expon {fda} | R Documentation |
Evaluates a set of exponential basis functions, or a derivative of these functions, at a set of arguments.
expon(x, ratevec=1, nderiv=0)
x |
A vector of argument values at which the exponential basis functions are to evaluated. |
ratevec |
A vector of rate values defining the exponential basis functions. If b is such a rate value, the corresponding basis function is ebx. The number of basis functions is equal to the number of rate constants. The default is the single constant one. |
nderiv |
The derivative to be evaluated. The derivative must not exceed the order. The default derivative is 0, meaning that the basis functions themselves are evaluated. |
A matrix of function values. The number of rows equals the number of arguments, and the number of columns equals the number of basis