Determining how many bars back on a tick chart is x number of minutes ago

[mikejhelms]

Hi. I vaguely recall but can not locate a posting that included a few lines of code for determining how many bars back on a tick chart is x number of minutes ago. That is, to get a good visual/temporal relative bearing on two tick charts of different intervals it would be nice to have a few lines of code to repeatedly draw a line x number of minutes ago on each of the two charts. Can anyone recall that post or recommend an approach? Thanks.

Mike

[ACM]

Re: Determining how many bars back on a tick chart is x number of minutes ago

Mike
The enclosed script should do what you are trying to accomplish
Alex

function preMain(){
    setPriceStudy(true)
}
var barIndex = 0;
function main(){
    var i = 0;
    var minutes = 10;//set to draw a line 10 minutes back from last bar
    if(isLastBarOnChart()){
        if(getBarState()==BARSTATE_NEWBAR){
            while(true){
                if(rawtime(-i)>=(rawtime(0)-(60*minutes))){
                    barIndex = i;
                    i++;
                }else{
                    break;
                }
            }
        }
    }
    drawLineRelative(-barIndex,0,-barIndex,Infinity*1,PS_SOLID,2,Color.red,"line");
} 

Originally posted by mikejhelms
Hi. I vaguely recall but can not locate a posting that included a few lines of code for determining how many bars back on a tick chart is x number of minutes ago. That is, to get a good visual/temporal relative bearing on two tick charts of different intervals it would be nice to have a few lines of code to repeatedly draw a line x number of minutes ago on each of the two charts. Can anyone recall that post or recommend an approach? Thanks.

Mike

[Doji3333]

Try this...

var nBarCounter = 0;


function main() {

   if (getBarState() == BARSTATE_NEWBAR) {
     nBarCounter++;
   }

 
   debugPrintln( fLookupBarsInMinutes(120) );
  return;
}


function fLookupBarsInMinutes(look4minutes) {
  //  enter look4minutes in total seconds - 60, 120, ?
  var x = 0, totalmin = 0;

  vTime = getValue("Time", x);
  vHour = vTime.getHours();
  vMin = vTime.getMinutes();
  vSec = vTime.getSeconds();
  var CurrentBarTotalSeconds = (vHour * 3600) + (vMin * 60) + vSec;

  while ((totalmin < look4minutes) || (x+nBarCounter > 5)) {
     x--;
  vTime = getValue("Time", x);
  vHour = vTime.getHours();
  vMin = vTime.getMinutes();
  vSec = vTime.getSeconds();
  var xBarTotalSeconds = (vHour * 3600) + (vMin * 60) + vSec;

     totalmin = Math.abs(CurrentBarTotalSeconds - xBarTotalSeconds);


   }
  
   return x;  //  x represents the previous bar/bartime >= look4minutes.  representing a negative number.
} 

[Doji3333]

oops. The "while" loop may need to be changed to "&&" instead of "||". Don't want any infinite loops.

[mikejhelms]

Thanks

Thanks guys. I like it when I get two or more responses to a post suggesting different approaches. I then usually mix, match or cannibalize the suggestions to come up with a final version. Thanks again.

Mike