
 Userpoints History
 ------------------

 This module generates graphical representation of user points evolution.
 

 Pre-Instalation
 ---------------

 This module requires the "Chart API" module (http://www.drupal.org/project/chart).
 Just enabling the module would be enough.

 Under Permissions section you will find the options: 

 - access history information - to view graphs of all users
 - access own history information - only show graph for own user


 Configuration
 -------------

 Go to "Points settings" page (admin/settings/userpoints). You will see a section 
 called "History configuration". Uncollapsing this section will show a few options
 to customize the generated image.

 Usage
 -----
 
 When you are in a user page (/user/%uid ) and have enough permissions, a new tab
 called "History" will show a graph with the evolution of the user points for 
 this user (could be your own user).

 You may also select wich of the categories will be shown (this one requires more work). 

  - user/%uid/history       Uncategorized as the default. 
  - user/%uid/history/0     All categories at the same time
  - user/%uid/history/1,2   Just 1 or 2 or more categories.
 

 TODO
 ----

 Many things to do, the most important:
  - separate graph generation to be called from other places (block, tabs, other sections.. )
  - make the set of attributes required for the graph configurable.
  - deal with deleted transactions..
  - see source for more @todo tags 