Indicator prev calculated variable issue

[Stanislav Ivanov]

hi,

I am experiencing problems with the prev calculated variable in indicators for mt4. In the first calculation its returning 10000(for example), in the next one - 0 (so far its normal).But after that it starts looping - one time 0, one time the same 10000, and this is causing the indicator to malfunction.

This is the code, nothing extraordinary :

   int limit=(prev_calculated==0)?(rates_total-3):(rates_total-prev_calculated);
      for(int i=limit;i>=0;i--)

Thank you

[Alain Verleyen]

Stanislav Ivanov:

hi,

I am experiencing problems with the prev calculated variable in indicators for mt4. In the first calculation its returning 10000(for example), in the next one - 0 (so far its normal).But after that it starts looping - one time 0, one time the same 10000, and this is causing the indicator to malfunction.

This is the code, nothing extraordinary :

Thank you

Provide a complete test case to reproduce the issue if you want help.

[Stanislav Ivanov]

I am using a renko offline chart to calculate some values, and using the code you saw to make a look to process data and go through the renko bars. The issue is that every other OnCalculate event the prev_counted returns 0, although it is not 0. 

[Alain Verleyen]

Stanislav Ivanov:
I am using a renko offline chart to calculate some values, and using the code you saw to make a look to process data and go through the renko bars. The issue is that every other OnCalculate event the prev_counted returns 0, although it is not 0. 

You should provide all information from the start.

That's most probably due to the Renko generator.

[paul selvan]

another formula to set this limit is :

int limit = MathMax(rates_total - prev_calculated, 2);
for (int i=0; i<limit; i++){
   //....
}

[Lakshan Perera]

what do you return in the OnCalculate() function?

[Quan Thanh Nguyen]

Alain Verleyen:

You should provide all information from the start.

That's most probably due to the Renko generator.

i have the same issue, then i replace prev_calculated with other variable, it work well, but i would like to know why prev_calculated always reset to 0.

Offline chart is working fine, all update on time.

[William Roeder]

See How to do your lookbacks correctly #9 … #14 & #19.