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Project 1 — Bar Chart

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SSYAM TEJ
Last edited Oct 15, 2025
Created on Oct 15, 2025

A bar chart displays aggregated values by category, with interactive controls that let users choose the categorical and numeric columns to visualize. The chart loads data from a local CSV file using `d3.csv` with `d3.autoType` to infer column types, then builds a sorted bar layout. The D3 v7 code uses `d3.scaleBand` for the x-axis, `d3.scaleLinear` for the y-axis, grid lines via `d3.axisLeft`, and tooltips that follow the mouse. The bars are filled with a blue color, and axes are automatically labeled and rotated for readability.

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MIT Licensed

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