Graphics field E as a function of distance in HFSS

Hello, I have started a project in HFSS where I have plotted the behavior of the field E as a function of distance in a 2D patch antenna.
I read something to normalize the distance but have no idea how to make this chart, thank you for your help

You can create a polyline in HFSS, and then generate a E-field plot along this polyline.

thanks for answering Streamlet, but that is a polyline? I am a novice in this area, I would appreciate a thorough explanation of the process, thanks