I have a large report that I am running through R Markdown. The report has a data frame. At the beginning of the script, the data frame is filtered. After that, it does lots of manipulation and interpretation.

Currently, I change what I filter for and knit each report individually. I want to automate this process so that I can provide a vector of terms to filter with and the reports are generated.

Here is an example:

---
title: "Create markdown htmls with loop"
author: "Nathan Roe"
date: "2/17/2022"
output: html_document
---

library(dplyr)

my_df <- data.frame(my_letters = letters[1:5], my_numbers = 1:5)

my_df %>% filter(my_letters == "a")

I want to generate reports for a, b, c, d, and e. Currently, I have to go in and change what is being filtered for. As shown in the example above, I am filtering for "a". After that, I would have to change it to filter for "b", and so on. Is there a way to automate this, so that I provide a vector a, b, c, d, and e and reports are generated based on those filters and htmls are generated using the letter as the title. For example, I provide my_letters <- letters[1:5] and the script creates a.html, b.html, c.html, d.html, and e.html.

It seems similar to this, ...