Bar chart

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Last edited Apr 4, 2017

Created on Mar 22, 2017

A bar chart displays categorical values with six colored, semi-transparent rectangles. The visualization maps lettered categories (A through F) to numeric values, with axes labeled and gridlines rendered via D3's SVG axis API. It uses `d3.scale.ordinal` for the x-axis bands and `d3.scale.linear` for the y-axis range, while `d3.svg.axis` generates the ticks. Rectangles are appended and styled with `d3.scale.category10` colors, and the data comes from an inline array of objects with `x` and `y` properties.

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