Chandrakant Bharatkumar Thakkar

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Chandrakant Bharatkumar Thakkar

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Last edited Apr 26, 2020

Created on Apr 26, 2020

This example shows a stacked bar chart comparing current and historical values over time, with data tips that appear on hover to reveal percentage changes. Built with D3 v4, the visualization uses SVG rendering and animation to display a diverging stack of two series (`value` and `pastValue`) across daily ticks. The chart calculates axis ranges and tick intervals through custom helper functions, while jQuery is used for tooltip positioning and interaction. The data source is a hardcoded JavaScript array containing daily values with optional annotations, rendered as a cumulative trend with a custom legend and axis styling.

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