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R in 3 Months (Spring 2025)

Parameterized Reporting, Part 3

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View code shown in video 
library(quarto)
library(tidyverse)
library(gapminder)

countries <-
  gapminder |>
  distinct(country) |>
  pull(country) |>
  as.character()

reports <-
  tibble(
    input = "example-report.qmd",
    output_file = str_glue("{countries}.html"),
    execute_params = map(countries, ~ list(country = .))
  )

pwalk(reports, quarto_render)

Your Turn

  1. Open the file called render-part-2.R.

  2. Replace all instances of TODO with the correct text.

  3. Render your reports.

Have any questions? Put them below and we will help you out!

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Amalie Baisgaard

Amalie Baisgaard • June 4, 2024

I dont think I get the right results. Despite using the code from the "Solution" folder, I get all the different HTML files but the all only show data for New Zealand and Australia. The names are correct for the different continents and filenames, bit the data in the graph is only New Zealand and Australia.

What have I done wrong?

Here is the code:

library(quarto)
library(tidyverse)
library(gapminder)

continents <-
  gapminder |>
  distinct(continent) |>
  pull(continent) |>
  as.character()

reports <-
  tibble(
    input = "report.qmd",
    output_file = str_glue("{continents}.html"),
    execute_params = map(continents, ~list(continent = .))
  )

pwalk(reports, quarto_render)
David Keyes

David Keyes Founder • June 4, 2024

I actually think this was an error on my part. Please go in and change the YAML to this:

---
title: "Population Report"
format: 
  html:
    embed-resources: true
execute: 
  echo: false
  warning: false
  message: false
---

The line that says embed-resources: true should fix this for you!

Amalie Baisgaard

Amalie Baisgaard • June 5, 2024

Hi David

Should the YAML you send go to the "report.qmd" or the "render-part-2.R" file?

David Keyes

David Keyes Founder • June 5, 2024

In the report.qmd file.

Marina Gimenez

Marina Gimenez • May 7, 2025

What if I would like to have more than one parameter reported? Do you have a link where I could have a look at such example? Thank you

David Keyes

David Keyes Founder • May 8, 2025

Yup, check this video out! You can see the Quarto document here and the R script file here. Hope that helps!

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127 Lessons