Dynamic Markdown YAML

Kevin Feasel



Steph Locke shows how to use the params section of a YAML header to enable parameter reuse:

You may already know the trick about making the date dynamic to whatever date the report gets rendered on by using the inline R execution mode of rmarkdown to insert a value.

title: "My report"
date: "`r Sys.Date()`"
output: pdf_document

What you may not already know is that YAML fields get evaluated sequentially so you can use a value created further up in the params section, to use it later in the block.

Click through to see how it’s done.

Related Posts

R Model Compression

I have a post showing off some of the value of compressing R models: So right now, we’re burning roughly 200K per model.  My stated goal is to be able to store several years worth of data for 10 million products.  Let’s say that I need 10 million products in ProductModel and 1 billion rows […]

Read More

Neural Networks From Scratch

Ilia Karmanov explains neural nets and shows how to build one in R: Hence, my motivation for this post is two-fold: Understanding (by writing from scratch) the leaky abstractions behind neural-networks dramatically shifted my focus to elements whose importance I initially overlooked. If my model is not learning I have a better idea of what […]

Read More