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the margin convention

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BBrian Machado
Last edited Jul 2, 2022
Created on Jul 2, 2022

This example demonstrates the margin convention in data visualization by rendering a horizontal bar chart of the ten most populated countries using UN population data for 2020. It shows how chart area coordinates are offset from the SVG canvas using a margin object, translating the inner chart group by the left and top margins. The visualization is built with React and D3 v7, using d3.scaleBand for the categorical y-axis, d3.scaleLinear for the population x-axis, and d3.max to compute the domain. Data is loaded asynchronously via d3.csv from a remote gist URL, and the SVG output is generated declaratively through React components.

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Smiley face implementation with React.

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