DUALVOLUME('N'): the return value indicates the quantity difference between active buying and active selling.
DRAWCOLUMNCHART(X, C 1, C2), where x represents the column height. When the condition of C 1 is met, the column is drawn from the 0 axis; if it is not met, it is red; if it is not met, it is green.
The formula is:
Volume ratio = total volume/(average volume per minute in the past 5 days × cumulative opening time of the day (minutes))
When the equivalence ratio is greater than 1, it means that the average transaction per minute on that day is greater than the average of the last five days, and the transaction is hotter than the last five days; When the equivalence ratio is less than 1, it means that the current transaction is not as good as the average level of the past five days.