单色绘图

Question

如何渲染只有一种颜色的 plotly 地图。在下面的示例中，我希望所有状态的填充都为红色，或 #FF0000.

library(plotly)
library(tidyverse)

dat <- data.frame(state = state.abb)

plot_ly(dat,
        type = "choropleth",
        locationmode = 'USA-states',
        locations = ~state) %>% 
  add_trace(color = "red") %>%
  layout(geo = list(
    projection = list(
      type = "albers usa")))

Answer 1

根据我对 plotly 的理解 documentation 这是实现它的一种方法（choropleth 是一种热图，但你想要所有颜色都使用一种颜色）：

library(plotly)

dat <- data.frame(state = state.abb)

plot_ly(dat,
        type = "scattergeo",
        mode = 'none',
        locationmode = 'USA-states',
        locations = ~state) %>%
 layout(geo = list(landcolor = "#FF0000",
                   showland = TRUE,
                   projection = list(type = "albers usa")))

单色绘图

Single color plotly map

r

plotly