The picassojs.studio website is a custom code playground/sandbox for creating visualizations using the picasso.js visualization framework - it's inspired by an internal tool, picasso-sandbox, that I created while we developed picasso.js.

It's real time and updates itself, designed to streamline how to create graphs. It has a Code tab and a Data tab. The result of the "Code" tab is passed to picasso.js as the "settings", and the result of the "data" tab is passed into picasso.js as the "data".

1. Clone the repo
2. Run yarn && yarn start
3. Have fun!

This SHOULD work - however I can't seem to get yarn to run right now, so I can't confirm it. Here's the steps:

1. Clone the picasso.js repo and follow installation instructions
2. Navigate to the picasso.js package using cd packages/picasso.js
3. Run npm run build:watch
4. Do npm link
5. In the picassojs-studio-repo, run npm link picasso.js

No. This is purely a free-time/hobby kind of thing, and is not endorsed nor supported by the picasso.js team.

Locally only, in your localStorage

Not yet. Or well, if you fiddle about with your localStorage, you can edit it using an editor, and then paste it back again and reload the page. But no, other then that there's no official way.