Automatic Key Levels, Support and Resistance

This indicator will show the following key levels:

• Support and Resistance
• Previous Year high
• Previous Year low
• Current Year Open
• Previous quarter open and close

To show the key levels enter edit mode (Ctrl+Shift+E), generate the source swing points by choosing the time frame, the type of price vale and the pivot value.
The indicator can stack 3 passes of clustering to find key levels with different granularity: adjust the epsilon and n parameters (can also use Shift +/-, Ctrl-Shift +/- and Ctrl-Alt-Shift +/- to increase or decrease by 1, 5 or 10 pips). There is an extra merge parameter to merge key levels within a pips threshold and generate a new one in the midpoint.
The indicator allows to also add manual key levels: just draw an horizontal line and set the comment to “kl”.
Save your levels and they will be cached for fast retrieval.

Press the ‘Y’ key or ‘K’ key to show/hide the year or support/resistance levels. The indicator also shows the current Symbol spread in the top left and the ATR value (with multiplier) which can be useful when adding ATR to your stop loss (press the ‘S’ key to enable/disable the stats).

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If anything doesn't work as intended, please contact me and I can fix it!