Half Cup [LuxAlgo]The Half Cup indicator detects and displays patterns with the shape of a Half Cup , initiating a channel. From this channel, breakouts are detected and highlighted with dots.
Users can control the shape of the Half Cup and the channel length through various settings.
Do note that the displayed half cups are displayed retrospectively, making them subject to backpainting.
🔶 USAGE
The idea behind the indicator is derived from the Cup & Handle pattern, which requires waiting for the pattern full completion.
Our Half Cup publication aims to find opportunities when the potential cup is only formed halfway.
In this example, a green dot shows the first breakout of the upper channel extremity. A few bars later, the price went under it, after which it returned above, triggering a second green dot. Both triggers were good opportunities in this case, and the price rose afterward.
The Half Cup pattern can be the start of a potential complete Cup & Handle (As in the example above, a complete Cup pattern (without the Handle ) is shown, manually drawn with dashed lines).
Every green/red dot, whether on a bullish or bearish pattern, points to a breakout respectively above/below the channel.
Besides drawing patterns and the corresponding breakouts, the Half Cup indicator can also provide insights into trends and potential opportunities in the long run.
🔶 DETAILS
🔹 Validation
Several criteria must be fulfilled before a visible pattern on the chart is drawn.
Calculations are done beforehand to know where the Half Cup pattern would be positioned.
The pattern's bottom and top edges are checked for the number of bars whose closing price is outside the half-cup area. When the number of breakouts above/below is equal to or lower than the user-defined settings ( Max % Breaks Top/Bottom ), the pattern is drawn together with a brighter-colored channel next to it.
Dots highlighting the channel's breakout can be drawn from that moment until the end of both channel lines.
🔹 Positioning
Users can adjust the following settings to fit their needs:
% Broadness: Moves the Top/Bottom line (bullish or bearish) diagonally upwards/downwards.
Vertical Shift: Shifts the entire pattern up/down.
Channel Length: Sets the line length of the channel.
Note that adjusting the position of the pattern will change the validation; the script will be rerun to check if patterns are still valid or if new patterns can be drawn. Some patterns may disappear, while new ones may appear.
Before adjusting the position, the user can set Max % Breaks Top/Bottom at 100%. When the positioning is set, Max % Breaks Top/Bottom can be set as desired.
🔹 Updated Drawings
The Half Cup pattern is always drawn retrospectively (that is it is subject to backpainting), the channel is drawn from the bar from where the pattern is detected. Every breakout of the channel will remain visible as dots.
When a new swing high/low is found while the previous swing low/high remains the same, the pattern is updated to minimize clutter. The dots of earlier drawings will remain visible (to ensure no repainting occurs), but the color becomes faded, as such bright dots are associated with patterns that are visible on the chart, while faded dots are from removed/updated patterns.
🔶 SETTINGS
Swing Length: Period used for the swing detection, with higher values returning longer-term Swing Levels.
🔹 Validation
Max % Breaks Bottom: Allowed maximum amount of bars where the closing price is below the bottom of the Half Cup pattern against the total width of the pattern (bars).
Max % Breaks Top: Allowed maximum amount of bars where the closing price is above the top of the Half Cup pattern against the total width of the pattern (bars).
🔹 Positioning
% Broadness: Moves the Top/Bottom line (bullish or bearish) diagonally upwards/downwards.
Vertical Shift: Shifts the entire pattern up/down.
Channel Length: Sets the line length of the channel.
Cupandhandlepattern
Pivot Pattern Boundaries [cajole]
This script automatically detects horizontal support / resistance levels based on user-programmable criteria.
For example, you can detect boundaries with >3 touches within 200 days, allowing a tolerance of 1/4*ATR.
"Touches" are defined from pivots on the chart. The best way to search for larger/smaller patterns is to increase/decrease the pivot size.*
Future versions will allow "exceptions (i.e. keep drawing the horizontal line even if it is breached once or twice).
*TradingView's Pine script defines a Pivot as the highest point in a group. So, entering "2" means that a day's high needs to be above 2 days before and after (xxYxx) to be considered a high pivot.
This script can be an aid in drawing multiple patterns with horizontal boundaries (rectangles, triangles, head and shoulders, cup & handles, VCPs). I have intentionally avoided trying to code detection of the "other side" of these patterns, as that is where the craft of charting becomes an art.
Cup & HandleHi, here is my take on 'Cup & Handle'
Pivot Points - ph (highest points in a certain period) are stored in an array
When there is a new ph , previous ph's are compared to the latest one.
A temporary test line is drawn between these 2 points.
The script checks if a close (between these 2 points) doesn't break above this test line.
(test line is deleted afterwards)
If it doesn't, and the '% max breaks' are not breached, 2 circle shaped lines are drawn
(Top & Bottom line of the cup) which forms the Cup, together with the Handle.
The red box (Handle) is the maximum 33-50% retracement (% of cup height)
-> Only the latest pattern is shown, enabling 'Show Cup labels' shows the position of cup patterns in history.
They can be visualised by using 'Bar Replay'
'% max breaks' -> 'maximum highs/lows breaking through the Top/Bottom line
(% of bars between left & right extreme points of the Cup)
Settings:
- 'Left', 'Right' -> regulates Pivot Point values
- 'PP back' -> max lookback for Pivot High
More explanation can be found in following print screens,
or by checking the tooltips in the settings
Cheers!
