For each date, calculates the count of symbols for which a formula can be evaluated on that date and stores that value in the data item array for every symbol.
Syntax
#Count formula
Example
HaveDataToday: #Count Close
Counts how many symbols have a bar for this date and stores that value in today's slot for each symbol.
Notes
If the formula result is nan (not a number -- unable to calculate)then that stock is not included in the count.
