i have find the answer to this question. sorry for my overlook the information about it in internet.
> 2,as some textbook say,when using fisher's method,"we proceed by assuming > that the within-group covariance structure for our data is the same across > groups",so we need test for equailty of covariance matrices. my question is > :when i using lda,should i test equailty of covariance matrices first? and > can R do these? the box's m test is the way for this purpose,but the test does not have good property.so it is not worthwhile for us the do the test. ______________________________________________ [email protected] mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
