CMU

CMU Trail

This interactive EEG data explorer visualizes brainwave activity from the CMU Trail dataset. Users select EEG channels to plot against each other, choose between scatterplot, bar chart, or line graph visualizations, and filter by wave types (Alpha, Beta, Gamma, Delta). The scatterplot uses d3.scaleLinear for axes with animated circle transitions via transition.attr, while the line graph uses d3.line with curveBasis. Data is loaded asynchronously from CSV files using d3.csv, with dropdown menus implemented as a reusable ES6 module component.

86% match

Interactive ScatterPlot

This interactive scatterplot visualizes EEG signal data, plotting pairs of electrode channels (such as F3 vs. F4) as animated circles. Users select the x and y columns from dropdown menus built with a custom ES6 module, and two slider controls adjust the opacity of the circles and background. The visualization uses D3 v6 APIs including `scaleLinear`, `axisLeft`, `axisBottom`, and `transition().duration().delay()` to animate points from the center. The SVG rendering loads data from a CSV file and updates axes and labels on selection.

80% match

Above Line F3

This example visualizes alpha and beta frequency band amplitudes recorded from the F3 electrode in EEG data. The line chart displays signal amplitudes over time, with buttons allowing users to toggle between alpha and beta datasets. The visualization uses D3 v3 and v4 to render SVG paths with green strokes on a black background, featuring zoom controls and axis updates. Data is loaded from local CSV files containing time-series measurements with epoch values.

77% match

Alpha, Beta, Valence

This interactive visualization charts EEG-derived alpha and beta frequency band power from frontal electrodes F3 and F4, alongside a computed valence metric over time. The SVG line chart allows users to toggle between Alpha and Beta datasets, zoom in and out, and click to update axes, with colored lines distinguishing channels and valence segments. It uses D3 v3 and v4 for data binding, scales, axes, and zoom behavior, loading comma-separated values from CSV files.

76% match

ScatterPlot

This scatter plot visualizes the relationship between F3 and F4 EEG signal values, with each circle representing a data point from the CSV file. The plot uses D3 v6's scaleLinear, extent, and axis functions to generate the axes and render the circles as SVG elements. The title "Alpha Power of F3 vs F4" labels the chart, while axis labels and tick marks are styled using CSS.

Multiple Line Chart

This example displays a multiple line chart tracking alpha power EEG signals across F3, F4, C3, Cz, C4, P3, P4, O1, and O2 electrode channels over time (Epoch). Each channel is rendered as a separate line using d3.line() with curveBasis smoothing on an SVG canvas. The code implements linear scales for both axes, axis generators for ticks and labels, and loads the dataset from a CSV file. Styling is defined in an external CSS file, with the visualization built entirely with D3 v6 APIs.

Dynamic Line

This example visualizes EEG frequency band data as multiple animated line charts, tracking signal amplitudes across time for different channels. Each chart displays a line for a specific frequency band (alpha, beta, delta, theta) using distinct colors against a dark background. The visualization employs D3.js version 3's SVG rendering, using `d3.svg.line()` to generate paths and `d3.scale.linear()` for coordinate mapping. Data is loaded from CSV files containing epoch-based measurements from multiple sensor channels. The code renders eight separate SVG charts, each highlighting a different channel's F4 or F3 values.

Alpha, Beta, Arousal

This visualization charts alpha and beta EEG frequency bands from electrodes F3 and F4, alongside a derived arousal metric across epochs. The SVG line chart plots F3 and F4 values from CSV data, with interactive buttons to toggle between frequency bands and zoom controls using d3.behavior.zoom. A legend distinguishes the colored lines, and clicking the chart updates the axes dynamically. Data is loaded via d3.csv and rendered using d3.svg.line and d3.svg.axis.