R Markdown Presentation not loading/ rendering interactive Plotly chart

Question

I am using Plotly with R to create a chart that will be rendered in a R Markdown Presentation With Ioslides, but instead of showing the demo chart from the website like the following:

It is rendering the steps like this:

My code is pretty simple:

---
title: "R Markdown Presentation & Plotly"
author: "Eduardo Almeida"
date: "February 19, 2017"
output: ioslides_presentation
---

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

## Interactive plot with Plotly 

```{r}
library(plotly)
p <- plot_ly(economics, x = ~date, y = ~unemploy / pop)
```

Use suppressPackageStartupMessages({library(plotly)}) to avoid package messages. Then type a p in the last line of your code to display the plot. — Karthik Arumugham
– Karthik Arumugham, Commented Feb 19, 2017 at 16:14

Maximilian Peters · Accepted Answer · 2017-02-19 19:07:47Z

1

As Karthik Arumugham pointed out you need to display the plot, either by entering p or not assigning plot_ly to variable but calling it directly.

I'd suggest to explicitly state the missing variables (type='scatter', mode='markers') instead of suppressing the output messages. In addition you could add {r, warning=F} to get rid of the

Error: attempt to use zero-length variable name

message.

---
title: "R Markdown Presentation & Plotly"
author: "Eduardo Almeida"
date: "February 19, 2017"
output: ioslides_presentation
---

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

## Interactive plot with Plotly 

```{r, warning=F}
suppressPackageStartupMessages({library(plotly)})
library(plotly)
plot_ly(economics, x = ~date, y = ~unemploy / pop, type='scatter', mode='markers')
```

edited Feb 19, 2017 at 19:07

answered Feb 19, 2017 at 17:02

Maximilian Peters

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2 Comments

Not The Real Hemingway Over a year ago

Thank you, but it's still not working. It's still shoing the same message as in the second image.

Maximilian Peters Over a year ago

Did you add suppressPackageStartupMessages({library(plotly)}) before the importing plotly?

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