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...supposed to be the best one, I?m probably doing something wrong. Has anyone faced this kind of problem? Or has anyone any idea how to solve that? Thanks and Regards Gustavo Requena PhD student - Laboratory of Arthropod Behavior and Evolution Universidade de S?o Paulo http://ecologia.ib.usp.br/opilio/gustavo.html -- View this message in context: http://r.789695.n4.nabble.com/Logistic-regression-with-factorial-effect-tp3049208p3049208.html Sent from the R help mailing list archive at Nabble.com.

By any chance is it possible to "add" filled.contour(...) to an existing plot like you can do using image(..., add = TRUE). I looked at the filed.contour(...) and levelplot(...) documentation, but it didn't seem to be possible. I would like to add filled.plot(...) as shown below instead of using the image(...). Filled.contour seems to provide the smoothing interpolation

Hi everybody, If I am correct, you can compare a model with random effect with the same model without the random effect by using the nlme function, like this: no.random.model <- gls(Richness ~ NAP * fExp, method = "REML", data = RIKZ) random.model <- lme(Richness ~NAP * fExp, data = RIKZ, random = ~1 | fBeach, method = "REML")

hello - a question about filled.contour plots, for which i haven't found a response in previous posts - sorry if already treated. i'd like to draw several filled.contour plots (that is, maps) on the same device (a postscript file, actually). I know about layout(matrix) , split.screen or par(mfrow) : it works well for simple plots, but with filled.contour plots, i get several pages