Thanks for opening this. The output is implemented in SVG format, so it should be also possible to add an option to export it to a standalone file (HTML, SVG). Once HTML/SVG is exported one could use browser's ability to convert anything into PDF if needed. Speaking of which, one could also export entire notebook/file to PDF using nbconvert's webpdf (see https://nbconvert.readthedocs.io/en/latest/install.html).

How do you imagine the export function should be exposed?

I'm pretty new to the area. I just noticed that Instead I get the following:

What version of JupyterLab are you using? Or are you using Jupyter Notebook? Did you try reloading/restarting it after installation?

JupyterLab v3.6.3. This works fine inside lab. The HTML, PDF, etc, look like the screenshot.

Sorry, I did not get that this is a screenshot of exported notebook. Does it also happen with webpdf export specifically (as compared to standard pdf export)?

Sorry, I did not get that this is a screenshot of exported notebook. Does it also happen with webpdf export specifically (as compared to standard pdf export)?

Just gave it a try and it came back with the same object pointer kind of result. I ran:

jupyter nbconvert --to webpdf --allow-chromium-download Untitled.ipynb

Thanks for testing! I will take a look. Last suggestion: are your notebooks trusted? Could you try trusting them manually (Trust notebook from command palette, then save) before exporting?

Thanks for testing! I will take a look. Last suggestion: are your notebooks trusted? Could you try trusting them manually (Trust notebook from command palette, then save) before exporting?

It says "Notebook already signed"

Any update here, I just see a reference object when I try to show my dag.

I opened a draft PR #10 - in principle it works but in practice it either only renders 50% of the time, or there are problems with sizing (depending on whether the model gets updated with delay/in update method or in render method):

The problem is that the dagitty internal logic to resize only triggers after the node is attached. This will require some method to make dagitty resize to the image synchronously.

I am not sure how svg will render in standard PDFs but it certainly does well html and webpdf export.