I would like start with the charts empty. And then, when I choose the options in the filter panes, chart begin to draw the lines and the information.
Beacuse now I see that select all options in filter panes is the same than not select anything.
I was thinkig about create a variable of the filters panes to check is something was selected or no.
How I can make this? Change something in the expresion of the chart? modify the expresion of the filter panes? Writing in the data loading script?
Can somebody help me?
Thanks and regards.