[pcabc]

I wish I had your coding skills pcabc so I could do something similar but I don't have any knowledge of PHP and would need something easier to learn. It may take up a lot of your time but the ability to create exactly what you want must be very rewarding. I'd rather have the half a dozen or so indicators that I really need than snazzy graphics or a slick UI.

Thanks, appreciated.  I'd suggest you look around for charting packages and data sources.  By packages I of course include charting sites. I'd suggest that you don't discount the US as over the last 5 years it has been very strong compared to the UK.  But you need to be very wary of foreign exchange costs and order types (at least for your trading account) as they have bit me hard.  I'd suggest looking at the thread https://www.stageanalysis.net/forum/Thre...-Indicator, This gives examples of how to calculate the Mansfield relative strength.

Finding a charting package with breadth will be the challenge. US data is obtainable in some, but I'm not an expert there. Non US data will be a challenge I suspect.