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Hi R-users! I'd like to know how to avoid automatic coercion of numeric variables passed to array() to character, when there is one categorical variable between others. I have tried I() function, but it is just functional in data.frame. Best Regards! Eduardo Dutra de Armas

...__________________________ _ Universidade de São Paulo - Escola Superior de Agricultura Luiz de Queiroz Depto. de Ciência do Solo - Laboratório de Microbiologia Molecular Av. Pádua Dias 11, Bairro São Judas, CEP 13418-900 Piracicaba, SP, Brasil - Fone: (55-19)34172160 - Cel: (55-19)81924072 Skype: edarmas (Áreas de atuação: Poluição de solo e água, Biogeodinâmica de poluentes, Modelagem Hidrogeoquímica, Gerenciamento de Áreas Contaminadas, Análise de Risco, Biodegradação, Microbiologia Ambiental) ____________________________________________________________________________ _ -- Checked by AVG...

Dear R-users, I'm trying to solve the following equation, to get a set of values satisfying it and I'd like to know if its possible to do that in R. 0.85*(54.6-X)^2 + 4.65*(25.2 - Y)^2 -2*0.84*(54.6-X)*(25.2-Y) <= 8.29 Thanks a lot, Eduardo Armas --- [[alternative HTML version deleted]]

Hi R-users Does anyone know how to increase the resolution of plots to be exported? I'm exporting some plots but the maximum resolution that I get is 96 dpi. I want to get files with 300dpi. Thanks! __________________________________________________________ Eng. Agr., M.Sc. Eduardo Dutra de Armas __________________________________________________________ Centro de Energia Nuclear na

Dear R helpers I have a daily rainfall dataset of 5 stations, but the time-series are of different lengths. Three stations measured precipitation from 1917 to 2004, one from 1930 to 1979, and other from 1975 to 1998. I'd like to know how to analyse if rainfall is similiar at all stations. Is it possible to compare time-series like these? Best Regards!