How does CCA in PC-ORD differ from that available in other statistical packages?
A. CCA is not yet available in major statistical software packages (do not confuse it with canonical correlation, an older eigenanalysis technique based on a linear response model). CCA in PC-ORD does not have some of the options available in another implementation (such as inclusion of covariates and detrending), but we think you will be pleased with the spreadsheet data format, modern interface, integrated graphing, modest price, and our fully integrated set of data transformations and other multivariate tools. CCA in PC-ORD is easier to use than CANOCO but doesn’t have some of the options in CANOCO (e.g. inclusion of covariates). On the other hand, CCA in PC-ORD is integrated into a relatively comprehensive package of community analysis, providing many more classes of analyses than CANOCO and including numerous nonparametric multivariate techniques. Even so, PC-ORD is much less expensive than CANOCO, allows larger data sets, and a wider selection of graphical representations of comm
