Another way of writing that is:

lerp(track1, track2, 0.4)

..where the last number could be driven by a slider or something:

set cut_paste_input [stack 0]
version 6.3 v5
push $cut_paste_input
Tracker3 {
 track1 {983 437}
 offset1 {0 0}
 pattern1 {-34 -34 34 34}
 search1 {-23 -23 23 23}
 enable2 true
 use_for2 {T}
 track2 {1310 589}
 offset2 {0 0}
 pattern2 {-34 -34 34 34}
 search2 {-23 -23 23 23}
 enable3 true
 use_for3 {T}
 track3 {{"lerp(track1, track2, t3_interpolate)"} {"lerp(track1, track2,
t3_interpolate)"}}
 offset3 {0 0}
 pattern3 {-34 -34 34 34}
 search3 {-23 -23 23 23}
 track4 {983 655}
 offset4 {0 0}
 pattern4 {-34 -34 34 34}
 search4 {-23 -23 23 23}
 center {1092 546}
 name Tracker1
 addUserKnob {20 User}
 addUserKnob {7 t3_interpolate}
 t3_interpolate 0.345
}


On 31/01/12 13:04, Randy Little wrote:
> make a new 3rd  tracker go to track 1 and paste them something like this
>    ((tracker1*.60)+(tracker2*.40))/2   You can then make user knobs if
> you so desire to control the percentage.  This will make the track1 of
> the 3rd tracker the Math you described.   
> 
> 
> Randy S. Little
> http://reel.rslittle.com
> http://imdb.com/name/nm2325729/
> <http://www.linkedin.com/in/rslittle>
> 
> 
> 
> On Mon, Jan 30, 2012 at 18:29, dbwstudios
> <[email protected]
> <mailto:[email protected]>> wrote:
> 
>     __
>     Hey guys I have been looking for a way to take two different 2D
>     Trackers (one point each) and blending them. I'm not talking about a
>     hard cut between two frames. That's easy. I'm looking for away to
>     have Both trackers influence an element by percent. Another words,
>     one tracker is set to 40% influence, and the other Tracker set to
>     60% influence.
> 
>     Here is a senario that might help explain why such a thing would be
>     necessary. If I have two plates that I need to stitch together. The
>     problem is they both have different camera moves close but not
>     matching. The Aplate has a stabilize applied same with the Bplate. I
>     want to blend the plates together over 10 frames. Once that is done
>     I want to add the camera motion back onto the now new plate compiled
>     with the two plates A&B. I want Aplates move to start at the blend
>     and dissolve into the Bplates move over the 10 frames.
> 
>     If anyone out there has any ideas on how to do this it would be
>     greatly appreciated. I know there was a shake macro floating around
>     that did this very thing. not sure if it would help with nuke or not.
> 
>     Thanks
> 
>     _______________________________________________
>     Nuke-users mailing list
>     [email protected]
>     <mailto:[email protected]>,
>     http://forums.thefoundry.co.uk/
>     http://support.thefoundry.co.uk/cgi-bin/mailman/listinfo/nuke-users
> 
> 
> 
> 
> _______________________________________________
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-- 
ben dickson
2D TD | [email protected]
rising sun pictures | www.rsp.com.au
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