Hello everyone.   I am new to ENVI and so I am trying to find my way around and so far so good. However, I have a question regarding the output of the Basic Tools/Computing statistics module. I have asked the program to calculate the Covariance and so in the output it shows the covariance and the correlation matrix, the eigenvalues and the eigenvectors. So far I haven't been able to find out how were the correlation coeficients calculated. Meaning what statistic was used. I addition I am confused by the layout of the Eigenvector matrix, in which both rowas and columns represent tha bands. Can any one shed some light on this? Shouldn't be the columns representing the factors (vectors?). Finally, I want to ask how can I get hold of the ENVI User's Guide, the web interface keeps crashing on me when I try to open the pdf, and I haven't been able to find it anywhere else.   Thank you very much