Getting a buffer value from the previous bar

[Konval]

Hallo!

I have a C++ problem.
I want to develop my own EMA.
How can I get the previous EMA?

I have this:

TIndexBuffer ema;


And in the Calculate function:

double GetPrevEma;
GetPrevEma=ema.GetValue(index+1);

But this doesn't work.
How can I get the value of a buffer from the previous bar?

Many thanks.

Best Regards.

[FT Support]

I'm not C++ programmer, but i'd recommend to change "ema.GetValue(index+1)" with "ema[index+1]" maybe these constructions are same but i'm not sure.

can you post the whole code of your indicator? are you sere that buffer is populated correctly?

[Konval]

You are right!

ema[index+1]

This works well.

Thanks a lot.