Rayline value calculation

[gain247]

Hi,

I use a strategy code to automatically draw ray lines based on certain reversal bars.
Here is a function I use to draw that ray line:

...
DrawRay("HighEndLine", false, hX2, H2, hX1, H1, Color.Blue, DashStyle.Dash, 2);
...

How could I calculate the exact ray line value at any later bar location, as illustrated below?

Thanks!

[marcow]

where are the 2 anchor points H1 and H2 exactly located in the image ?

I'm thinking something like :

1) calculate slope of RayLine
(H2 - H1) / ( hX1 - hX2 )

2) calculate distance between anchorbarsago1 and currentbar:
CurrentBar - hX2

combining 1 and 2 : multiply slope of Rayline by distance and add to Anchor 1 Y-value
(H2 - H1) / ( hX1 - hX2 ) * (CurrentBar - hX2) + H2

this will be the Y-value of the RayLine at CurrentBar.
does that work ?


Marco

[gain247]

Hi Marco

Thanks for a suggestion. Yes, mathematically it seems to work, but I was just wondering if there were any straight forward function to calculate the ray line value at later bars (than 2 anchor point bars).

Attached an updated chart pic with marked anchor points/bars.

[NinjaTrader_Matthew]

gain,

Unfortunately we do not have a support NinjaScript function to obtain this information.

As marco suggested, you would need to calculate the slope, and then the distance between that specific bar and where the ray started to determine the exact Y value of the line at that bar.

[gain247]

Ok, thanks Matthew

It's no problem to use math to calculate the value, but it sure would be nice to have a chart line values by bar supported natively by Ninjascript, like indicator plot values are. Maybe into a wishlist... ;-)

Thanks!