ggplot Part IV

.title[
# ggplot Part IV
]
.subtitle[
## Workshop on Data Visualization in R
]
.author[
### Lokesh Mano • 02-Feb-2024
]
.institute[
### NBIS, SciLifeLab
]

---

---

## Saving plots

```r
p <- ggplot(iris,aes(Petal.Length,Sepal.Length,color=Species))+
 geom_point()
```

* `ggplot2` plots can be saved just like base plots

```r
png("plot.png",height=5,width=7,units="cm",res=200)
print(p)
dev.off()
```

* `ggplot2` package offers a convenient function

```r
ggsave("plot.png",p,height=5,width=7,units="cm",dpi=200,type="cairo")
```

* Use `type="cairo"` for nicer anti-aliasing  
* Note that default units in `png` is pixels while in `ggsave` it's inches

---

## Extensions

* [**gridExtra**](https://cran.r-project.org/web/packages/gridExtra/index.html): Extends grid graphics functionality
* [**ggpubr**](http://www.sthda.com/english/rpkgs/ggpubr/): Useful functions to prepare plots for publication  
* [**cowplot**](https://cran.r-project.org/web/packages/cowplot/vignettes/introduction.html): Combining plots  
* [**ggthemes**](https://cran.r-project.org/web/packages/ggthemes/vignettes/ggthemes.html): Set of extra themes  
* [**ggthemr**](https://github.com/cttobin/ggthemr): More themes  
* [**ggsci**](https://cran.r-project.org/web/packages/ggsci/vignettes/ggsci.html): Color palettes for scales  
* [**ggrepel**](https://cran.r-project.org/web/packages/ggrepel/vignettes/ggrepel.html): Advanced text labels including overlap control  
* [**ggmap**](https://github.com/dkahle/ggmap): Dedicated to mapping  
* [**ggraph**](https://github.com/thomasp85/ggraph): Network graphs  
* [**ggiraph**](http://davidgohel.github.io/ggiraph/): Converting ggplot2 to interactive graphics

---

## Help

* [**ggplot2 official reference**](http://ggplot2.tidyverse.org/reference/)  
* [**The R cookbook**](http://www.cookbook-r.com/)  
* [**StackOverflow**](https://stackoverflow.com/)  
* [**RStudio Cheatsheet**](https://www.rstudio.com/resources/cheatsheets/)  
* [**r-statistics Cheatsheet**](http://r-statistics.co/ggplot2-cheatsheet.html)  
* [**ggplot2 GUI**](https://site.shinyserver.dck.gmw.rug.nl/ggplotgui/)  
* Numerous personal blogs, r-bloggers.com etc.

---

# Thank you. Questions?

<hr>

Built on : 02-Feb-2024 at 11:06:39

2024 • [SciLifeLab](https://www.scilifelab.se/) • [NBIS](https://nbis.se/)
]