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Hi all, Was wondering if any body would know if the book "Programming with Data" a guide to S language could be used as a guide to working with the R language. Comments, suggestions, a book review is welcomed. Thanks Josef Bohart -------------- next part -------------- An HTML attachment was scrubbed... URL: https://stat.ethz.ch/pipermail/r-help/attachments/19990323/85077490/attachment.html

Hi, I'd like to know whether R is capable to assess parameters in a model describing the kinetic of a pollutant adsorption onto activated carbon. A common relation is for instance the Adam-Bohart-Thomas' one: dx/dt = K1 * (qm-x)*C - K2x where {K1,K2} are the unknown paramters and {qm,C} are known parameters Of course I get experimental data sets of measured x as a function of time. If R can help to handle that, which functions have to be used (diff, optim, nls...) Regards/Cordial...