相关疑难解决方法(0)

如何在地图上的R中以图形方式更改标记大小？如果我将size参数设置为任何数字,它会使它变得相同,尺寸太大.如果我将它映射到我的数据中的变量,那么标记就会很小,以便能够首先区分它们.理想情况下,我想通过映射到变量来增加基本大小并保持比例方面.

可重复的例子:

library(data.table)
library(plotly)
library(dplyr)

sample <- data.table(Region=c("Illinois","Illinois","California","California","Texas","Texas"),
                     code=c("IL","IL","CA","CA","TX","TX"),
                     Group=c("A","B"),
                     Value=rnorm(6, mean=100, sd=6))

sample[Region=="Illinois", c('lat', 'long') := list(40.3363, -89.0022)]
sample[Region=="California", c('lat', 'long') := list(36.17, -119.7462)]
sample[Region=="Texas", c('lat', 'long') := list(31.106, -97.6475)]


x <- list(
  scope = 'usa',
  projection = list(type = 'albers usa'),
  showlakes = F,
  lakecolor = toRGB('lightblue')
)

sample %>%
  plot_geo(
    locationmode='USA-states'
  ) %>%
  add_markers(
    y=~lat, x=~long, hoverinfo="text",
    color=~Group,
    text=~Group, size=~Value
  ) %>%
  layout(
    title='plotly marker map',
    geo=x
  )

我在R中使用了plotly 4.5.2.我创建了一个在变量上调整大小的散点图,问题是这些大小也反映在图例中,这使得它们难以阅读.

我希望我的图形保持不变,唯一的例外是图例中气泡的大小.这些气泡可以设置为全部相同的尺寸或缩放到更小的尺寸.重要的是,图表中的大小必须保持不变.

请在此处找到可重现的代码:

library(plotly)

data <- data.frame(name = c('test1', 'test2', 'test3', 'test4'),
                      x = c(1, 15, 90, 45),
                      y = c(9, 43, 43, 53),
                      size = c(10000, 50000, 90000, 3000),
                      colour = c("rgba(230, 42, 56, 0.3)", "rgba(76, 175, 80, 0.3)",
                                 "rgba(32, 169, 242, 0.3)", "rgba(255, 193, 7, 0.3)")
                      )

plot <- plot_ly(data = data) %>% 
  add_trace(x = ~x,
            y = ~y,
            mode = 'markers',
            type = 'scatter',
            color = ~name,
            marker = list(
              color = ~colour,               
              opacity = 1, …