This code snippet demonstrates how to create a screener based on the Tenkan Sen indicator, commonly used in Ichimoku Kinko Hyo charting. The screener checks if the closing price has been consistently above the Tenkan Sen line over the last 10 periods.

Tenkansen = (highest[9]+lowest[9])/2
test = summation[10](close>tenkansen)=10
screener[test]

The code snippet provided is structured to perform the following operations:

• Calculate the Tenkan Sen: The Tenkan Sen line is calculated as the average of the highest high and the lowest low over the past 9 periods. This is represented by the formula (highest[9]+lowest[9])/2.
• Define the test condition: The test variable checks if the closing price has been above the Tenkan Sen line for each of the last 10 periods. This is done using the summation[10](close>tenkansen)=10 expression, which sums the number of true instances (where the close is greater than Tenkan Sen) over the last 10 periods and checks if this sum equals 10.
• Output the screener result: The screener[test] function outputs the result of the test. If the test condition is true (i.e., the closing price was above the Tenkan Sen line for all the last 10 periods), the screener will flag this condition.

This example is useful for understanding how to implement custom screeners in ProBuilder that can help identify specific conditions over a set number of periods.