v4 - updated the auto increment calculation
- checked for symbol without volume and will produce an error message
- improved comments
- another note on volume, Volume Profiles and POCs essentially examine the volume across price levels or increments, if a single candle crosses multiple price levels, this script allocates the volume of that candle equally between the volume levels and not purely at the ending close or high price level of the candle, this is purely a choice on my part that suggests large body single candles have trading volume through the entire price action of that candle and not at one price point. A more precise method (perhaps for a later update) would be to parse that one large candle into lower time frames and allocate the volume appropriately - perhaps for a future version. For now the approximation of equal volume distribution is good enough.