---

output: github_document

---

```{r setup, include=FALSE}

knitr::opts_chunk$set(echo = TRUE)

```

Dear Participants,

We are so excited that you will be joining our tutorial "Graphing multivariate categorical data: The how, what and why of mosaic plots and alluvial diagrams" on Wednesday, July 7 from 7:45pm-10:15pm UTC.

In order to get the most out of the workshop, please install the following or update to the latest version in advance.

**ggalluvial** (0.12.3)

**RColorBrewer** (1.1-2)

**scales** (1.1.1)

**tidyverse** (1.3.0)

**vcd** (1.4-8)

Next please run the following code examples to make sure the above packages are working. The graphs shown below should appear.

```{r, fig.width=5, fig.height=3}

library(vcd)

mosaic(Titanic)

mosaic(HairEyeColor)

```

```{r, fig.width=5, fig.height=3}

library(tidyverse)

library(ggalluvial)

ggplot(as.data.frame(Titanic),

aes(y = Freq,

axis1 = Class, axis2 = Sex, axis3 = Age,

fill = Survived)) +

geom_alluvium() +

scale_x_discrete(limits = c("Class", "Sex", "Age"))

```

Tutorial materials will be added soon to: https://github.com/jtr13/graphcat

Don't hesitate to contact us in advance if you have any questions:

Joyce Robbins [email protected]

Ludmila Janda [email protected]

Enjoy the conference!

best,

Joyce and Ludmila