ChemReact

ChemReact1

ChemReact2

These data are from a central composite design with 2 factors in 2 blocks.
 The design variables are in actual, not coded, form.

datasets

Provides functions to generate response-surface designs,
fit first- and second-order response-surface models,
make surface plots, obtain the path of steepest ascent,
and do canonical analysis. A good reference on these methods
is Chapter 10 of Wu, C-F J and Hamada, M (2009)
"Experiments: Planning, Analysis, and Parameter Design Optimization"
ISBN 978-0-471-69946-0. An early version of the package is
documented in Journal of Statistical Software <doi:10.18637/jss.v032.i07>.

Russell Lenth

Response-Surface Analysis

ChemReact function

A data frame with 14 observations on the following 4 variables.<dl>
 <dt><code>Time</code></dt>
<dd>a numeric vector; design variable with settings of 80, 85, and 90.</dd> <dt><code>Temp</code></dt>
<dd>a numeric vector; design variable with settings of 170, 175, and 180.</dd> <dt><code>Block</code></dt>
<dd>a factor with levels <code>B1</code> <code>B2</code>.
 Block <code>B1</code> is a first-order design with 3 center points. 
 Block <code>B2</code> consists of axis points and 3 more center points.</dd> <dt><code>Yield</code></dt>
<dd>a numeric vector; response variable: yield of the chemical process.</dd> 
</dl><code>ChemReact1</code> and <code>ChemReact2</code> are the separate blocks. 
 Each has 7 runs and three variables (<code>Block</code> is excluded from these).

Format

Chemical Reaction Data — ChemReact

A data frame with 14 observations on the following 4 variables.<dl>
 <dt><code>Time</code></dt>
<dd>a numeric vector; design variable with settings of 80, 85, and 90.</dd>

 <dt><code>Temp</code></dt>
<dd>a numeric vector; design variable with settings of 170, 175, and 180.</dd>

 <dt><code>Block</code></dt>
<dd>a factor with levels <code>B1</code> <code>B2</code>.
 Block <code>B1</code> is a first-order design with 3 center points. 
 Block <code>B2</code> consists of axis points and 3 more center points.</dd>

 <dt><code>Yield</code></dt>
<dd>a numeric vector; response variable: yield of the chemical process.</dd>

 
</dl><code>ChemReact1</code> and <code>ChemReact2</code> are the separate blocks. 
 Each has 7 runs and three variables (<code>Block</code> is excluded from these).

ChemReact: Chemical Reaction Data

Description

Usage

Arguments

Format