Retain all vectors and full variance:
PCA SUMMARY

Center:

    sepal length       sepal width      petal length       petal width  
          5.8433            3.0540            3.7587            1.1987  

Deviation:

    sepal length       sepal width      petal length       petal width  
          0.8253            0.4321            1.7585            0.7606  

Importance of components:

  eigenvalues     proportion     cumulative
       2.9108         0.7277         0.7277
       0.9212         0.2303         0.9580
       0.1474         0.0368         0.9948
       0.0206         0.0052         1.0000

As above, only with generalized vectors:
PCA SUMMARY

Center:

    sepal length       sepal width      petal length       petal width  
          5.8433            3.0540            3.7587            1.1987  

Deviation:

    sepal length       sepal width      petal length       petal width  
          0.8253            0.4321            1.7585            0.7606  

Importance of components:

  eigenvalues     proportion     cumulative
       1.2931         0.3233         0.3233
       0.9654         0.2413         0.5646
       0.8708         0.2177         0.7823
       0.8708         0.2177         1.0000

