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r - geom_contour_filled 调色板

问题描述

我试图运行以下代码，但似乎无法将调色板更改为 ColorBrewer 的 Spectral 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

标签： rggplot2colorbrewer

解决方案

如果我理解正确，也许您正在追求诸如geom_rasterwithinterpolate = TRUE和的组合之类的东西scale_fill_distiller？

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 包（v0.2.1）于 2020-04-13 创建

为了扩展，scale_fill_distiller可以插值色标以适应连续的值范围，但实际上它不能像原来那样插值您的数据。据我所知，geom_contour_filled两者都没有内置这样的功能。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.

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