using the pca function i face the following problem: i have a data set X of 1000 observations (rows) and a little less variables (columns). The data consists of linear combinations of only two vectors.
if i compute pca(X) i find the coordinates of the second pc in coeff(:,1). The first one is missing.
if i compute pca(X') if find the coordinates of both in coeff(:,1) and coeff(:,2), where coeff(:,2) is equal to coeff(:,1) of pca(X).
best regards and thanks in advance Raphael