What is the difference between CopyTickVolume() and CopyRealVolume()?

[Drazen Penic]

Help for these two functions is not very helpful:

CopyRealVolume():  The function gets into volume_array the history data of trade volumes for the selected symbol-period pair in the specified quantity.
CopyTickVolume(): The function gets into volume_array the history data of tick volumes for the selected symbol-period pair in the specified quantity.

 

What is "trade volume" and what is "tick volume"? 

[Ian Venner]

tick volume is the count of ticks in the Bar, real volume is (supposed to be) the amount of traded lots by all the brokers clients collectively, during that bar.

[qjol]

SDC:
  ... all the brokers...

your broker

[Alain Verleyen]

qjol:

your broker

I don't think there is a MT4 broker providing these data. Please report it if otherwise.

[Drazen Penic]

I tried with three brokers today, and none provides volume data.