Learn how to use RealEye.io - Online Research Platform with Webcam Eye-Tracking

Beata Lewandowska
Written by Beata Lewandowska

CSV file: Fixations


Besides the Raw Data export and AOI data export, there is also an option of downloading the fixation data as a CSV file.

The file contains the following:

  • string study_id - UUID,
  • string item_id - UUID,
  • string item_filename - the name of your file, as it was named while adding to the study,
  • string item_cdn_url - URL to the tested item saved on our servers,
  • string participant_id - UUID,
  • string participant_external_id - UUID (in case you provide one by connecting your study with an external tool, i.e., a survey),
  • string participant_display_name - a name that a participant gives while asked about a name, gender, and age at the end of the study (if you have chosen that option), i.e., "Anna, Female, 27",
  • string participant_tags - tags assigned to a participant (added by the study owner),
  • int participant_quality_grade - participant's grade from 1 to 6 where:
  • 1 = very low,
  • 2 = low,
  • 3 = average,
  • 4 = good,
  • 5 = very good,
  • 6 = perfect;
  • int participant_quality_grade_item - item's grade from 1 to 6 where:
  • 1 = very low,
  • 2 = low,
  • 3 = average,
  • 4 = good,
  • 5 = very good,
  • 6 = perfect;
  • int test_item_display_order - a number indicating the order in which the items were displayed,
  • int exposure_number - (only applicable for Website Mockup studies) indicates the time the participant saw an item, i.e., 1 means that the participant saw this item for the first time,
  • float fixation_point_x - the x coordinate of fixation expressed as a percentage of the displayed item size,
  • float fixation_point_y - the y coordinate of fixation expressed as a percentage of the displayed item size,
  • int fixation_starts_at_ms - when the fixation appeared (counting from the beginning of displaying the item),
  • int fixation_ends_at_ms - when the fixation disappeared (counting from the beginning of displaying the item),
  • int fixation_duration_ms - for how long lasted the fixation,
  • int saccade_amplitude_percent - amplitude of a saccade between the given and net fixation (if the saccade appears and meets the criteria of the fixation filters) expressed as a percentage of the displayed item size,
  • string external_data_debug - all the external variables assigned to the participant (if applicable),
  • notes:
  • RealEye version,
  • fixation filter settings:
  • gazepoint interpolation (Hz) - to improve calculations we interpolate the data to 60 Hz;
  • gazepoint interpolation max gap (ms) - we interpolate data if the timestamp gap between two input values is not bigger than this value (50 ms);
  • gaze velocity threshold;
  • min. fixation duration (Ms);
  • max. fixation duration (Ms);
  • moving median range (Ms);
  • saccade max duration (Ms);
  • TestCriteria - data was downloaded for participants:
  • age=min:max,
  • isGenderMale={true/false},
  • isGenderFemale={true/false},
  • isGenderOther={true/false},
  • isGenderNotSpecified={true/false},
  • qualityMin={from1 to 6},
  • qualityMax={from 1 to 6},
  • tags={tag1},{tag2},...,
  • keys=KEY{anykey},
  • isParticipantTypeRealEye={true/false},
  • isParticipantTypeNonRealEye={true/false},
  • timestamp of when the file was downloaded.

See the CSV file for the sample study:

API: https://www.realeye.io/docs/api/#fixations-data-export

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