A simple function to detect input from the user, and keep prompting until a response matching the class of input required is given.

methods

User-friendly interface utilities for MCMC models via
Just Another Gibbs Sampler (JAGS), facilitating the use of parallel
(or distributed) processors for multiple chains, automated control
of convergence and sample length diagnostics, and evaluation of the
performance of a model using drop-k validation or against simulated
data. Template model specifications can be generated using a standard
lme4-style formula interface to assist users less familiar with the
BUGS syntax.  A JAGS extension module provides additional distributions
including the Pareto family of distributions, the DuMouchel prior and
the half-Cauchy prior.

Matthew Denwood

runjags

Interface Utilities, Model Templates, Parallel Computing Methods
and Additional Distributions for MCMC Models in JAGS

Martyn Plummer

ask function

<dl><dt>prompt</dt>
<dd>what text string should be used to prompt the user? (character string)</dd>
<dt>type</dt>
<dd>the class of object expected to be returned - "logical", "numeric", "integer", "character". If the user input does not match this return, the prompt is repeated</dd>
<dt>bounds</dt>
<dd>the lower and upper bounds of number to be returned. Ignored if type is "logical" or "character".</dd>
<dt>na.allow</dt>
<dd>if TRUE, allows the user to input "NA" for any type, which is returned as NA</dd></dl>

Arguments

Obtain Input from User With Error Handling — ask

<dl>

<dt>prompt</dt>
<dd>what text string should be used to prompt the user? (character string)</dd>


<dt>type</dt>
<dd>the class of object expected to be returned - "logical", "numeric", "integer", "character". If the user input does not match this return, the prompt is repeated</dd>


<dt>bounds</dt>
<dd>the lower and upper bounds of number to be returned. Ignored if type is "logical" or "character".</dd>


<dt>na.allow</dt>
<dd>if TRUE, allows the user to input "NA" for any type, which is returned as NA</dd>

</dl>

ask: Obtain Input from User With Error Handling

Description

Usage

Arguments

See Also