如何移除R语言plotly库绘制treemap图表时出现的四周多余边框

你可以通过调整三个核心参数完全消除treemap的各类边框：

• 关闭顶部层级路径导航条：设置pathbar = list(visible = FALSE)，可消除你观察到的较宽顶部边框
• 清空画布边距：在layout中设置margin = list(l = 0, r = 0, t = 0, b = 0)，可消除左右和底部的窄边框留白
• 消除色块描边：设置marker = list(line = list(width = 0))，可去掉不同色块之间的分隔线（如果需要保留轻微分隔效果，可将值改为0.1~0.5之间的小数）

完整可运行的示例代码如下：

library(plotly)

# 构造示例测试数据
test_data <- data.frame(
  category = c("电子产品", "服装", "食品", "手机", "电脑", "男装", "女装", "零食", "生鲜"),
  parent = c("", "", "", "电子产品", "电子产品", "服装", "服装", "食品", "食品"),
  value = c(500, 300, 200, 250, 250, 150, 150, 120, 80)
)

# 绘制无边框treemap
plot_ly(
  data = test_data,
  type = "treemap",
  labels = ~category,
  parents = ~parent,
  values = ~value,
  # 关闭顶部路径导航条
  pathbar = list(visible = FALSE),
  # 去除色块间的描边
  marker = list(line = list(width = 0))
) %>%
  layout(
    # 清除画布四周的边距留白
    margin = list(l = 0, r = 0, t = 0, b = 0)
  )

内容的提问来源于stack exchange，提问作者Jonas Schnidrig