For peeps who do technical analysis on charts, what type of charts do you look at? Do you look at USD/BTC or Euro/BTC or what? And what about altcoins, which charts do you look at? BTC/Altcoin or USD/Altcoin?
There are many possible charts to look at so how do you know what currency chart to use?
you look at the charts for the market that you are trading at. if you are trading with USD then you look at USD/BTC and if altcoins with bitcoin then alt/btc. you can always take a look at the other charts but they behave all the same.
And also which exchange to base the charts on as different exchanges would have different price action, therefore the charts will be different.
they won't be that different.
for example charts for bitcoin from bitfinex, bitstamp, coinbase, gemeni are all the same for 90% of the times.
but for example charts for litecoin on poloniex and bittres are very different from charts from cryptopia for instance. (because the later has low volume and small market)