CODEWITHSUNDEEP
rr-markdownknitr
Mark
Mark

Reputation: 10984

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?

For example:

---
output: html_document
---

```{r fig.width=16, fig.height=6}
plot(cars)
```

This shows both the commands and the plot. How can I remove the commands from my HTML report?

Upvotes: 100

Views: 183350

Answers (4)

Mikey Harper
Mikey Harper

Reputation: 15419

Just aggregating the answers and expanding on the basics. Here are three options:

1) Hide Code (individual chunk)

We can include echo=FALSE in the chunk header:

```{r echo=FALSE}
plot(cars)
```

2) Hide Chunks (globally).

We can change the default behaviour of knitr using the knitr::opts_chunk$set function. We call this at the start of the document and include include=FALSE in the chunk header to suppress any output:

---
output: html_document
---

```{r include = FALSE}
knitr::opts_chunk$set(echo=FALSE)
```

```{r}
plot(cars)
```

3) Collapsed Code Chunks

For HTML outputs, we can use code folding to hide the code in the output file. It will still include the code but can only be seen once a user clicks on this. You can read about this further here.

---
output:
  html_document:
    code_folding: "hide"
---


```{r}
plot(cars)
```

enter image description here

Upvotes: 56

bud.dugong
bud.dugong

Reputation: 759

Alternatively, you can also parse a standard markdown document (without code blocks per se) on the fly by the markdownreports package.

Upvotes: 1

Geoffrey Stoel
Geoffrey Stoel

Reputation: 1320

Might also be interesting for you to know that you can use:

{r echo=FALSE, results='hide',message=FALSE}
a<-as.numeric(rnorm(100))
hist(a, breaks=24)

to exclude all the commands you give, all the results it spits out and all message info being spit out by R (eg. after library(ggplot) or something)

Upvotes: 57

Dirk is no longer here
Dirk is no longer here

Reputation: 368519

Sure, just do

```{r someVar, echo=FALSE}
someVariable
```

to show some (previously computed) variable someVariable. Or run code that prints etc pp.

So for plotting, I have eg

### Impact of choice of ....
```{r somePlot, echo=FALSE}
plotResults(Res, Grid, "some text", "some more text")
```

where the plotting function plotResults is from a local package.

Upvotes: 87

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