjust = "hjust",
vjust = "vjust"), size = donutLabelSize,
data = df3[df3$ratio1 < labelpositionThreshold,
], family = family) + geom_text(aes_string(x = "labelx",
y = "labely", label = "label"), size = donutLabelSize,
data = df3[df3$ratio1 >= labelpositionThreshold,
], family = family)
}
if (!is.null(title))
p3 <- p3 + annotate("text", x = 0, y = r3,
label = title, size = titlesize, family = family)
else if (showDonutName)
p3 <- p3 + annotate("text", x = (-1) * r3,
y = r3, label = donuts, hjust = 0, size = titlesize,
family = family)
p3 <- p3 + theme(text = element_text(family = family))
grid::grid.newpage()
print(p1, vp = grid::viewport(height = 1, width = 1))
print(p3, vp = grid::viewport(height = 1, width = 1))
}
else {
p1
}
}
library(ggplot2)
library(moonBook)
library(webr)
library(RColorBrewer)
PieDonutCustom(mtcars,aes(gear,carb),start=3*pi/2,explode=3,explodeDonut=TRUE,maxx=1.7,
palette_name = "Dark2")
PieDonutCustom(mtcars,aes(gear,carb),start=3*pi/2,explode=3,explodeDonut=TRUE,maxx=1.7,
palette_name = "Set1")
如果您想使用不同的调色板/库，请搜索 mainCol = RColorBrewer::brewer.pal(nrow(df), name=palette_name)在代码中，并将此处的函数替换为您的函数
关于r - PieDonut如何改变馅饼和 donut 的颜色，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/68095243/