expon {fda} | R Documentation |

## Exponential Basis Function Values

### Description

Evaluates a set of exponential basis functions, or a derivative of these functions, at a set of arguments.

### Usage

expon(x, ratevec=1, nderiv=0)

### Arguments

`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. |

### Details

### Value

A matrix of function values. The number of rows equals the number of arguments, and the number of columns equals the number of basis

### Note

### Author(s)

### References

### See Also

### Examples

[Package

*fda* version 1.0

Index]