Re Silver $ 21 tks very much.
Renko charts will be quite similar to computer generated P&F charts, based off the High and Low, as P&F should be made from intraday, ie every trade, but of course no-one keeps that data anymore. So computer generated P&F charts really only deal with extremes, like Renko’s do.
If one had all the Silver intra day data going back to the 1980’s Hi, the base across from that $ 50 Hi to the last $ 50 Hi would be immense, hundreds of boxes, so that would count into the hundreds for Silver.