Keeping unselected lines as a background

[sesise0307]

Hello,

First of all, thank you for sharing the nice visualization library.
I really enjoy using it and I have a suggestion to improve its usability.
How about keeping unselected lines as a background when I select certain area of a variable?
In the current version, if I select certain area of a variable, Hiplot shows only selected lines.
It would be more useful if I could compare the selected ones against unselected ones.

For example, plot.ly's way as follows.

[danthe3rd]

Hi,

Thank you for your suggestion and illustration, I'll try to integrate that in a future version of the tool :)

EDIT: Will require some refactoring of the code to make it clean - so still in my roadmap, but not in the immediate future.