Progress Graphs and Stats for Learned and Matured Cards

Important: For Anki versions 2.1.28 and higher you need to shift+click on the stats link to view the old stats page with these graphs. Anki includes a Review Count graph that plots the total reviews for learning, relearning, young, and mature cards. This graph is great if you want to know how many reviews occurred in each category, but it can be difficult to understand progress using it. Since one of the goals is to learn cards and have them eventually mature, this plugin tracks statistics for that specifically. The plugin adds the graphs below to Anki under the pie chart in the statistics section. After installing the plugin, be sure to restart the app for the changes to take effect. If you experience any other issues, try updating Anki and/or reinstalling the plugin in case fixes have been made. Report issues to the GitHub page. I'll usually respond within 24 hours. If you previously installed the plugin and are seeing any errors, check the Version History below for updates. Follow the GitHub project if you'd like to be notified about updates and/or issues. Learned Cards This is the number of cards that were learned. A card is considered "learned" if it leaves the learning phase. This ignores cards that were relearned. This also plots the cumulative total. When this is plotted over the deck lifetime, the final cumulative total roughly equals the number of young cards plus the number of matured cards plus the number of young and mature cards that are suspended. This graph should help you track whether you are meeting your goals for number of cards learned per day. For example, if you have a goal of 20 new cards learned per day and each day 20 cards pass through the learning phase, then you should see a value of 20 for each day and an average of 20 cards learned per day. If you start learning a card but it doesn't exit the learning phase until the next day, then the next day will include this card in its count. Note that this is different from how the default Anki graphs count learned cards. Anki's default graphs track the number of reviews in the learning phase, not the number of distinct cards learned. Net Matured Cards This is the net change in the number of matured cards, equal to the number of matured cards minus the number of cards that were mature but were forgotten. A card is considered "matured" when its interval increases to 21 days or above and forgotten when its interval drop below 21 days. This also plots the cumulative total. When this is plotted over the deck lifetime, the final cumulative total roughly equals the number of matured cards plus the number of matured cards that are suspended. Matured Cards This is the number of matured cards, as explained above. This is included to help understand the values in the Net Matured Cards graph. Matured Cards Lost This is the number of matured cards lost, as explained above. This is included to help understand the values in the Net Matured Cards graph. Version History

• 0.1: Initial Release
• 0.2: Fix for error when no reviews
• 0.3: Fix learned cards wrong for filtered deck
• 0.4: Fix Anki yaxis tick rounding issue
• 0.5: Fix issue including relearned cards in Learned Cards graph
• 0.6: Revert recent learned cards changes pending better solution for filtered decks
• 0.7: More robust detection of learned cards
• 0.8: Improve graph performance
• 0.9: Fix calculation of matured cards due to apparent lastIvl bug in revlog table
• 0.10: Fix bug with last_ivl leading to overcounting of mature cards
• 0.11: Fix import warning about _ (thanks klieret). Set absolute maximum value of cumulative line as ymax (thanks mattbenscho).
• 0.12: Move graphs above pie chart.
• 0.13: Set y axis min based on data. Fix bucket labels for Anki 2.1. Fix deck life bucket ticks for young decks.
• 0.14: Fix issue with incorrect x axis tick units in some scenarios (Issue #16).
• 0.15: Fix issue computing stats for beta of Anki 2.1.24.

Issues to address in next version None reported.