Description Usage Arguments Details Examples
Create an instance of a Choices class using data from an external text file.
1 2 | choicesFromFile(input_file, choice_id_header, gamble_id_header,
outcome_id_header, objective_consequence_header, probability_header, DELIMITER)
|
input_file |
text, the input_file. |
choice_id_header |
text, the column name of the choice_id variable. |
gamble_id_header |
text, the column name of the gamble_id variable. |
outcome_id_header |
text, the column name of the outcome_id variable. |
objective_consequence_header |
text, the column name of the objective_consequence variable. |
probability_header, |
the column name of the probability_string variable. |
DELIMITER |
text, the delimeter character separating the fields in the input file. |
This function is used to create a new instance of a Choices class from an external text file. This file has at least 5 columns, delimited by the DELIMITER character string. Each row of the file contains an individual outcome. The last line of the file needs to be a blank row. An example input file describing the Allais constant ratio paradox looks like this, with the DELIMITER being a "\t".
choice_id gamble_id outcome_id probability objective_consequence
1 1 1 1 3000
1 2 1 0.8 4000
1 2 2 0.2 0
2 1 1 0.25 3000
2 1 2 0.75 0
2 2 1 0.2 4000
2 2 2 0.8 0
——
Note that the last line is a blank row.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 | # This example loads up the choices for the Allais constant ratio paradox, which
# are available as text files in the pt package.
my_input_file <- system.file("external", "allais_constant_ratio_paradox.txt", package="pt")
my_choices <- choicesFromFile(input_file=my_input_file,
choice_id_header="choice_id",
gamble_id_header="gamble_id",
outcome_id_header="outcome_id",
objective_consequence_header="objective_consequence",
probability_header="probability",
DELIMITER="\t")
my_choices
|
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