Rstudio will not knit

Question

Rstudio will not knit. I have been using it for a few weeks in a course.

When I try to knit it executes until it comes to some code and it stops. The code is

ggplot(data = gss, aes(x = year, fill = degree)) + geom_bar()

The message is

could not find function "ggplot"

This happens with other functions as well. With the code commented out is will run and produce an HTML file.

I have reinstalled R and Rstudio twice. I have had difficulty with my AV software (Bitdefender) blocking the install of some of the apps. The software is a new version updated a couple of weeks ago.

Answer 1

请在文档中加载包（R Markdown？你没说），然后再使用其中的任何函数，例如library(ggplot2) 。