Accessing Previous Occurrances of an IRay Object

[Taddypole]

In the Ninja Trading Help manual there is a definition of Iray.

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Examples

protected override void OnBarUpdate()
{

// Draws a ray
IRay ray = DrawRay("tag1", 10, 1000, 0, 1001, Color.LimeGreen);



// Print the number of bars ago the 2nd anchor point is located at

Print(ray.Anchor2BarsAgo);
}
///////////////////////////////////////////////////////////////////////////////////////

How do I access previous occurrences of the IRay object?

thanks,
taddypole...

[NinjaTrader_Lance]

Each time a new ray is drawn with the same variable name the previous will no longer be stored.

You can access previous occurrences a few different ways

1. with the tag name (see properties in next link)
2. with a loop (see example in next link)

http://www.ninjatrader.com/support/helpGuides/nt7/index.html?idrawobject.htm

This might be of use as well: http://www.ninjatrader.com/support/h...rawobjects.htm

If you're dealing with global objects this is a great example:

http://www.ninjatrader.com/support/forum/local_links.php?action=ratelink&linkid=472&catid=-1&lpage=1

There may be other ways but these are the first two that came to mind.

Let me know if I can further assist.

[Taddypole]

Thank you Lance,

I'm looking at the indicator "SwingRaysV1.cs (attached).

In the Code, a swing High is created as below:

IRay newRay = DrawRay( "highRay" + (CurrentBar-strength), false, strength, lastSwingHighValue, 0, lastSwingHighValue, swingHighColor, DashStyle.Dot, 2);

Later as a test to see if the swing is broken, they do a Peek() as below:

IRay priorRay = (IRay) swingHighRays.Peek();

It appears that the "Tags" are 'newRay' and 'priorRay' respectively and thus only good for the current Ray.

I would like to Peek() at previous occurrences to get the anchors of those Rays.

I looked at the references you provided and still couldn't see how to do this.

[NinjaTrader_Lance]

From looking at the Ray line you have here

"highRay" + (CurrentBar-strength)

Will be the tag name. You could store this in some manor and can then reference a previous ray through the use of the tag name

While the following would not be the most efficient way you could so something like

foreach (IDrawObject draw in DrawObjects)
{
if(draw.tag == StringTagYoureLookingFor)
yourOtherVariable = draw.Anchor1Y;
}

Alternatively you could create your own list of draw objects so that you could reference the specific one you were looking for

[Taddypole]

thanks Lance,

hoping there was an easier way, but I guess not.

taddypole...