// VWAP equation         VWAP =  sum of(volume x price)/ cumulative Volume

// Basic operation - The VWAP for each bar is calculated. Some values are accumulated for on going calculations.
//                 - If the chosen time period setting (close of 1st bar in required period )is met, lines are drawn .
//                 - variables holding cumulation values are reset ready for start of new period.

//-----------------------Calculate VWAP------------------------------

price=(high+low+close)/3           // calulation the average price/bar better h,l,c

VP=volume*price                    // VP is the volume multiplied by the price current bar

cumVP=cumVP+VP                     // variable to hold cumulative VP's.   VP for current bar

cumVolume=cumVolume+volume         // variable to hold cumulative volume's. volume is volume per bar.

VWAP=cumVP/cumVolume               // calculate VWAP


//---------------------At specified time draw lines-------------------------------


if currenthour =0   and currentminute = 30 and currentsecond = 0 then  // hrs 0-23, mins 0-59, secs 0-59

DRAWHLINE(VWAP) coloured(0,150,150,100)               // Draw horizontal lines @VWAP value at chosen time
DRAWVLINE(barindex) coloured(0,150,150,50)            // Draw vertical lines at beginning of period
                                                      // coloured (R,G,B,opacity)

cumPrice=0                                        // reset variable for new day/period
cumVolume=0                                       // "
cumVP=0                                           // "
endif
 
return VWAP as "VWAP Lines"

Hi ashehzi

Only been using PRT for about a month, saw your post and thought I would take a break for my own PRT problems and have a crack at yours. Create a new indicator and copy code.

If I understood your problem, you just wanted some lines drawn from the period end at the vwap value.

The code I knocked up is just a starting point for something much better alsoI haven’t fully checked its operation fully. I notice’s a couple of issues which I haven’t had time to look into.

1.  my vwap line doesn’t follow  the stock vwap(daily) points, don’t know why.
2. Lines probably don’t need to be drawn backward.
3. The more data in chart the more lines drawn and that, in this version is going to clutter the chart.
4. Only works properly in 30min timeframe unless time value changed to close of 1st bar of period.
5. Don’t think reset variable are quite in the right place I think there slightly out of sequence.

Anyway, hope this is helpful in some way and move you forward.  Will think about it. All the best.

vwap-lines.png