on-demand selection: only selecting a subset of data from a local resource when needed.

[eveilyeverafter]

Let's say you have a large and local parquet file and you would like webr to query it on-demand. Even in parquet format the file is relatively large and so you want to avoid loading the entire parquet every time the page refreshes or upon first visit to the quarto book/site. Is there a way to perform a lazy way of downloading a resource?

BTW this is a wonderful tool. Thank you for developing it.