This script makes projections via drawing boxes based upon changes in the fed funds rate (FRED:EFFR).
It works by turning the change in the fed funds rate into a user defined percentage (using a multiplier, by default a 1% rate of change implies a 10% change in the chart) and then drawing a box that distance away depending on the direction of the rate of change....
AMEX:SPY
Comparison of the Overnight Bank Fund Rate and the Effective Federal Funds Rate.
The Fed sets a discount rate of 100 basis points above the effective federal funds rate to discourage ("penalize") banks from borrowing from its reserves. If lending banks have excess in their reserves, the borrowing banks have ease in negotiating a lower rate overnight...