r-markdown

问题 I try to create Code snippet programmatically through a provided Parameter but Keep the target programming language dynamic. What i tried: Following https://stackoverflow.com/a/64855295/8538074 i know i could use opts <- knitr::opts_chunk$get() which will include an engine opts$engine which could be tried to bet set to "SQL". I guess that sthg like that should work because of: https://github.com/yihui/knitr-examples/blob/master/115-engine-sql.md https://github.com/yihui/knitr-examples/blob

问题 I try to create Code snippet programmatically through a provided Parameter but Keep the target programming language dynamic. What i tried: Following https://stackoverflow.com/a/64855295/8538074 i know i could use opts <- knitr::opts_chunk$get() which will include an engine opts$engine which could be tried to bet set to "SQL". I guess that sthg like that should work because of: https://github.com/yihui/knitr-examples/blob/master/115-engine-sql.md https://github.com/yihui/knitr-examples/blob

问题 I try to create Code snippet programmatically through a provided Parameter but Keep the target programming language dynamic. What i tried: Following https://stackoverflow.com/a/64855295/8538074 i know i could use opts <- knitr::opts_chunk$get() which will include an engine opts$engine which could be tried to bet set to "SQL". I guess that sthg like that should work because of: https://github.com/yihui/knitr-examples/blob/master/115-engine-sql.md https://github.com/yihui/knitr-examples/blob

问题 I am trying to create an analysis report in Rmarkdown and I am stuck here , below is the example of what I am working on --- output: "pdf_document" --- one small paragraph here \newline another paragraph below the image here if i use \newline my image is placed as expected between the paragraphs but the caption is missing else if i remove \newline my image is randomly placed at the bottom after rendering the document. Kindly help me , I tried placing extra

问题 I have the following issue, once knitting the Rmarkdown in Rstudio to PDF, my tables appear not in the position where they are in Rmarkdown file, but on the top of the page. I tried to add: header-includes: - \usepackage{float} and ```{r setup, include=FALSE} knitr::opts_chunk$set(... fig.pos = "H") ``` But it didn't work. R and Rstudio run on Linux, the LaTeX engine is "pdflatex" Fully reproducible example: --- title: "Untitled" output: pdf_document header-includes: - \usepackage{float} ---

问题 How can I get a printed error message in RMarkdown to collapse into a single block when the error message itself was modified to print in red? In this example collapse = T works as expected. ```{r setup, include=FALSE} knitr::opts_chunk$set(echo = TRUE, collapse = TRUE) ``` ```{r error=T} x <- c(1,2,3,4,5) x * 10 X * 10 ``` In this example, I modified the error message to be formatted in red (based on this answer). But then it doesn't collapse with the rest: ```{r setup, include=FALSE} knitr:

问题 Very simple question: I love writing R notebooks/markdowns, and with something like highlight: tango I can give background color to codes when I knit my notebook to pdfs. However, I don't know how to give colored backgrounds or colored fonts to printed outputs in R. For example, suppose I have the following chunk. ```{r, echo = FALSE} writeLines("Help") ``` I'd like to see the word Help to be highlighted, say in red font with gray background. How can I achieve this? Many thanks in advance.

问题 Very simple question: I love writing R notebooks/markdowns, and with something like highlight: tango I can give background color to codes when I knit my notebook to pdfs. However, I don't know how to give colored backgrounds or colored fonts to printed outputs in R. For example, suppose I have the following chunk. ```{r, echo = FALSE} writeLines("Help") ``` I'd like to see the word Help to be highlighted, say in red font with gray background. How can I achieve this? Many thanks in advance.

问题 Using R Markdown to output a pdf. kable() works great but when I add longtable=T the caption no longer extends the full width of the table. I can't seem to find an argument that will control the caption details here. I can move the caption to be output for each code chunk but would rather use the built in functionality within kable if possible. Thanks! --- title: "test" author: "" date: "September 6, 2017" output: pdf_document: latex_engine: xelatex --- ```{r setup, include=FALSE} knitr::opts

问题 Similar to how to create a loop that includes both a code chunk and text with knitr in R i try to get text and a Code snippet created by a Loop. Something along this: --- title: Sample output: html_document params: test_data: list("x <- 2", "x <- 4") --- for(nr in 1:3){ cat(paste0("## Heading ", nr)) ```{r, results='asis', eval = FALSE, echo = TRUE} params$test_data[[nr]] ``` } Expected Output would be: What i tried: I tried to follow: https://stackoverflow.com/a/36381976/8538074. But