R：更改森林图中的 x 轴刻度标记标签

Question

library(forestplot)
# Cochrane data from the 'rmeta'-package
cochrane_from_rmeta <- 
  structure(list(
    mean  = c(NA, NA, 0.578, 0.165, 0.246, 0.700, 0.348, 0.139, 1.017, NA, 0.531), 
    lower = c(NA, NA, 0.372, 0.018, 0.072, 0.333, 0.083, 0.016, 0.365, NA, 0.386),
    upper = c(NA, NA, 0.898, 1.517, 0.833, 1.474, 1.455, 1.209, 2.831, NA, 0.731)),
    .Names = c("mean", "lower", "upper"), 
    row.names = c(NA, -11L), 
    class = "data.frame")

tabletext<-cbind(
  c("", "Study", "Auckland", "Block", 
    "Doran", "Gamsu", "Morrison", "Papageorgiou", 
    "Tauesch", NA, "Summary"),
  c("Deaths", "(steroid)", "36", "1", 
    "4", "14", "3", "1", 
    "8", NA, NA),
  c("Deaths", "(placebo)", "60", "5", 
    "11", "20", "7", "7", 
    "10", NA, NA),
  c("", "OR", "0.58", "0.16", 
    "0.25", "0.70", "0.35", "0.14", 
    "1.02", NA, "0.53"))

forestplot(tabletext, 
           cochrane_from_rmeta,new_page = TRUE,
           is.summary=c(TRUE,TRUE,rep(FALSE,8),TRUE),
           clip=c(0.1,2.5), 
           xlog=TRUE, 
           col=fpColors(box="royalblue",line="darkblue", summary="royalblue"))

我有一个森林图，我的 x 轴刻度标记标签间距有点奇怪，我想将其更改为每个刻度标记彼此相距 0.1。另外，有谁知道 forestplot 如何决定刻度线的间距？

Answer 1

根据 forestplot 文档 (https://cran.r-project.org/web/packages/forestplot/vignettes/forestplot.html#ticks-and-grids)，您有两个选择。

您可以在 forestplot() 表达式中手动设置您的刻度，例如xticks = c(-.1, -0.05, 0, .05)
您可以创建一个序列，例如xticks <- seq(from = -0.08, to = 2.50, by = 0.1) 并使用 xticks = xticks

forestplot()

R：更改森林图中的 x 轴刻度标记标签

R: changing x-axis tick mark labels in forestplot

visualization

r

forestplot