我想要一个图表,作为一年中一天的函数,在 x 和 y 轴(其中每个轴都是一个单独的指标)上从 0 -> 100% 前进。根据数据相对于一年中哪一天的位置,我想表明这是好是坏。很简单,我可以这样显示:
因此,上图显示我们处于良好状态,因为“提示”(最暗的最大点)已超过 50% 标记(假设我们全年都为 50%)。但我想在水平线和垂直线周围添加渐变线以显示更多细微差别。这是对区域的解释(第一张图是解释......第二张是我想在 ggplot 中显示的方式......区域完全填充。
这是我在 ggplot 中的进展:
我遇到的问题:
问题 1-2 是否可以解决?如果有人有更好的方法不使用
geom_line
,请随时提出建议。编辑:随着线条移动,渐变也会移动,因此静态背景在这里不起作用。
代码如下:
dff <- data.frame(x = 1:60+(runif(n = 60,-2,2)),
y = 1:60+(runif(n = 60,-2,2)),
z = 1:60)
dfgrad <- data.frame(static = c(rep(50,1000)), line = seq(0,100,length.out=100))
## To see the gradientlines thinner, change the size on the geom_line to like 200
ggplot(dff,aes(x,y)) +
geom_line(data = dfgrad, aes(x=static, y=line, color=line),size=1000,alpha=0.5) +
geom_line(data = dfgrad, aes(x=line, y=static, color=line),size=1000,alpha=0.5) +
scale_colour_gradientn( colours = c( "yellow", "darkgreen","darkred"),
breaks = c( 0, 3, 100),
limits = c( 0,100)) +
geom_hline(yintercept = 50, linetype="dashed") +
geom_vline(xintercept = 50, linetype="dashed") +
geom_point(aes(alpha=dff$z,size= (dff$z))) +
theme(legend.position="none") +
scale_x_continuous(expand = c(0, 0)) + scale_y_continuous(expand = c(0, 0))
最终编辑:提交的答案是正确的,但为了根据“今天”行更改渐变,我不得不把它弄乱一点……所以我把它贴在这里,以防它对任何人有用:
g1 <- colorRampPalette(c("darkgreen", "darkgreen","red"))(20) %>%
alpha(0.3) %>% matrix(ncol=1) %>% # up and down gradient
rasterGrob(width = 1, height = 1) # full-size (control it by ggplot2)
g2 <- colorRampPalette(c("yellow", "darkgreen","red"))(20) %>%
alpha(0.3) %>% matrix(nrow=1) %>% # left and right gradient
rasterGrob(width = 1, height = 1)
timeOfYear <- 5
maxx <- max(timeOfYear,(100-timeOfYear))
ggplot(dff,aes(x,y)) +
annotation_custom(g1, xmin = timeOfYear-maxx, xmax = timeOfYear+maxx, ymin = timeOfYear-maxx, ymax = timeOfYear+maxx) +
annotation_custom(g2, xmin = timeOfYear-maxx, xmax = timeOfYear+maxx, ymin = timeOfYear-maxx, ymax = timeOfYear+maxx) +
# annotation_custom(g1, xmin = 35, xmax = 65, ymin = -3, ymax = 100) +
# annotation_custom(g2, xmin = -3, xmax = 100, ymin = 35, ymax = 65) +
geom_hline(yintercept = timeOfYear, linetype="dashed") +
geom_vline(xintercept = timeOfYear, linetype="dashed") +
geom_point(aes(alpha=dff$z,size= (dff$z))) +
theme(legend.position="none") +
coord_cartesian(xlim = c(0, 100), ylim = c(0, 100), expand = F)
最佳答案
如果我是你,我会用 grid
做矩形使用 annotation_custom()
打包并将它们放在图表上. (您的问题。1 是由于重叠,请尝试 alpha=0.05
)
这是我的例子:
library(ggplot2); library(grid); library(dplyr)
g1 <- colorRampPalette(c("yellow", "darkgreen","darkred"))(20) %>%
alpha(0.5) %>% matrix(ncol = 1) %>% # up and down gradient
rasterGrob(width = 1, height = 1) # full-size (control it by ggplot2)
g2 <- colorRampPalette(c("cyan", "darkgreen","darkblue"))(20) %>%
alpha(0.5) %>% matrix(nrow = 1) %>% # left and right gradient
rasterGrob(width = 1, height = 1)
ggplot(dff,aes(x,y)) +
annotation_custom(g1, xmin = 35, xmax = 65, ymin = -3, ymax = 100) +
annotation_custom(g2, xmin = -3, xmax = 100, ymin = 35, ymax = 65) +
geom_hline(yintercept = 50, linetype="dashed") +
geom_vline(xintercept = 50, linetype="dashed") +
geom_point(aes(alpha=dff$z,size= (dff$z))) +
theme(legend.position="none") +
coord_cartesian(xlim = c(-3, 100), ylim = c(-3, 100), expand = F)
[编辑]
这是我为每个 timeOfYear 保持相同梯度度的方法(我引用了@Amit Kohli 的代码)(左图是概念);
# I added both limits colors as outside colors
# to avoid that graph becomes almost green when timeOfYear is about 50.
g1.2 <- c(rep("yellow", 5), colorRampPalette(c("yellow", "darkgreen","red"))(20), rep("red", 5)) %>%
rev() %>% alpha(0.3) %>% matrix(ncol=1) %>% rasterGrob(width = 1, height = 1)
g2.2 <- c(rep("yellow", 5), colorRampPalette(c("yellow", "darkgreen","red"))(20), rep("red", 5)) %>%
alpha(0.3) %>% matrix(nrow=1) %>% rasterGrob(width = 1, height = 1)
timeOfYear <- 5
ggplot(dff, aes(x, y)) +
annotation_custom(g1.2, timeOfYear - 100, timeOfYear + 100, timeOfYear - 100, timeOfYear + 100) +
annotation_custom(g2.2, timeOfYear - 100, timeOfYear + 100, timeOfYear - 100, timeOfYear + 100) +
geom_hline(yintercept = timeOfYear, linetype="dashed") +
geom_vline(xintercept = timeOfYear, linetype="dashed") +
geom_point(aes(alpha=dff$z,size= (dff$z))) +
theme(legend.position="none") +
coord_cartesian(xlim = c(0, 100), ylim = c(0, 100), expand = F)
如果您需要,
SpaDES::divergentColors()
为您提供具有非对称范围的颜色向量(可能某些包具有类似的功能)。library(SpaDES)
timeOfYear <- 5
# ?divergentColors(start.color, end.color, min.value, max.value, mid.value = 0, mid.color = "white")
# It makes a vector of colors (length: max.value - min.value)
# and you can define mid.color's val (i.e., position)
g3 <- divergentColors("yellow", "red", 0, 100, timeOfYear, mid.color = "darkgreen") %>%
rev() %>% alpha(0.3) %>% matrix(ncol = 1) %>% rasterGrob(width = 1, height = 1)
g4 <- divergentColors("yellow", "red", 0, 100, timeOfYear, mid.color = "darkgreen") %>%
alpha(0.3) %>% matrix(nrow = 1) %>% rasterGrob(width = 1, height = 1)
ggplot(dff,aes(x,y)) +
annotation_custom(g3, xmin = 0, xmax = 100, ymin = 0, ymax = 90) +
annotation_custom(g4, xmin = 0, xmax = 90, ymin = 0, ymax = 100) +
geom_hline(yintercept = timeOfYear, linetype="dashed") +
geom_vline(xintercept = timeOfYear, linetype="dashed") +
geom_point(aes(alpha=dff$z,size= (dff$z))) +
theme(legend.position="none") +
coord_cartesian(xlim = c(0, 100), ylim = c(0, 100), expand = F)
关于r - ggplot2 线周围的缓冲区,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/40588727/