geom_contour_filled 调色板

Question

我正在尝试运行以下代码，但我似乎无法将调色板更改为 ColorBrewer 的光谱调色板。想法？

maya <- tibble(
  mass = seq(1, 10, length.out = 10),
  mois = seq(11, 20, length.out = 10)
) %>%
  expand(mass, mois) %>%
  mutate(
    diff = mois - mass * runif(1)
  ) %>%
  ggplot(aes(mass,mois,z = diff)) +
    geom_contour_filled() +
    scale_fill_distiller(palette = "Spectral")
maya

Answer 1

如果我没理解错的话，也许您正在寻找 geom_raster 与 interpolate = TRUE 和 scale_fill_distiller 的组合？

library(tidyverse)

tibble(
  mass = seq(1, 10, length.out = 10),
  mois = seq(11, 20, length.out = 10)
) %>%
  expand(mass, mois) %>%
  mutate(
    diff = mois - mass * runif(1)
  ) %>%
  ggplot(aes(mass,mois,fill = diff)) +
  geom_raster(interpolate = TRUE) +
  scale_fill_distiller(palette = "Spectral")

^{由 reprex package (v0.2.1)}

于 2020-04-13 创建

要扩展，scale_fill_distiller 可以对色标进行插值以适应连续的值范围，但它实际上不能像以前那样对数据进行插值。据我所知，geom_contour_filled 中也没有内置此类功能。因此，我认为您要么需要在绘图之前手动进行插值，要么依赖于 geom_raster.

中的插值之类的东西

geom_contour_filled 调色板

geom_contour_filled colour palette

r

ggplot2

colorbrewer