[R] contrast package with interactions in gls model

message: Error en gendata.default(fit = list(modelStruct = list(varStruct = c(-0.253689933940456, : not enough factors I would be grateful if somebody tell me I'm doing wrong with my contrast function script. Thanks in advance, Marylin Bejarano PHd candidate in Ecology Institute of Mexic

[R] p and wald values intra-groups geeglm: geepack

exactamente singular It’s so necessary for me get this comparisons too. Please, I appreciate if you can help me. Marylin Bejarano pH student Instituto de Ecología-UNAM [[alternative HTML version deleted]] __ R-help@r-project.org mailing