"Thanks Ken!"

You're welcome.

"Any other recomendations?"

Unfortunately not. The last time I used anything similar was over a decade ago; so, no up-to-date knowledge in this area at all.

"I have used GD::Graph earlier but it does not have a very good UI aesthetics..."

Yes, I seem to recall that's what I used all those years ago. I also seem to remember struggling with the UI too; although, that's very old news now.