Reducing CPU Load

[Alan2004]

There was a prior thread addessing the removal of arrows applied to a chart to reduce the cpu load. I have searched and can not find it. Can someone point it out to me?

Best Regards,

Alan

[Doji3333]

the easiest way to handle this is to create a recycling graphics ID for each bar. This way you can clear older shapes/text/lines by re-assigning a new shape/text/line with the same TAG ID.

First, you need a function to recycle the values (lets say 1 to 100).

Then you need to track when new bars form on the chart so you can increment the counter.

Then you need to use that counter in your "drawShape" function in the TAG or ID field.

When the numbers recycle, it will clear the older shapes and replace it with the new ones... simple and easy on CPU loads.

var vGraphicID = 0;
var nLastRawTime = null;
var BarCounter = 0;  //  Counts the number of bars in the chart

function main() {

//  This is the function I use to finding new bars on the chart
   //  If new bar
   if ((getValue("rawtime", 0) != nLastRawTime) ) {
     nLastRawTime = getValue("rawtime", 0);
     BarCounter += 1;

     //  Increment Graphics Counter.
     fIncrementGraphicID()
  }

       drawShapeRelative(0, high(0)+MakeGOffset(),  Shape.DOWNARROW, "", Color.red, Shape.TOP | Shape.ONTOP , vGraphicID+"SE");


  return;
}


function fIncrementGraphicID() {
  vGraphicID += 1;
  if (vGraphicID > 100) { vGraphicID = 1;  }
}

function MakeGOffset() {
  return (high(-1)-low(-1))/3);
} 

[Alan2004]

Thank you for the reply. I will test this over the weekend.

Best Regards,

Alan