R Tips and Techniques

Odds and Ends of Things I Have Found

I have been saving R-related snippets in Evernote. What I will do here is pick out some of the ones that I use most often to try to organize them in a more curated fashion.

Mapping

Leaflet

scale on leaflet map
http://www.r-bloggers.com/interactive-mapping-with-leaflet-in-r/
leaflet map sample: http://leaflet-extras.github.io/leaflet-providers/preview/

Tables

How to Make Beautiful Tables

Census

dot densisty maps

Network Analysis & Twitter

Introduction to Network Analysis with R
good tutorial to networks and https://www.frontiersin.org/articles/10.3389/fpsyg.2018.01742/full)
network of faculty hiring

Github Techniques

GitHub merge
pull request helpers

How to chabnge package name

ggplot2

ggridges
geofacet

really great collection of tips and tricks: https://github.com/z3tt/outlierconf2021    tutorial: https://z3tt.github.io/OutlierConf2021/       Figuring out what ggplot2 palettes.

scales::hue_pal()(2)

[1] "#F8766D" "#00BFC4"

scales::show_col(scales::hue_pal()(2))

scales::show_col(scales::hue_pal(direction = -1)(2)) |> print()

NULL

scio palettes: https://github.com/thomasp85/scico

sankey plots

Sankey plots.  https://cran.r-project.org/web/packages/ggalluvial/vignettes/ggalluvial.html
in plotly: https://plot.ly/r/sankey-diagram/
and see https://matthewdharris.com/2017/11/11/a-brief-diversion-into-static-alluvial-sankey-diagrams-in-r/
And https://david.frigge.nz/posts/2019-10-rugby-world-cup/

Markdown, HTML, and Hugo Shortcodes

link to Hugo shortcodes

To insert a figure:

<figure> 
  <img  src="/img/canopy_bed.png" alt="Canopy Bed" width="304" height="228">
  <figcaption>Isn't this better than camping?</figcaption>
</figure> 

 img style="float: right;" src="/img/taxi.png"> 
<figure.right  > 
  <img  src="/img/taxi.png" alt="taxi phone number" ">
  <figcaption>Isn't this better than camping?</figcaption>
</figure>

Figure which contains a link in the caption:

<figure> 
  <img  src="https://www.ldwa.org.uk/ldp/images/TF/517-1-L.png" alt="Canopy Bed">
  <figcaption>Elevation along the <a href="https://www.ldwa.org.uk/ldp/members/show_path.php?menu_type=S&path_name=West+Highland+Way">West Highland Way (Long Distance Walkers Association)</a> </figcaption>
</figure> 

Floating figure via html:

<!-- Margin parameters: top right bottom left -->
<figure style="float: left;margin:5px 10px 8px 5px">
  <img  src="/img/canopy_bed.png" alt="Canopy Bed" width="304" height="228">
  <figcaption>More comfortable than camping?</figcaption>
</figure> ```

#### Rmarkdown tips from Indrajeet Patil @patilindrajeets 

see [these tweets](https://indrajeetpatil.github.io/RmarkdownTips/).

[Hugo figure shortcode](https://gohugo.io/content-management/shortcodes/#figure)

and {{%/* figure src=“/img/taxi.png#floatright” caption=“Need a taxi Hadrians Wall Path?” */%}} img style=“float: right;” src=“/img/taxi.png”> <figure.right > <img src=“/img/taxi.png” alt=“taxi phone number” “>

Isn’t this better than camping?

{{< tweet 1390602863651573760 >}}

markdown code for figure: (html parameters within curly braces)

{{%/* figure src=“/img/taxi.png#floatright” caption=“Need a taxi Hadrians Wall Path?” */%}}

Have to use shortcode function to embed shortcode from RMarkdown: blogdown::shortcode(“figure”, src = “/img/taxi.png#floatright”, caption = “Called using shortcode function”) ```

{{% figure src="/img/taxi.png#floatright" caption="Called using shortcode function" %}}

workflow for blogdown and netlify
a spoonful of hugo

Markdown for footnote that contains a link

[^1] – put this where the footnote appears
[^1]: The footnote is contained in this line of text and can include more markdown formatting.

Regular Expressions

Some tips from the Jumping Rivers blog

Reuse