The graph stats block was originally developed by Éric Bugnet (https://github.com/ebugnet/graph_stats) and his repo works correctly on Moodle 2.0 - 2.4 with help from Jean Fruitet.
In Moodle 2.5+ you start to see issues with the block and this is why I updated the code to work on Moodle 2.5, 2.6+ and also added some new features.
I will continue to maintain the plugin and add new features as requested.
20140424
- Removed Moodle graphing
- Graph is now 100% width (Responsive)
- Changed settings for colours to colour pickers
- Optimized code + tidy up
- Code corrected using Moodle Code Checker
20140423
- Check and fixed with Moodle Code Checker
- Changed HTML code to use html::writer API
20140416
- Added Simplified Chinese Language pack
- Started running Moodle Code Checker on Block (WIP)
20140415
- Working Moodle 2.5+ version committed to repo
Moodle Plugin: https://moodle.org/plugins/view.php?plugin=block_graph_stats