Here is a tutorial that introduces you to Google Graphs API, or Google Chart Tools, and its Histogram functionality.
Google Chart Tools provide a perfect way to visualize data on your website. From simple line charts to complex hierarchical tree maps, the chart galley provides a large number of well-designed chart types. Populating your data is easy using the provided client- and server-side tools.
Let’s see some PHP code in live action for this tutorial where you define your histogram characteristics and data.
Link to some downloadable PHP programming code … rename to histogram_chart.php.
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