Apply pca for 2 features

I have (sound)of motor and calculated its vrms and peak to peak to paek how can i generated the pca from this faetures (vrms , peaktopeak ) to detiction of healthy an fualty motors ?

[Image Analyst]

I'll show you if you attach a .mat file with your vrms vector and your peaktopeak vector. Basically you call pca(), like the example for 3 feature vectors I'm attaching where I did PCA on the values of the three color channels in an RGB image.

[Faris Zyoud]

this my code