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Making a Bar Chart

✓ Published2🌍 Public
RRohit K Bharadwaj
Last edited Sep 21, 2019
Created on Sep 21, 2019

This example shows a horizontal bar chart of country populations, with a data file contribution in `data.csv`. `index.js` uses D3 v5’s `select`, `csv`, `scaleLinear`, `scaleBand`, `axisLeft`, and `axisBottom` to create an SVG visualization. It parses the CSV with `csv`, multiplies each population value by 1000, and then renders steelblue rectangles using the linear scale for bar widths and the band scale for row heights. Axis ticks are drawn via `axisLeft` and `axisBottom`, with a margin-based layout translating the main group into the SVG canvas.

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This example displays a horizontal bar chart of country populations, with values read from a CSV file and scaled by 1,000. Using D3 v5, it employs `d3.csv` to load the data, `scaleLinear` and `scaleBand` to map population and country names to positions, and `axisLeft` and `axisBottom` to render axes. Rectangles are appended to an SVG group with margins, sized by the scales, and styled with a steelblue fill.

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