validate_and_expand_xind

Validates that xind has the correct dimensions and is in increasing order,
then expands a vector or single-row matrix to a full n x nxgrid matrix.
Used by [ff()] and [sff()].

internal

Methods for regression for functional
data, including function-on-scalar, scalar-on-function, and
function-on-function regression. Some of the functions are applicable to
image data.

Julia Wrobel

refund

Regression with Functional Data

Jeff Goldsmith

Fabian Scheipl

Lei Huang

Chongzhi Di

Jonathan Gellar

Jaroslaw Harezlak

Bruce Swihart

Luo Xiao

Ciprian Crainiceanu

Yakuan Chen

Sonja Greven

Lan Huo

So Young Park

Ana-Maria Staicu

Erjia Cui

Ruonan Li

Zheyuan Li

validate_and_expand_xind function

<dl><dt>xind</dt>
<dd>Vector or matrix of x-index values.</dd>
<dt>n</dt>
<dd>Number of observations.</dd>
<dt>nxgrid</dt>
<dd>Number of grid points (columns expected).</dd>
<dt>arg_name</dt>
<dd>Name of the argument for error messages.</dd></dl>

Arguments

Validate and expand xind to matrix form — validate_and_expand_xind

<dl>

<dt>xind</dt>
<dd>Vector or matrix of x-index values.</dd>


<dt>n</dt>
<dd>Number of observations.</dd>


<dt>nxgrid</dt>
<dd>Number of grid points (columns expected).</dd>


<dt>arg_name</dt>
<dd>Name of the argument for error messages.</dd>

</dl>

Validate and expand xind to matrix form

validate_and_expand_xind: Validate and expand xind to matrix form

Description

Usage

Value

Arguments