code_sawtooth_design {RGremlinsConjoint}

Convert a Sawtooth Software generated design file to a dummy coded design file

Description

Take a design file such as those generated by the Sawtooth Software 'Lighthouse Studio' and convert it into a dummy coded design file. The last level in the attribute is considered the reference level and will be dropped.

Usage

code_sawtooth_design(
  sawtooth_design,
  columns_to_code = c(4:ncol(sawtooth_design)),
  include_none_option = FALSE
)

Arguments

sawtooth_design

A matrix that contains the Sawtooth design. Can be loaded with read.csv.

columns_to_code

(Optional, Default = all columns) A vector listing the numeric index of the columns to code. Note: The first column is column 4 due to the control variables

include_none_option

(Optional, Default = FALSE) A boolean value indicating whether to expand the task to include a none option

Details

This function is written to not require converting columns to be factors. All variables should be numeric indexes for the levels of the attributes. If you would like to manually code a attribute of the design, for example if you have a price variable, you must manually code that attribute and then can call the function with the optional columns to code parameter.

Value

A matrix object chat contains the dummy coded design file. The last attribute is considered the reference level

See Also

/urlhttp://www.sawtoothsoftware.com/help/lighthouse-studio/manual/index.html?hid_web_cbc_exporting.html

Documentation for the Sawtooth Software Design file format can be found at

Examples

## Not run: 
 # Read in the Sawtooth Formatted data
 design <- read.csv("Design.csv")
 prices = c(0.79, 1.29, 1.79, 2.29, 2.79)
 design$price <- prices[design$price]
 codedDesign <- codeSawtoothDesignFile(design, c(4:9))

## End(Not run)