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Display Setup

screen_pixel_coords

screen_pixel_coords = <left> <top> <right> <bottom>

Sets the gaze-position coordinate system, which is used for all calibration target locations and drawing commands. Usually set to correspond to the pixel mapping of the participant display. Issue the calibration_type command after changing this to recompute fixation target positions.

You should also write a DISPLAY_COORDS message to the start of the EDF file to record the display resolution.

Arguments:

screen_write_prescale

screen_write_prescale = <multiplier>

Sets the value by which gaze position data is multiplied before writing to EDF file or link as integer. This is nominally 10, but should be reduced for displays with greater than 1500x1500 pixels, or increased for gaze coordinate systems with less than 150x150 units.

Arguments:


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