Variable functions are used within the "variables" section of your JSON configuration file to process and store data from your json data file. These functions help you calculate specific values that you can later use in the content functions to display information on your report.
Here, the true power of using json config files is harnessed. You can use the Angles.js functions to calculate and store values for your report. The "var_name" can then be used to recall the calculations in the content functions.
e.g: "variables": {"var_name": ["function", "row_name", [{"qualifier_category": "qualifier_name", "attributes":{"attribute_category": "attribute_name"} }] , "start_time", "end_time" ] }
Below is a list of the functions currently available: