Hi and welcome to the forum!
When you use the Photoshop CS6 new function stroke on the path of a vector shape, how can you convert the result in a vector shape ?
When you use a Rectangle/Ellipse/etc creation tool in Shape mode (see Options bar) then you do create a vector object (it's actually a Fill layer with a vector mask). The stroke options for these tools only appear when the tool is in Shape mode, anyway.
Merging multiple vector shapes doesn't work. The strokes outlines are not vectorized in the new vector shape.
Multiple vector Shape layers do merge into one vector Shape layer as long as all layers being merged are Shape layers. A mixture of layer types will be merged into a pixel layer.
It's possible to convert in pixel and keep the stroke drawing, but no way to convert in vector.
Illustrator has a similar function in order to vectorize the stroke.
If you're referring to Illustrator's trace function then the closest thing in Photoshop is to convert a Selection to a Path. There are many methods for making a selection, such as Magic Wand, Quick Selection, Color Range, Cmd/Ctrl-clicking on a thumbnail, etc. Then you would use "Make Work Path..." command found in the Paths panel.
Dear Conroy, thanks but actually I think you don't understand my question.
I wish to convert the stroke of an vector object, into a new vector shape (including the outlines of the stroke).
Here is a visual example :
A vector shape with a stroke (new CS6 function). Fill color is transparent, stroke is pink.
The outline of the stroke is converted into a new vector shape
it's a shade, since Making path from a selection gives an approximated result. As you know, straight lines become curved. Final shape is very poor.
Sometimes I wonder myself why such evident function are not implemented into Photoshop. Of couse there are thousand others, but I think I'm not the only one users who may appreciate that.