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| - | vs8ENq <a href="http://pwquxvhnwyeq.com/">pwquxvhnwyeq</a>, [url=http://qfakqffceydy.com/]qfakqffceydy[/url], [link=http://fdjflidjkuwq.com/]fdjflidjkuwq[/link], http://uwrsxsnnpvca.com/ | + | ===== Overview ===== |
| + | [[http://www.libgd.org|libgd]] is an open source library that allows developers to dynamically generate images. It is integrated with PHP. | ||
| + | |||
| + | ===== Case Studies ===== | ||
| + | * Audiogalaxy.com used it to build graphs of music popularity over time. We also used it to chart internal statistics. | ||
| + | |||
| + | ===== Gotchas ===== | ||
| + | * | ||
| + | |||
| + | ===== Tips & Tricks ===== | ||
| + | * Consider caching your images after generating them to reduce CPU usage. | ||
| + | |||
| + | |||
| + | ===== Alternatives ===== | ||
| + | * For generating charts of things like bandwidth or file system usage over time, consider [[rrdtool]]. | ||
| + | * For drawing abstract graphs and networks, consider [[http://graphviz.org/|Graphviz]] | ||
| + | |||
| + | ===== Other Resources ==== | ||
| + | * The [[http://news.php.net/php.gd.devel|libgd discussion archive]] may help you find answers to problems. | ||