I am trying to define a set of variables to control on/off of the execution of chunks in my Rmarkdown. However, I noticed that with the variable1 = FALSE and {r chunk1, eval = variable1}, the chunk will be still executed (by hitting "Run All Chunks" button). For knitting, this approach works, and the chunk will not be evaluated. Is there anything that I have missed.
For example, the following Rmarkdown will execute pressure1 and plot the pressure with eval = varaible1, but eval =FALSE worked for pressure2 and disable the chunk.
---
title: "Untitled"
output: html_document
---
```{r setup, include=FALSE}
knitr::opts_chunk$set(echo = TRUE)
```
```{r switches, include=FALSE}
variable1 = FALSE
```
```{r cars}
summary(cars)
```
```{r pressure1, eval=variable1}
print("pressure1")
plot(pressure)
```
```{r pressure2, eval=FALSE}
print("pressure2")
plot(pressure)
```
Related
In rmarkdown, we can create a catalog using 'toc: yes'，using the hyperlink, i can link to subtitle.
Now, i want to link subtitle to catalog ? (in the final html, i with to click subtitle,then back to top of the file)
---
title:'my markdown file'
output:
html_document:
toc: yes
---
```{r setup, include=FALSE}
knitr::opts_chunk$set(echo = TRUE)
```
## subtitle 1 :R Markdown
```{r cars}
summary(cars)
```
## subtitle 2:Including Plots
```{r pressure, echo=FALSE}
plot(pressure)
```
You may enclose subheader in an HTML tag <a>.
---
title: 'my markdown file'
output:
html_document:
toc: yes
---
```{r setup, include=FALSE}
knitr::opts_chunk$set(echo = TRUE)
```
## subtitle 1 :R Markdown
```{r cars}
summary(cars)
as.matrix(rnorm(100))
```
## subtitle 2:Including Plots
```{r pressure, echo=FALSE}
plot(pressure)
```
When I want to print some tables in html report from knitr, sometime I use knitr::kable(), and other times I use htmltable::htmltable.
When I use bookdown::html_document2 in the YAML numbering of tables from kable is automatic. However, it is not for htmltable, and I need to use options(table_counter = TRUE), which generates another numbering mechanism. Is there a way to unify it?
Example:
---
title: "Untitled"
author: "Guilherme"
date: "10/26/2020"
output:
bookdown::html_document2
---
```{r setup, include=FALSE}
knitr::opts_chunk$set(echo = TRUE)
options(table_counter = TRUE)
```
```{r cars}
library(htmlTable)
htmlTable(mtcars[1:5,1:5],
caption = "XX")
```
```{r}
htmlTable(mtcars[1:5,1:5],
caption = "XX")
```
```{r}
library(knitr)
kable(mtcars[1:5,1:5],
caption = "XX")
```
Outputs:
Thanks!
How can one create a full width figure when using the twocolumn class option in knitr / R / RMarkdown / LaTex?
Based on the Knitr documentation, I've tried two approaches. Nothing short of editing the .tex file has worked for me so far.
This:
---
output: pdf_document
classoption: twocolumn
header-includes:
- \usepackage{lipsum}
---
```{r setup, include=FALSE}
knitr::opts_chunk$set(echo = TRUE)
```
\lipsum[1-2]
```{r fig.env = "figure*", fig.cap = "Test"}
plot(runif(10))
```
\lipsum[3-5]
```{r fig.fullwidth = T}
plot(runif(10))
```
Results in this:
Yihui has fixed this in the development version of knitr. Yihui's response:
The option fig.env = 'figure*' should be respected now (in the dev version of knitr). But the plot will float to a new page. I guess that is a LaTeX issue orthogonal to knitr. Thanks!
Don't forget that you must include a caption for this to work.
---
output: pdf_document
classoption: twocolumn
header-includes:
- \usepackage{lipsum}
---
```{r setup, include=FALSE}
knitr::opts_chunk$set(echo = TRUE)
```
\lipsum[1-3]
```{r fig.env = "figure*"}
plot(runif(10))
```
\lipsum[2]
```{r fig.env = "figure*", fig.cap = ""}
plot(runif(10))
```
\lipsum[2]
I have the r markdown document below. I would like to hide page 2 if parameter "P" is not equal to A.
So the result would be if parameter P != A then only 3 pages are produced.
Is this possible somehow?
---
title: "Untitled"
output:
pdf_document:
toc: yes
params:
P: A
---
```{r setup, include=FALSE}
knitr::opts_chunk$set(echo = TRUE)
```
\newpage
## PAGE2
this is text for page 2
this is text for page 2
```{r cars}
summary(cars)
```
\newpage
## PAGE3
this is text for page 3
```{r pressure, echo=FALSE}
plot(pressure)
```
\newpage
## PAGE4
this is text for page 4
You could comment the section out based on P value. Here is a bit of a hackish way to do it: surround the section with \iffalse/\fi. Note that the R code inside the section still needs to be valid for this to work (it will be compiled by knitr, but ignored by latex).
```{r, echo=FALSE, results='asis'}
if(params$P != "A")
cat("\\iffalse")
```
## PAGE2
this is text for page 2
this is text for page 2
```{r cars}
summary(cars)
```
\newpage
```{r, echo=FALSE, results='asis'}
if(params$P != "A")
cat("\\fi")
```
I'm trying to produce a flexdashboard with R and want to show code in my presentation, but this seems not to work.
Here a little example:
---
title: "Test"
output:
flexdashboard::flex_dashboard
---
```{r setup, include=FALSE}
library(flexdashboard)
```
### Code
```{r, eval=FALSE, include=TRUE}
plot(iris$Sepal.Length, iris$Sepal.Width)
```
### Output
```{r, fig.align='center', echo = FALSE}
plot(iris$Sepal.Length, iris$Sepal.Width)
```
Even other chuck options like fig.show = 'hide' will not work.
Is it possible to show code in a R-chuck in flexdashboard?
The code highlights would be a benefit instead of a plain text.
If you want both the code and plot to show set the chunk options to: echo = true
If you just want code set it to: echo=TRUE, eval=FALSE
---
title: "Test"
output:
flexdashboard::flex_dashboard
---
```{r setup, include=FALSE}
library(flexdashboard)
```
### Code
```{r, echo=TRUE, eval=FALSE}
plot(iris$Sepal.Length, iris$Sepal.Width)
```
### Code and Plot
```{r, echo=TRUE}
plot(iris$Sepal.Length, iris$Sepal.Width)
```
### Plot
```{r, fig.align='center', echo = FALSE}
plot(iris$Sepal.Length, iris$Sepal.Width)
```
It won't show as a panel in your presentation, but to add a </> Source Code button to your dashboard, include source_code: embed in your YAML.
---
title: "Example"
output:
flexdashboard::flex_dashboard:
source_code: embed
---