Adjust the output width of R Markdown HTML output

r-markdown knitr
Matt Weller picture Matt Weller · Mar 13, 2013 · Viewed 68.9k times · Source

I am producing an HTML output but I am having issues with the output width of R code output.

I'm able to adjust the figure width with no difficulty but when I try to write a data table or the factor loadings, R is outputting at a fixed width which is only about a third of my screen width. This results in the columns of the table being split up rather than all of the columns displayed in a single table.

Here is a reproducible example:

---
output: html_document
---

# Title

```{r echo = FALSE, fig.width=16, fig.height=6}
x = matrix(rnorm(100),ncol=10)
x
plot(x)
```

enter image description here

Answer

A5C1D2H2I1M1N2O1R2T1 picture A5C1D2H2I1M1N2O1R2T1 · Mar 13, 2013

Add this at the start of your document:

```{r set-options, echo=FALSE, cache=FALSE}
options(width = SOME-REALLY-BIG-VALUE)
```

Obviously, replace SOME-REALLY-BIG-VALUE with a number. But do you really want to do all that horizontal scrolling?

Your output is probably being wrapped somewhere around 80 characters or so.

Related questions

R - Markdown avoiding package loading messages

I have been using Knitr via R-Studio, and think it is pretty neat. I have a minor issue though. When I source a file in an R-Chunk, the knitr output includes external comments as follows: + FALSE Loading required package: ggplot2 + …

Read More
Hiding the R code in Rmarkdown/knit and just showing the results

In my R Markdown documents, I sometimes want to just generate a report without showing the actual code (specially when I send it to my boss). How can I hide the R code and just show the graph and results? …

Read More
R Markdown - changing font size and font type in html output

I am using R Markdown in RStudio and the knit HTML option to create HTML output. However, the font used in the ouput for plain text blocks is rather small and I would like to change it to a differnt …

Read More