Candlepattern Class, CPriceSeries::GetData: invalid buffer error.

[Rodolfo Andrade]

Hello, I tried to make this simple script test below, but I getting this error: CPriceSeries::GetData: invalid buffer.

Please anybody can help me to understand?

Here you can find Candlepattern class: https://www.mql5.com/en/code/291 

 

#include <Indicators\CandlePatterns.mqh>
 
void OnStart() {
   CCandlePattern candle;
   
   if(candle.CheckPatternAllBearish()) Alert("Bearish pattern detected!"); else
    if(candle.CheckPatternAllBullish()) Alert("Bullish pattern detected!"); else Alert("Nothing!");
}

[Alain Verleyen]

This is class was written for first version of MQL5 Wizard and is now obsolete (for the wizard). There is a new version, you can find it in the last post of this topic All about MQL5 Wizard : create robots without programming.

[Owen Fausd]

Hello,

I also tried to use this class, first with the old version (Revision 2011.02.23) then with the new version you posted in the link (Revision 2011.03.18).

With both versions I get the Error:

"CPriceSeries::GetData: invalid buffer"

I also get this Error, when I create objects for Open, High, Low, Close, Spread, Time, TickVolume, RealVolume and pass the to the methods

SetPriceSeries(...)

and

SetOtherSeries(...)

I also had the idea of calling

InitIndicators(...)

with a new Object of "Indicators".

When I do this, the method blocks endless.

I followed the Error by debugging and found out, the Function

CSeries::CheckServerHistory(...)

runs in an endless-while-loop, where it checks "SeriesInfoInteger(..., SERIES_SERVER_FIRSTDATE, ...)"

Is this the proper use of this class?

If yes, how can I fix this endless-loop-problem?

Thanx a lot!

[Owen Fausd]

Alain Verleyen:

This is class was written for first version of MQL5 Wizard and is now obsolete (for the wizard). There is a new version, you can find it in the last post of this topic All about MQL5 Wizard : create robots without programming.

I tested the newest version I found with Revision 2011.11.10.

I still get this error "CPriceSeries::GetData: invalid buffer" if I just create an object.

I can only guess, that I have to call "InitIndicators(...)". If I do, it blocks endless in "CSeries::CheckServerHistory(...)".

Looks like the call of "m_MA.BufferResize(50);" in function "bool CCandlePattern::InitMA(CIndicators *indicators)" in line 163 is responsible for this.

If I cut this out the initialisation works well and I get candlepattern-results.

But are they correct now? Is this Buffer-resizing nessecary? Why does that Check-Function run endless?

I also may not call two functions, which seem to be needed by the other Signal-Classes, I get those errors:

CExpertBase::SetPriceSeries: changing of timeseries is forbidden
CExpertBase::SetOtherSeries: changing of timeseries is forbidden

[Aira MJ]

Is there any way to use that class by guiding the candles' data directly to an EA without generating another .mqh?