In Tableau 9.2, I currently have a parameter set up which contains multiple string values and an additional "All" value. I also have a calculated field which only contains the Str([some_field])
function. I have then dragged this calculated field into the "filters" pane and from there enabled "use all" and put the following formula under the "condition" tab:
// If All is selected, then do not filter
[my_filter_parameter] = 'All' OR
// Otherwise, filter on the current parameter
[my_filter_parameter] = [my_calculated_Field]
After creating the calculated field for multiple sheets in my dashboard (which use different data sources all contain the common some_field), then I can change the parameter's value and it will filter all of the sheets at once.
My issue is that I need this to take on multiple values at once via a check-box. I understand that a parameter can only take on one value at a time, so I am wondering how I can do this without making the same filter for each individual sheet in the dashboard. Perhaps this can be done with a calculated field?
EDIT: I have tried the technique here to make a global filter via a control view. This allows me to use Ctrl+Clicking to select multiple values in some_field at once, however I still do not have a dropdown box. Alternatively, if anyone knows how to use this method with a dropdown box, then that would be another solution.
All
choice. – Nick