R: Item derivatives with respect to the location in the latent...

rpf.dTheta {rpf} | R Documentation

## Item derivatives with respect to the location in the latent space

### Description

Evaluate the partial derivatives of the response probability with respect to ability. See rpf.info for an application.

### Usage

    rpf.dTheta(m, param, where, dir)

### Arguments

`m` | item model
`param` | item parameters
`where` | location in the latent distribution
`dir` | if more than 1 factor, a basis vector]

[Package rpf version 0.59 Index]