The above example shows you how to create `ColumnChart` using built-in Google Charts. In this example, for purpose of chart demonstration only, we do use mock-up data from array. As you can see, the KoolReport's widget in general support dataSource could be DataStore, Process, DataSource or even simple array.
For example:
...
"options" => array(
...
"trendlines" => [
0 => ["type" => 'linear', "lineWidth" => 5, "opacity" => .3],
1 => ["type" => 'exponential', "lineWidth" => 10, "opacity" => .3]
]
)