Plot width/height not obeyed after RStudio upgrade

Question

I'm using knitr with RStudio, generating html reports. My report contains many plots of various sizes, some are small and some are much wider. I use fig.width and fig.height per chunk to specify the size. Till yesterday I used RStudio 0.98.50* and it was rendered just perfectly - each plot with its own size, horizontal scrollbar appeared if some plots were too big. However I wanted to get TOC added to the reports and thus upgraded to the latest RStudio 0.98.1091.

Since the upgrade, all the fig.width/fig.height chunk settings seem to be just ignored. The HTML shows all plots of the same size, scalled, no scrolling. If I use the comment  all gets back to normal and looks like before but the TOC is gone.

Code Example

--- 
title: "Example"
output: html_document
---

<!-- rmarkdown v1 -->

```{r}
library(NMF)

# Generate random data
n <- 50; p <- 20
x <- abs(rmatrix(n, p, rnorm, mean=4, sd=1))
x[1:10, seq(1, 10, 2)] <- x[1:10, seq(1, 10, 2)] + 3
x[11:20, seq(2, 10, 2)] <- x[11:20, seq(2, 10, 2)] + 2
rownames(x) <- paste("ROW", 1:n)
colnames(x) <- paste("COL", 1:p)
```

```{r plot_small, fig.width=10, fig.height=25}
aheatmap(x)
```

```{r plot_big, fig.width=100, fig.height=45}
aheatmap(x)
```

If  is present, the result HTML looks as expected - plot_small is small, plot_big is much wider, horizontal scrollbar appears. If  is removed the result HTML looks very different - both plots have the same size, the plot_big is scaled, no scrolling. I think probably explained by those lines in the HTML:

.main-container {
   max-width: 940px;
   margin-left: auto;
   margin-right: auto;
 }
 img { 
   max-width:100%; 
   height: auto; 
 }

I'd appreciate any ideas of either how to get TOC generated with v1 or plot size set as requested with v2. Thanks

Yihui Xie Yihui Xie · Accepted Answer · 2015-01-08T21:17:58

You can override the CSS rule, e.g. add this to your document

<style>
 img { 
   max-width: none; 
 }
</style>

or use a custom CSS file (see the documentation for html_document).

Plot width/height not obeyed after RStudio upgrade

Code Example

1 Answers