R:绘制图形(ggplot与autoplot) [英] R: plotting graphs (ggplot vs autoplot)

问题描述

我正在这里的R教程 https://rviews.rstudio.com/2017/09/25/survival-analysis-with-r/

我用于工作的计算机没有互联网访问权限，也没有USB端口-它只有带有某些预装库的R.该教程需要生存"，"ggplot2"，游侠"，"dplyr".和"ggfortify".我在工作中使用的计算机除了ggfortfiy以外，还具有所有这些库.显然地，称为自动绘图"的功能可以被称为自动绘图".必须使用ggfortify库中的内容才能制作本教程中的一些图.

The computer I use for work does not have internet access nor a USB port - it only has R with some preinstalled libraries. The tutorial requires "survival", "ggplot2", "ranger", "dplyr" and "ggfortify". The computer I use for work has all of these libraries EXCEPT ggfortfiy. Apparently, a function called "autoplot" is required from the ggfortify library to make some of the plots in this tutorial.

当我尝试运行本教程中的代码时:

When I try to run the code from the tutorial:

#load libraries
library(survival)
library(ranger)
library(ggplot2)
library(dplyr)

#load data
data(veteran)
head(veteran)

# Kaplan Meier Survival Curve
km <- with(veteran, Surv(time, status))
km_fit <- survfit(Surv(time, status) ~ 1, data=veteran)

#plot(km_fit, xlab="Days", main = 'Kaplan Meyer Plot') #base graphics is always ready


#here is where the error is 
autoplot(km_fit)

我收到以下错误:错误:自动绘图不支持survfit类型的对象.

有人知道如何解决此问题吗?如果没有ggfortify库，是否可以绘制相似的图?可以用ggplot2制作吗?

Does anyone know how to fix this? Is it possible to make similar plots without the ggfortify library? Can it just be made with ggplot2?

在我的个人计算机上，安装ggfortify库后，便可以绘制该图.

On my personal computer, I am able to make this plot once I install the ggfortify library.

(注意:我也没有"survminer"库)

(note: I also do not have the "survminer" library)

谢谢

推荐答案

是的，这是可能的，因为 autoplot 函数在幕后使用了 ggplot2 :

Yes, this is possible, because the autoplot function uses ggplot2 under the hood:

tibble(time = km_fit$time, surv = km_fit$surv, 
       min = km_fit$lower, max = km_fit$upper) %>% 
  ggplot(aes(x = time)) +
  geom_line(aes(y = surv)) +
  geom_ribbon(aes(ymin = min, ymax = max), alpha = 0.3)

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