Reverse the sign of PCA
8333
Does the sign of scores or of loadings in PCA or FA have a meaning? May I reverse the sign?
154304
Do PCA affect different classification methods?
7779
How does centering the data get rid of the intercept in regression and PCA?
56741
What does the sign $\propto$ mean?
22097
How do I disable negative scaling?
148871
Sign of the vector (especially $g$) while calculating
109090
Inverting non positive definite covariance matrix
7603
Relationship between SVD and PCA. How to use SVD to perform PCA?
46319
How to perform orthogonal regression (total least squares) via PCA?
45858
How to compute varimax-rotated principal components in R?
135047
Why does PCA maximize total variance of the projection?
112934
Is PCA followed by a rotation (such as varimax) still PCA?
145396
Symmetric Matrix , Eigenvectors are not orthogonal to the same eigenvalue.
85031
How to interpret this PCA biplot to determine which attributes to pick?
17017
Row swap changing sign of determinant
36609
Creating a single index from several principal components or factors retained from PCA/FA
155433
Examples of PCA where PCs with low variance are "useful"