手动更改 R 中 Plotly Bubble Map 的气泡大小

Question

我目前正在尝试手动更改 Plotly 气泡图的气泡大小。我成功地使用提供的数据更改了地图的颜色，但我无法使用相同的逻辑来更改大小。要更改颜色，我只需调用：colors_wanted <- c("red", "blue", "black", "pink") 并将此命令传递给 plot_ly 内的 colors。您认为在这种情况下 sqrt 可以更改尺寸而不是使用公式来声明尺寸吗？

library(plotly)
df <- read.csv('https://raw.githubusercontent.com/plotly/datasets/master/2014_us_cities.csv')
df$hover <- paste(df$name, "Population", df$pop/1e6, " million")

df$q <- with(df, cut(pop, quantile(pop), include.lowest = T))
levels(df$q) <- paste(c("1st", "2nd", "3rd", "4th"), "Quantile")
df$q <- as.ordered(df$q)

g <- list(scope = 'usa',projection = list(type = 'albers usa'),showland = TRUE,landcolor = toRGB("gray85"),
subunitwidth = 1, countrywidth = 1, subunitcolor = toRGB("white"),countrycolor = toRGB("white"))

plot_ly(df, lon = lon, lat = lat, text = hover,
  marker = list(size = sqrt(pop/10000) + 1, line = list(width = 0)),
  color = q, colors= colors_wanted, type = 'scattergeo', locationmode = 'USA-states') %>%
  layout(title = '2014 US city populations<br>(Click legend to toggle)', geo= g)

Answer 1

如果您希望大小与四分位数相对应，则此方法可行（并且您可以对此进行任意数量的变体以使大小在分析上更有意义）：

plot_ly(df, lon = lon, lat = lat, text = hover, size = as.numeric(df$q), 
        #marker = list(size = sqrt(pop/10000) + 1, line = list(width = 0)),
        color = q, colors= colors_wanted, type = 'scattergeo', locationmode = 'USA-states') %>%
  layout(title = '2014 US city populations<br>(Click legend to toggle)', geo= g)

这里有一个有趣的变化：

plot_ly(df, lon = lon, lat = lat, text = hover, size = aggregate(df$pop,by=list(df$q),sqrt)$x,
        #marker = list(size = sqrt(pop/10000) + 1, line = list(width = 0)),
        color = q, colors= colors_wanted, type = 'scattergeo', locationmode = 'USA-states') %>%
  layout(title = '2014 US city populations<br>(Click legend to toggle)', geo= g)

手动更改 R 中 Plotly Bubble Map 的气泡大小

Manually changing the size of the Bubbles for Plotly Bubble Map in R

formatting

bubble-chart

r

ggplot2

plotly