Conversion Straight (represented by a stroke) to centerline (represented as a mixed stroke)

Hello

With GSD, I built a straight line in space. I'd like to convert this line to a centerline.
It seems to me that it was possible by ticking a "construction element" box.
Pb: I can't find this box anymore.
I wonder if this manipulation is not only possible in sketches.
Thank you in advance for reviving my memories.

Hello, the transformation into a " building element " only exists in the sketch.

A line created in GSD can be modified (right click on the right) and applied a discontinuous line representation N°4 or also change its color.

 

However, under GSD there is the "axis" command under the same toolbar as "right".

You must first have created the geometry that will allow CATIA to create the axis (a circle for example).