Who loves Gann Square of 9? Lots of people.
Who likes calculating square of 9 and then manually putting lines on the chart? No one.
Here's a nifty little add-in that you can have draw your Gann Square of 9 pivot lines with just a little bit of configuration based on what is being traded.
Adjust the modifier value to match the price range being traded. I recommend 1 for prices 1-999, 10 for prices above 1000 (like BTC or AMZN), and .001 for Forex.
The base price from which the levels are calculated can be the high, low, hl2, etc. from the Month, Week, Day, Hour previous.
Adjust the rotation to move the levels up or down 360 degrees if the previous period's price was too high or low to put the levels on the current price.
Have fun with it, play with the settings, drop a like, or shoot me a comment for improvements/problems/questions.
Cheers!
Dr. P