Using SolidWorks Premium 2015 x64, service pack 5.

I am trying to use the Buckling study to analyze a simple cylinder model, and am not understanding the results.

What is the Mode Shape/Amplitude Plot showing? Looking at the List Buckling Factor of Safety (see image) option, it gives me a FOS that is matching with classical hand calculations, but I do not know what the plotted result is.

Also, according to the documentation for Output of Linearized Buckling Analysis​ and Performing Buckling Analysis​, it appears that the output should be displacement and/or deformation. I could not find any mention of a mode shape plot in the documentation. Finally, I do not have these two (displacement/deformation) plots available as potential charts; the only chart option that I have is the Mode shape/Amplitude plot.

My two questions are what is the Mode Shape/Amplitude Plot, and why don't I have the option to create a displacement/deformation plot?

Any insight someone may have is greatly appreciated.