Autodesk Robot Structural Analysis

[#1]

To vertify my structure i have used matlab and plottet the eigenvectors. I am trying to compare the results from robot with the results from matlab. is there a smart way to get the eigenvectors ou from robott.. all i seem to get are -0 +0 and  1 -1 ?  

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See below

[#2]

I was also wondering if Robot take into acount crackling of the concrete by code reduction factors for shear and flexular deformation when preforming a modal analysis? 

No , reduce E or section properties by your own

Example: