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ScanPath2

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PPatricijaC
Last edited May 23, 2020
Created on May 23, 2020
Forked from Density plot

This visualization displays eye-tracking scan paths overlaid on a metro map of Antwerp, with circles representing fixation points sized by fixation duration and colored by user. Lines connect consecutive fixations per participant, revealing individual viewing patterns. The code uses D3 v4 with d3-contour, d3-scale-chromatic, and SVG rendering, loading data from a CSV of timestamped gaze coordinates. Hover interactions reveal fixation duration and user information via tooltips.

AI-generated description

A visualization of the Old Faithful Dataset

Uses d3-contour.

Draws from bl.ocks.org: Density Contours

MIT Licensed

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Scan Path

This example visualizes eye-tracking scan paths over a map of Antwerp, showing fixation points as circles sized by fixation duration and colored by participant, with connecting lines tracing each user’s viewing sequence. The visualization uses d3.csv to load data, d3.nest to group fixations by user, and d3.line with scaleLinear for positioning. Interactive tooltips display fixation duration and user information, while hover effects highlight individual paths. The underlying map is applied as a CSS background image, and rendering uses SVG with d3.scaleOrdinal for categorical colors.

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The visualization displays eye-tracking scan paths over a map of Antwerp’s metro system, with each participant’s fixations drawn as colored circles and connected by sequential lines. Circle size encodes fixation duration, while color identifies the user, and hovering reveals exact duration and participant details. Built with D3 v5, it uses `scaleLinear` for the x/y axes, `scaleOrdinal` with `schemeCategory10` for colors, and `nest` to group data by user, rendering paths and circles as SVG elements on a styled background.

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The scan path visualization plots eye-tracking fixations from a CSV file, with each circle sized by fixation duration and colored by participant, while connecting lines trace the viewing sequence per user over a metro map background. The SVG rendering uses d3.scaleLinear for coordinates, d3.scaleOrdinal with schemeCategory10 for colors, and d3.nest to group data by user. Interactive tooltips display exact duration and participant details on hover.

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