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PostGraph
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PostGraph is a free PHP class for creating bar graphs. It allows you to create professionally looking graphs by calling few simple methods.
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ChartDirector (PHP Edition)
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ChartDirector is a fast and powerful charting component for creating professional and clickable charts. Its innovative ChartDirector Mark Up Language, flexible object oriented API, layering architecture and advanced coloring system provide unprecedent chart design, formatting and customization capabilities to developers. Supports numerous chart types - Pie, donut, bar, line, spline, step line, trend line, curve-fitting, inter-line coloring, area, scatter, bubble, floating box, box-whisker, waterfall, finance (numerous indicators support), gantt, vector, radar, polar, rose, angular and linear meters and guages. Easy to use and with comprehensive documentation. Come with numerous examples.
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phPie()
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phPie() is a PHP4 script that creates a PNG (or GIF or JPG) format pie chart, with optional legend.
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JpGraph
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JpGraph is a OO Graph drawing library for PHP4 as well as PHP5. Highlighted features: Supports both text, linear and log scale for both X and Y-axis; Supports image maps; Supports anti-aliasing of lines; Background image; Supports color-gradient fill; Supports both, GIF, JPG and PNG formats; Supports two Y-axis; Supports spider plots, pie-charts (2D and 3D), lineplots, filled line plots, impuls plots, bar plots (both vertical and horizontal), error plots, field plots, box plots, candle charts,Polar plots and Gantt charts; Multiple plot types in one graph; Intelligent autoscaling; alpha-blending and clipping and many more features.
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PHP - HTML Chart
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This script is a simple, cross-browser, yet complete, introduction to creating HTML bar charts using PHP. It has been purposely left simple so that you can easily customize it for your needs.
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