search for: monomi

...e a vector of rate equation which will be passed into an ODE function and solved with associated functions from 'deSolve.' Roughly what this entails is scanning through a very large stoichiometric matrix containing integers which map metabolites to reactions and then assembling a series of monomials that describe the rates of the reactions. I'm running into trouble because R does not like doing numerical operations on characters, but I need the rate to be in symbolic form. Below I've described an example. The input is a matrix like this one, but a lot bigger: rxn1 rxn2...

...onsidered. 20 of the predictors are "numeric" and 2 are "factors/discrete". The resulting FDA rule was applied to the 20 trips and for the same predictors in order to predict the type of gear used. however a consistent error is occuring: Error in polybasis(newdata, degree, monomial) %*% object$coef : non-conformable arguments it is possible the problem being related with the 2 predictors that are discrete variables? there is already available some rotine to perform a discrete discriminant analysis considering continuous and discrete variables? if someone can he...

...modify each model by the action of further parameters as: time changes: t -> t+omega, t -> omega*t, t -> t^omega model function change: G(t) -> sign(G(t))*|G(t)|^omega I plan to include models that can be generated by these actions from trig functions, some piecewise linear functions, monomials, and exponential function. My question is: what further parametric models are of sufficiently general interest to be included? Many thanks, Michael Meyer [[alternative HTML version deleted]]