Yep, the RStudio integration is very nice. However, there are other ways of authoring R Notebooks that also allow interactivity, and the only thing that’s missing then is having output inline inside the editable document. Apart from that, if you for example use Nvim-R or ESS, you can write R Markdown, execute chunks selectively, and get a visual, interactive representation of the results in real time that way. And once the document is done, a single press of a button will render the resulting Markdown/HTML/PDF document.