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Parallel Coordinates

An interactive chart specialized for comparing and exploring multidimensional data

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What is this tool?

An interactive chart specialized for comparing and exploring multidimensional data. Simply upload a CSV file, and numeric columns are displayed as parallel axes with each row drawn as a polyline crossing them. Brushing on each axis lets you filter data matching specific conditions, making it easy to discover patterns and outliers intuitively.

Features

  • Brushing: Drag vertically on each axis to specify a range and filter data matching the conditions
  • Axis reordering: Drag column names horizontally to rearrange axis order. Place related metrics side by side for comparison
  • Scale switching: Toggle between three modes — Original (raw values), Min-Max (0–1 normalization), and Z-Score (standardization)
  • Table synchronization: The data table below syncs with brushing results. Hovering over a row highlights the corresponding line on the chart
  • Export: Export filtered results as CSV and chart images as SVG/PNG
  • Share — Share the current view via URL. OGP images for social media are generated automatically
  • Project saving: Save and restore data and settings (scale, axis order, brush ranges) to the cloud with thumbnails

How to use

  • Click “CSV Upload” to load your data (or try “Sample” to use yogurt nutrition data)
  • Drag vertically on an axis to narrow down a range of interest
  • Switch the Scale to Min-Max or Z-Score as needed to compare metrics with different units
  • Drag axis names horizontally to place items you want to compare next to each other
  • Hover over a table row to highlight the corresponding line on the chart
  • Export results as CSV/SVG/PNG, or save as a project to the cloud

Data format

  • File format: CSV (comma-separated, UTF-8)
  • Structure: First row as header (column names), subsequent rows as data
  • Numeric columns: Automatically detected and displayed as chart axes
  • String columns: Shown in the table but not included as chart axes
  • Missing values: Empty cells are treated as missing
Last updated on 2026-04-12