there isnt reeally an easy way to do that as the reports functions need to run as a wordpress user with “wppizza reports” capabilities

but i’ll see if i can add a couple of parameters in a few places which would allow you to run some functions manually
and you allows you to then do with the output whatever it is you need to do

As of v3.12.1 there is also now the wppizza_reports_data() function available
see
https://docs.wp-pizza.com/developers/?section=create-your-own-sales-report