好家伙！图例还有3D的？！推荐这个可视化工具~~

DataCharm

发布于 2023-08-23 10:29:52

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发布于 2023-08-23 10:29:52

今天小编给大家推荐一个优秀的颜色映射R包-ggchromatic，该包提供了额外的fill和colour等选项，可将变量值映射到不用的颜色值上，且其作为ggplot2的拓展包，用起来也十分方便。接下来小编就通过几个具体例子带你领略一下ggchromatic包的颜色魅力。

R-ggchromatic 样例展示

「cmy_spec()」:

library(tidyverse)
library(ggtext)
library(hrbrthemes)
library(wesanderson)
library(LaCroixColoR)
library(RColorBrewer)
library(ggchromatic)

#可视化绘制
ggplot(mtcars, aes(mpg, disp)) +
  geom_point(aes(colour = cmy_spec(mpg, drat, wt)),size=4) +
  labs(
    title = "Example of <span style='color:#D20F26'>ggchromatic::cmy_spec function</span>",
    subtitle = "processed charts with <span style='color:#1A73E8'>cmy_spec()</span>",
    caption = "Visualization by <span style='color:#0057FF'>DataCharm</span>") +
  hrbrthemes::theme_ipsum(base_family = "Roboto Condensed")  +
  theme(
    plot.title = element_markdown(hjust = 0.5,vjust = .5,color = "black",
                                  size = 20, margin = margin(t = 1, b = 12)),
    plot.subtitle = element_markdown(hjust = 0,vjust = .5,size=15),
    plot.caption = element_markdown(face = 'bold',size = 12)
      )

Colour Example01 Of cmy_spec()

「rgb_spec()」

+
geom_point(aes(colour = rgb_spec(mpg, drat, wt)),size=4) 
+

Colour Example02 Of rgb_spec()

或者绘制一下效果：

ggplot(iris, aes(Sepal.Width, Sepal.Length)) + 
  geom_point(aes(colour = rgb_spec(Species, sample(Species), sample(Species))),size=4) +
  labs(
    title = "Example of <span style='color:#D20F26'>ggchromatic::rgb_spec function</span>",
    subtitle = "processed charts with <span style='color:#1A73E8'>rgb_spec(-sample-)</span>",
    caption = "Visualization by <span style='color:#0057FF'>DataCharm</span>") +
  hrbrthemes::theme_ipsum(base_family = "Roboto Condensed")  +
  theme(
    plot.title = element_markdown(hjust = 0.5,vjust = .5,color = "black",
                                  size = 20, margin = margin(t = 1, b = 12)),
    plot.subtitle = element_markdown(hjust = 0,vjust = .5,size=15),
    plot.caption = element_markdown(face = 'bold',size = 12)
      )

Colour Example02-1 Of rgb_spec()

「hsv_spec()」:

+
geom_point(aes(colour = hsv_spec(mpg, drat, wt)),size=4) 
+

Colour Example03 Of hsv_spec()

「guide_colourrect()」:

ggplot(mtcars, aes(mpg, wt)) +
  geom_point(aes(colour = cmy_spec(as.factor(cyl), drat, qsec)),size=4) +
  guides(
  colour = guide_colourrect(title = c("# Cylinders", "Rear axle ratio"))
) +
 labs(
    title = "Example of <span style='color:#D20F26'>ggchromatic::guide_colourrect function</span>",
    subtitle = "processed charts with <span style='color:#1A73E8'>guide_colourrect()</span>",
    caption = "Visualization by <span style='color:#0057FF'>DataCharm</span>") +
  hrbrthemes::theme_ipsum(base_family = "Roboto Condensed")  +
  theme(
    plot.title = element_markdown(hjust = 0.5,vjust = .5,color = "black",
                                  size = 20, margin = margin(t = 1, b = 12)),
    plot.subtitle = element_markdown(hjust = 0,vjust = .5,size=15),
    plot.caption = element_markdown(face = 'bold',size = 12)
      )

Colour Example04 Of guide_colourrect()

「guide_chromatic()」：

df <- data.frame(
  x = c(row(volcano)), y = c(col(volcano)), z = c(volcano)
)
ggplot(df, aes(x, y)) +
  guides(fill = guide_chromatic()) +
  geom_raster(aes(fill = cmy_spec(x, z))) +
  labs(
    title = "Example of <span style='color:#D20F26'>ggchromatic::guide_chromatic function</span>",
    subtitle = "processed charts with <span style='color:#1A73E8'>guide_chromatic()</span>",
    caption = "Visualization by <span style='color:#0057FF'>DataCharm</span>") +
  hrbrthemes::theme_ipsum(base_family = "Roboto Condensed")  +
  theme(
    plot.title = element_markdown(hjust = 0.5,vjust = .5,color = "black",
                                  size = 20, margin = margin(t = 1, b = 12)),
    plot.subtitle = element_markdown(hjust = 0,vjust = .5,size=15),
    plot.caption = element_markdown(face = 'bold',size = 12)
      )