build_fa: Build figural analogies.

In IMak: Item Maker

Build figural analogies.

Description

build_fa generates the information of figural analogies that can be read by plot_fa.

Usage

build_fa(
  isomorphs = 1,
  main.rot = c(0, 0),
  mirror = 0,
  trap.rot = c(0, 0),
  subtract = c(0, 0),
  dot.mov = c(0, 0),
  a.main = "R",
  a.flip = "R",
  a.trap = "R",
  a.dot = "R",
  constrict = F,
  al.main.rot = 0,
  al.mirror = 0,
  al.trap.rot = 0,
  al.subtract = 0,
  al.dot.mov = 0,
  correct = 0,
  add.rule = 0,
  automatic = T
)

Arguments

isomorphs	A number of isomorphic items to be developed.
main.rot	A numeric vector with two main shape rotation values multiple of 45 and between -135 and 180. No rotation: 0.
mirror	A number designating the presence of shape reflection or no reflection (i.e., 1 or 0).
trap.rot	A numeric vector with two trapezium rotation values multiple of 45 and between -135 and 180. No rotation: 0.
subtract	A numeric vector with two line segments of the main shape to subtract from 1 to 5, or letter "R" for a random subtraction. No subtraction: 0.
dot.mov	A numeric vector with two dot edge movement amounts, with a maximum of 5 movements in total. No dot edge movement: 0.
a.main	A numeric vector with possible rotation states of the main shape of Figure A from 1 to 8. Random by default.
a.flip	A logical value designating whether Figure A is flipped with respect to its vertical axis or not (i.e., T or F). Random by default.
a.trap	A numeric vector with possible rotation states of the trapezium of Figure A from 1 to 8. Random by default.
a.dot	A numeric vector with possible dot positions in Figure A from 1 to 6. Random by default.
constrict	A character string designating a part of Figure A to display all possible positions every 'n' isomorphs.
al.main.rot	A numeric vector with alternative main shape rotation solutions. Random by default.
al.mirror	A numeric vector with alternative reflection solutions. Random by default.
al.trap.rot	A numeric vector with alternative trapezium rotation solutions. Random by default.
al.subtract	A numeric vector with alternative subtraction solutions. Random by default.
al.dot.mov	A numeric vector with alternative dot edge movement solutions. Random by default.
correct	A vector with numbers ranging from 1 to 9 for correct response placements. Random by default.
add.rule	A number specifying which rule from 1 to 5 adds itself to the options of one-rule-based items. Random by default.
automatic	Should options be generated by the program? True by default.

Details

Thorough information about the build_fa function can be found in the cited research paper of Blum and Holling (2018). Make sure to read the PDF version of it, since it is clearer. Additional information can also be found on icar-project.com.

Value

An object of class 'fa_items', basically a list including elements to be plotted with function plot_fa.

Author(s)

Diego Blum [e-mail]

References

Blum, D., & Holling, H. (2018). Automatic generation of figural analogies with the IMak package. Frontiers in psychology, 9(1286), 1-13. <DOI:10.3389/fpsyg.2018.01286>

See Also

plot_fa

Examples

## For plotting options, see the plot_fa examples.

## Create two isomorphs with one rule and set the correct answer to 1:
one <- build_fa(isomorphs = 2, dot.mov = c(1, 2), correct = 1)

## Create four isomorphs with two rules:
two <- build_fa(isomorphs = 4, main.rot = c(180, 135), trap.rot = c(90, 45))

## Create 20 isomorphs with three rules. Set automatic = FALSE and affect the options:
three <- build_fa(isomorphs = 20, mirror = 1, trap.rot = c(90, 45), dot.mov = c(1, 2),
automatic = FALSE, al.mirror = c(0, 1), al.trap.rot = -45, al.dot.mov = 1)

## Create four two-rule-based isomorphs, all of them comprising the same Figure A:
four <- build_fa(isomorphs = 4, a.main = 1, a.flip = FALSE, a.trap = 2, a.dot = 6,
mirror = 1, subtract = "R")

## Create 16 isomorphs by constricting the main shape rotation rule:
five <- build_fa(isomorphs = 16, subtract = c(1, 4), constrict = "main")

IMak documentation built on May 2, 2022, 5:08 p.m.