I wrote this simple plugin which compares two dates visits hourly and shows it on a graph.
Thought someone might be interested too.
Tested on 1.5-rc7
Thanks a lot, that feature was really missing!
I made some changes to the Controller.php file to see the whole day at once.
CHANGE: $view = Piwik_ViewDataTable::factory( 'graphVerticalBar'); ADD (before return command): $view->setSortedColumn( 'label', 'asc' ); $view->setLimit( 24 ); $view->setGraphLimit( 24 ); $view->disableExcludeLowPopulation(); $view->disableOffsetInformationAndPaginationControls();