DrawRay() and the *next* bar

[cassb]

Let's say I use DrawRay() to draw a ray from Open[2] to Open[1]. Is there a way to tell when the CurrentBar closes if Open[0] is above or below the extended ray? I guess I would need to know the price where the ray would intersect each future bar.

Thanks!
Bryan

[NinjaTrader_Ben]

Yes, this is possible with some advanced programming. For an example, look at the code in the Automatic Trend Line indicator at this link:

http://www.ninjatrader-support.com/vb/local_links.php?catid=1

[cassb]

Yes, this is possible with some advanced programming. For an example, look at the code in the Automatic Trend Line indicator at this link:
http://www.ninjatrader-support.com/v...ks.php?catid=1

Well that's funny, because that's the code that I was modifying! :-)

Ok, so where in that code is it determining what the value of the extended ray is -- when it's finding out whether the trendline has been crossed?

[NinjaTrader_Ray]

In the code there are comments, something like "Check for trend line break" etc...This is from memory. You will have to rip through the code to understand what is happening. In a nutshell, it grabs the xy values of the start and end point of the trend line and calculates the slope (change per bar) and then add this to each subsequent bar to determine the line value which then can be checked against the close price etc...

[cassb]

In the code there are comments, something like "Check for trend line break" etc...This is from memory. You will have to rip through the code to understand what is happening. In a nutshell, it grabs the xy values of the start and end point of the trend line and calculates the slope (change per bar) and then add this to each subsequent bar to determine the line value which then can be checked against the close price etc...

Yes, thank you, that's what I thought too. Now where are those old geometry books... ;-)

Bryan