Creating your own composite average - any website suggestions?

[panvulcon]

Evening, does anybody know of a website or software that allows you to create a candlestick chart based on a custom composite avg?

I understand how to combine candlestick data to create an index but i'm looking for something that will take the leg work out of manually plotting graphs. Stockcharts indices builder is the nearest thing I've found for this but it requires you to manually update the data.

Any thoughts?

Cheers,

Andy