Export N-volume bar data to text

[TX_trader]

Hi,

I have used the following code to export intraday minute data to a txt file. I use Scan to do so. How do I do the same for N-volume bar data as the periodicity settings don't allow for n-volume bars?

oc=ln(C/o);
dco=ln(O/Ref(C,-1));
ol=ln(L/O);
oh=ln(H/O);

tim=Hour()*100+Minute();

dat=datenum();

C_new=ln(C);
o_new=ln(o);
l_new=ln(l);
h_new=ln(h);

const=934;
for( i=1; i<BarCount; i++ )
{ if ( dat[i] != dat[i-1] )
	{	o_new[i]=C_new[i-1];
	}
  else 
	{	O_new[i]=C_new[i-1]+dco[i];	
	}
	
	C_new[i]=O_new[i]+oc[i];
	h_new[i]=O_new[i]+oh[i];
	L_new[i]=o_new[i]+ol[i];
}
C=round(exp(c_new)*100)/100;
O=round(exp(O_new)*100)/100;
L=round(exp(L_new)*100)/100;
H=round(exp(H_new)*100)/100;


//Plot(tim,"c", colorGreen, styleLine); 
/*
Plot(exp(o_new),"o", colorgreen, styleLine); 
Plot(exp(l_new),"l", colorred, styleLine); 
Plot(exp(h_new),"h", colorblue, styleLine);  
*/

fh = fopen( "C:\\Users\\name\\OneDrive\\Documents\\TS\\data\\"+Name()+"_5vol.txt", "w"); 
if( fh ) 
{ 
   y = Year(); 
   m = Month(); 
   d = Day(); 
   r = Hour();
   e = Minute();

   
   for( i = 0; i < BarCount; i++ ) 
   { 
      //fputs(  "," , fh );
      ds = StrFormat("%02.0f%02.0f%02.0f,", 
                     y[ i ], m[ i ], d[ i ] ); 
      fputs( ds, fh ); 
     
      ts = StrFormat("%02.0f%02.0f,", 
                     r[ i ],e[ i ] ); 
      fputs( ts, fh ); 

      qs = StrFormat("%.4f,%.4f,%.4f,%.4f,%.0f\n", 
                     O[ i ],H[ i ],L[ i ],C[ i ],V[ i ] ); 
      fputs( qs, fh ); 
   } 

   fclose( fh ); 
} 

Buy = 0;

Thanks

[Tomasz]

N volume bars are available if only you define them in the Tools->Preferences, Intraday page

[TX_trader]

Okay, assuming that it done, how could I create the output given that Scan seems to only use periodic data bars in the Analysis Settings?

[TX_trader]

Is this even possible to do if base bars are 1 minute?

[Tomasz]

As I wrote: you can use nvolume bars if and only if you define them in the Preferences

[TX_trader]

I have them defined here as I mentioned before. Obviously I'm missing something else because I don't see them in the Analysis settings as an option.

It was my understanding that I need to use Exploration or Scan and these both require a "periodicity" selection which doesn't have N-volume bars as a selection.

[Tomasz]

Is your database Using Tick as base time interval?

[TX_trader]

No, I use 1 minute as my base.

[Tomasz]

Tick is required for n volume bars

[TX_trader]

If I can see volume bars on the chart, is there no way to export that data without having tick data?