MultiLine: Pre-processing of multi-line reading data
In martin-vasilev/EMreading: Automatic pre-processing of eye-movement reading data

MultiLine

R Documentation

Pre-processing of multi-line reading data

Description

This function reads in data from .asc files and performs the pre-processing.

Usage

MultiLine(
  data_list = NULL,
  ResX = 1920,
  ResY = 1080,
  maxtrial = 120,
  tBlink = 50,
  reAlign = TRUE,
  RSpar = c(1/4, 8, 2/3),
  textStim = NULL,
  ppl = NULL,
  xOffset = NULL,
  plot = FALSE
)

Arguments

`data_list`	Input of data files to be processed. This can be specified in three ways: a directory that contains all the files (it will select all files ending with ".asc", and order them by participant number, if present). Directory to a txt file that contains all the .asc data file names inside: e.g., data_list= "C:/My Data/data_list.txt". In the .txt file, the directory for each .asc data file should appear on a separate row, e.g.: C:/My Data/subject1.asc /n C:/My Data/subject2.asc A directory to a single .asc file: e.g., data_list= "C:/My Data/subject1.asc".
`ResX`	X screen resolution in pixels
`ResY`	Y screen resolution in pixels
`maxtrial`	Maximum number of trials in the experiment
`tBlink`	Time in milliseconds for detecting blinks before or after fixation. If there is a blink x milliseconds before or after the fixation, it will be marked as having a blink. The default is 50 ms.
`textStim`	An optional parameter for cases when the text stimuli are not printed to the .asc files. If this is the case, please provide a directory to a txt file containing the stimuli sentences used in the experiment. Each sentences should be placed on a new line and the stimuli should be ordered in the way that they were presented in the experiment (i.e., sentence 1 should be on line 1 and so on). You will also need to provide information about the width of letters and the offset of the text on the x-axis (see below). The default is NULL for cases when the text stimuli are printed to the .asc files.
`ppl`	Pixels per letter in the experiment (i.e., the width of each letter on the screen). Please note that this function currently works only with fixed-width (i.e., monospaced) fonts. Not needed if the text stimuli were printed to the data.
`xOffset`	Offset of the text in pixels on the x-axis of the screen. This should be the pixel location where the first letter of the sentence starts. Not needed if the text stimuli were printed to the data.
`plot`	A logical indicating whether to plot the raw and re-aligned fixations as an image file. The default is TRUE. If set to FALSE, no images will be plotted. Note that plotting images will generally take longer time to pre-process the data. The images are saved in the current working directory in the folder "img".