aStep1: Create Set of Observation Numbers in Step 1 for Linear Model...

In forsearch: Diagnostic Analysis Using Forward Search Procedure for Various Models

Create Set of Observation Numbers in Step 1 for Linear Model Analysis

Description

Derives the first set of observation numbers for forsearch in linear models

Usage

aStep1(yesfactor, df1, df1.ls, inner.rank, initial.sample, formulaA, 
   nofactform, ycol, b.d)

Arguments

yesfactor	Logical. TRUE if there are factors in the X matrix
df1	Data frame being analyzed by forward search.
df1.ls	List, each element of which is a factor subset of df1
inner.rank	Rank of X matrix of lm analysis on entire database
initial.sample	Number of random samples from which to take set of initial observations
formulaA	Fixed parameter formula of lm function
nofactform	2-sided formula excluding factor variables
ycol	Response column number
b.d	Index of point to begin diagnostic listings

Details

Support function, usually not called independently

Value

Produces set of observation numbers for Step 1. Accounts for presence of factors in the dataset

Note

Presence of Observation column has no effect on outcome

Author(s)

William R. Fairweather

forsearch documentation built on April 4, 2025, 5:52 a.m.