How to show info regarding in-chunk slow processes

[bakaburg1]

Description

Hello,

Some chunks have long-running operations where the quarto progress bar for the overall document just stops until the chunk code is fully executed.
Is there a way to show some info produced by the chunk code so that one can understand if it's progressing?
For example some logging messages or even better a progress bar.

My language of reference is R.

[mcanouil]

R code is ran via knitr. That's the engine and it's it that displays the progression.

See https://yihui.org/en/2023/01/knitr-progress-bar/ and the knitr.progress.fun option (https://yihui.org/knitr/options/#global-r-options.

[mcanouil]

Quarto does not control that.
This is up to you to add messages etc. in the code cells and/or customise the progress function to display more information.

Quarto or knitr do not mangle with your code.

[bakaburg1]

yeah, but messages and other logging outputs are not displayed when I process the document!

[mcanouil]

Do you have a concrete example?

[mcanouil]

Still, that's a knitr option to set.
If you don't want the messages to be printed in the rendered document, but in the console, the knitr documentation says:

knitr::opts_chunk$set(message = NA)

The same goes for warnings.

(Note that I am using a custom progress bar.)

[bakaburg1]

that's it!! I was missing the message = NA option!