Yaw for Target

[Joe Kerbal]

I've a question about kOs. I'm not sure this is the proper section but I've seen other questions regard scripting so I guess it would fit... if not I'll be glad to correct.

I need the yaw for my ship target.

I know I can excellently use 

set steering to target:position

but I need to extrapolate yaw from the vector going from my ship to the target.

I did some vector manipulation taking ship and target position, subtracting the vector and extrapolating yaw from the result.

technically works but the numer is meaningless as, I assume, ship:body:position and target:position are referring to different coordinates system. 

In fact target is only 1 Km far and I found out polar coordinates with weird giant numbers... so clearly I'm not referring to the same 

I finally realize target:position is somehow a relative position of the target from the ship (I guess). But extracting the yaw from it doesn't sound very effective. 

 

anyone knows how to extract the direction (or the vector) between target and ship?

 

[Laie]

I'm not very familiar with kOS, but perhaps target:body:position will give the position in the same reference frame as ship:body:position?

[Joe Kerbal]

I just realize that :body suffix refers to the planet we are on. ship:body:position and target:body:position returns the same value and it changes in time even if target and ship are stopped... i guess that's mun coordinates.

that's useful to know but still I don't have a solution...

[Joe Kerbal]

Just in case someone would be in the same need the answer is

target:geoposition:heading

it gives you the (local body) heading (north based) from the ship to the target.

 

 

[Spricigo]

Nice you figured it out.

Mind you that for thing that Mod specific usually the mod thread or https://forum.kerbalspaceprogram.com/index.php?/forum/20-add-on-discussions/  is a better place to look first.