comparing present Tick with previous Tick

[TURLIES]

Hi,
I want to do a simple study which compares the present Tick with the previous Tick - eg:

if close (0) > close(-1)...then display a green vertical line on the 1min (or any other time frame) advanced chart
or
if close (0) < close(-1)...then display a red vertical line on the 1min (or any other time frame) advanced chart

..as above, but comparing Ticks instead. Any idea if this is possible?

Thanks,
Paul

[SteveH]

You want to save close(0) into a variable (e.g., prevClose), compare it to the current close(0), do your line coloring and then set the the current close(0) value to prevClose.

var bInit = false; 
var prevClose;
main()
{
  if (bInit == false)
  {
    prevClose = close(0);
    bInit = true;
  } 
  if (close(0) > prevClose)
  {
    // display green vertical line
  }
  else if (close(0) < prevClose)
  {
    // display red vertical line
  }
  prevClose = close(0);
} 

[Now, I'm assuming that you don't call setComputeOnClose() in your preMain().]

[TURLIES]

Spot on.

Thanks Steve