Using the Show Plot tool, it’s possible to automatically plot various levels on the chart, eg 50% of the all-time high, or 38.2% and 61.8% Fib levels [as per this Bitcoin example].
In the Script Editor window, enter a name and save the following as an indicator in the same view, changing the plot colours and linestyles as required. This will then be added to your toolbox.
V1 = HIGHESTHIGH(RANGE=All Time) ; plot1 = V1; plot2 = V1 * 0.5; plot3 = V1 * 0.618; plot4 = V1 * 0.382; plot1.Colour = Green; plot1.Linestyle = Dash; plot2.Colour = Red; plot2.Linestyle = Dash; plot3.Colour = Blue; plot3.Linestyle = Dash; plot4.Colour = Blue; plot4.Linestyle = Dash;
You can also use the same concept in scans or a watchlist to show when these levels are crossed, eg. when crossing the 38.2% level from the high:
CLOSE() Crosses (HIGHESTHIGH(RANGE=All Time)*0.618)
