sum of all highs from yesterday in MT4 language?

Hello


Basically I want to have the following operation translated into MQL4:


double sumofhighs = the sum of all M15 highs of the previous trading day (i.e. the M15 high of 00:00 + the M15 high of 00:15 + the M15 high of 00:30 + etc.)


I assume it is done with ArrayCopyRates or something similar but I'd like to know how exactly. Thanx in advance.

To work with time series (arrays) in MT4, you need to determine the start and ending indices. You do this with iBarShift(); the latest is always 0. Once you have the indices you can do a for loop to figure out what you want.

If you wanted the highest price you could use iHighest() with the indices, but if you want the sum you need to use the for loop.

thx for the reply.

I dont want to know the double value of the highest price but the sum of all highs of yesterday's M15 candles. What does the code have to look like?

I don't do code for free because it takes time to get working correctly which is your responsibility.

Try this; don't know what you want to do with it?
As CM says, not worth messing with for free as people always come back and want more!

It is a start and up to you to modify to your needs.

HTH

Fantastic! Thanks a lot. This is what I was looking for. A roadmap to tailor things to my needs. A learning by doing thing. Something you won't find in any poorly translated Russian tutorial, FAQ or thread.
Thx again, mate! You're the best.