plot_gg在运行示例时崩溃

Question

我尝试复制来自https://www.tylermw.com/3d-ggplots-with-rayshader/的以下光线着色器示例：

library(rayshader)
library(ggplot2)
library(tidyverse)
library(sf)
library(viridis)

nc = st_read(system.file("shape/nc.shp", package="sf"), quiet = TRUE)
gg_nc = ggplot(nc) +
  geom_sf(aes(fill = AREA)) +
  scale_fill_viridis("Area") +
  ggtitle("Area of counties in North Carolina") +
  theme_classic()

plot_gg(gg_nc, multicore = TRUE, width = 6 ,height=2.7, fov = 70)

但是，运行plot_gg行将得到以下错误消息：

if中的错误(% c("text"，“line”)中的%类型){：参数长度为零

知道那里发生了什么事吗？

Answer 1

修改代码以：

theme_set(theme_classic())

gg_nc = ggplot(nc) +
  geom_sf(aes(fill = AREA)) +
  scale_fill_viridis("Area") +
  ggtitle("Area of counties in North Carolina")

plot_gg(gg_nc, multicore = TRUE, width = 6 ,height=2.7, fov = 70)