问题
I have an inline code enclosed with single backticks on a single line. However,
The cohort had r echo = FALSE load("../data/cohort.rda") nrow(cohort) subjects.
is not executed and thus gives me this output in html and pdf:
The cohort had r echo = FALSE load("../data/cohort.rda") nrow(cohort) subjects.
I want this output: The cohort had 477 subjects.
When I exclude echo=FALSE, I get this message:
Quitting from lines 33-35 (Manuscript.Rmd) Error in base::parse(text = code, srcfile = NULL) : 1:25: unexpected symbol 1: load("../data/cohort.rda") nrow ^
Calls: ... inline_exec -> withVisible -> eval -> parse_only -> Execution halted
回答1:
The inline R code needs to be a single R statement, which you can achieve by surrounding the entire code chunk with brackets {} and separating commands with semicolons. I saved a 3-row data frame named tmp to file tmp.rda, rendered an Rmd file with this line
There are `r {load("tmp.rda"); nrow(tmp)}` observations
and got the expected output.
来源：https://stackoverflow.com/questions/40519890/r-markdown-inline-code-not-executed