TomDemarkSequential
TomDemarkSequential(name: str = 'TomDemarkSequential')
Bases: WindowIndicator[IBaseDataBar]
Represents the Tom Demark Sequential indicator, which is used to identify potential trend exhaustion points. This implementation tracks both the setup and countdown phases, and can be extended to handle bullish and bearish setups, as well as qualifiers such as Perfect Setups and Countdown completions.
- Setup Phase: Detects a trend by counting 9 consecutive bars where the close is less than (Buy Setup) or greater than (Sell Setup) the close 4 bars earlier.
- TDST Support/Resistance: After a valid 9-bar setup completes, the indicator records the lowest low (for Sell Setup) or highest high (for Buy Setup) among the 9 bars. These are referred to as Support Price(for Buy Setup) and Resistance Price (for Sell Setup), and serve as critical thresholds that validate the continuation of the countdown phase.
- Countdown Phase: Once a valid setup is completed, the indicator attempts to count 13 qualifying bars (not necessarily consecutive) where the close is less than (Buy Countdown) or greater than (Sell Countdown) the low/high 2 bars earlier. During this phase, the TDST Support/Resistance levels are checked — if the price breaks these levels, the countdown phase is reset, as the trend reversal condition is considered invalidated.
Initializes a new instance of the TomDemarkSequential indicator.
Parameters:
| Name | Type | Description | Default |
|---|---|---|---|
name
|
str
|
The name of the indicator. |
'TomDemarkSequential'
|
resistance_price: float
Gets the current resistance price calculated during a Tom Demark Sequential buy setup. This is the highest high of the 9-bar setup and can act as a resistance level.
support_price: float
Gets the current support price calculated during a Tom Demark Sequential sell setup. This is the lowest low of the 9-bar setup and can act as a support level.
setup_phase_step_count: int
Gets the current Setup step count in the active Tom Demark Sequential (Buy/Sell) Setup phase (e.g., 1 to 9 in Setup), 0 if not in setup phase.
countdown_phase_step_count: int
Gets the current Countdown step count in the active TomDemark Sequential (Buy/Sell) Countdown phase (e.g., 1 to 13 in Setup), 0 if bar is not in Countdown phase.
is_ready: bool
Gets a value indicating whether the indicator is ready and fully initialized. Returns true when at least 6 bars have been received, which is the minimum required for checking for pre-requisite price flips and for comparing the current close price to the close price 4 bars ago (used in the setup logic).
warm_up_period: int
Gets the number of data points (bars) required before the indicator is considered ready. The TomDemark Sequential setup logic requires at least 6 bars to begin evaluating valid setups.
consolidators: ISet[IDataConsolidator]
The data consolidators associated with this indicator if any
current: IndicatorDataPoint
Gets the current state of this indicator. If the state has not been updated then the time on the value will equal DateTime.MinValue.
previous: IndicatorDataPoint
Gets the previous state of this indicator. If the state has not been updated then the time on the value will equal DateTime.MinValue.
name: str
Gets a name for this indicator
samples: int
Gets the number of samples processed by this indicator
updated: _EventContainer[
Callable[[Object, IndicatorDataPoint], Any], Any
]
Event handler that fires after this indicator is updated
window: RollingWindow[IndicatorDataPoint]
A rolling window keeping a history of the indicator values of a given period
period: int
Gets the period of this window indicator
compute_next_value(
window: IReadOnlyWindow[IBaseDataBar],
current: IBaseDataBar,
) -> float
Computes the next value of the TD Sequential indicator based on the provided TradeBar.
This codeEntityType is protected.
Parameters:
| Name | Type | Description | Default |
|---|---|---|---|
window
|
IReadOnlyWindow[IBaseDataBar]
|
The window of data held in this indicator |
required |
current
|
IBaseDataBar
|
The current input value to this indicator on this time step |
required |
Returns:
| Type | Description |
|---|---|
float
|
The TomDemarkSequentialPhase state of the TD Sequential indicator for the current bar. |
reset() -> None
Resets the indicator to its initial state by clearing all internal counters, flags, and historical bar data. This allows the indicator to be reused from a clean state.
__eq__(right: float) -> bool
__eq__(right: IndicatorBase) -> bool
__eq__(right: float) -> bool
__eq__(right: IndicatorBase) -> bool
__eq__(right: int) -> bool
__eq__(right: IndicatorBase) -> bool
__eq__(right: int) -> bool
__eq__(right: IndicatorBase) -> bool
Signature descriptions:
-
Determines if the indicator's current value is equal to the specified value
-
Determines if the specified value is equal to the indicator's current value
__ge__(right: float) -> bool
__ge__(right: IndicatorBase) -> bool
__ge__(right: float) -> bool
__ge__(right: IndicatorBase) -> bool
__ge__(right: int) -> bool
__ge__(right: IndicatorBase) -> bool
__ge__(right: int) -> bool
__ge__(right: IndicatorBase) -> bool
Signature descriptions:
-
Determines if the indicator's current value is greater than or equal to the specified value
-
Determines if the specified value is greater than or equal to the indicator's current value
__gt__(right: float) -> bool
__gt__(right: IndicatorBase) -> bool
__gt__(right: float) -> bool
__gt__(right: IndicatorBase) -> bool
__gt__(right: int) -> bool
__gt__(right: IndicatorBase) -> bool
__gt__(right: int) -> bool
__gt__(right: IndicatorBase) -> bool
Signature descriptions:
-
Determines if the indicator's current value is greater than the specified value
-
Determines if the specified value is greater than the indicator's current value
__le__(right: float) -> bool
__le__(right: IndicatorBase) -> bool
__le__(right: float) -> bool
__le__(right: IndicatorBase) -> bool
__le__(right: int) -> bool
__le__(right: IndicatorBase) -> bool
__le__(right: int) -> bool
__le__(right: IndicatorBase) -> bool
Signature descriptions:
-
Determines if the indicator's current value is less than or equal to the specified value
-
Determines if the specified value is less than or equal to the indicator's current value
__lt__(right: float) -> bool
__lt__(right: IndicatorBase) -> bool
__lt__(right: float) -> bool
__lt__(right: IndicatorBase) -> bool
__lt__(right: int) -> bool
__lt__(right: IndicatorBase) -> bool
__lt__(right: int) -> bool
__lt__(right: IndicatorBase) -> bool
Signature descriptions:
-
Determines if the indicator's current value is less than the specified value
-
Determines if the specified value is less than the indicator's current value
__ne__(right: float) -> bool
__ne__(right: IndicatorBase) -> bool
__ne__(right: float) -> bool
__ne__(right: IndicatorBase) -> bool
__ne__(right: int) -> bool
__ne__(right: IndicatorBase) -> bool
__ne__(right: int) -> bool
__ne__(right: IndicatorBase) -> bool
Signature descriptions:
-
Determines if the indicator's current value is not equal to the specified value
-
Determines if the specified value is not equal to the indicator's current value
compare_to(obj: Any) -> int
compare_to(other: IIndicator) -> int
Signature descriptions:
-
Compares the current instance with another object of the same type and returns an integer that indicates whether the current instance precedes, follows, or occurs in the same position in the sort order as the other object.
-
Compares the current object with another object of the same type.
Parameters:
| Name | Type | Description | Default |
|---|---|---|---|
obj
|
Optional[Any]
|
An object to compare with this instance. |
None
|
other
|
Optional[IIndicator]
|
An object to compare with this object. |
None
|
Returns:
| Type | Description |
|---|---|
int
|
Depends on the signature used. Case 1: [A value that indicates the relative order of the objects being compared. The return value has these meanings: Value Meaning Less than zero This instance precedes obj in the sort order. Zero This instance occurs in the same position in the sort order as obj. Greater than zero This instance follows obj in the sort order.]; Case 2: [A value that indicates the relative order of the objects being compared. The return value has the following meanings: Value Meaning Less than zero This object is less than the other parameter.Zero This object is equal to other. Greater than zero This object is greater than other.] |
update(input: IBaseData) -> bool
update(time: Union[datetime, date], value: float) -> bool
Updates the state of this indicator with the given value and returns true if this indicator is ready, false otherwise
Parameters:
| Name | Type | Description | Default |
|---|---|---|---|
input
|
Optional[IBaseData]
|
The value to use to update this indicator |
None
|
time
|
Optional[Union[datetime, date]]
|
The time associated with the value |
None
|
value
|
Optional[float]
|
The value to use to update this indicator |
None
|
Returns:
| Type | Description |
|---|---|
bool
|
True if this indicator is ready, false otherwise. |
__getitem__(i: int) -> IndicatorDataPoint
Indexes the history windows, where index 0 is the most recent indicator value. If index is greater or equal than the current count, it returns null. If the index is greater or equal than the window size, it returns null and resizes the windows to i + 1.
Parameters:
| Name | Type | Description | Default |
|---|---|---|---|
i
|
int
|
The index |
required |
Returns:
| Type | Description |
|---|---|
IndicatorDataPoint
|
the ith most recent indicator value. |
equals(obj: Any) -> bool
Determines whether the specified object is equal to the current object.
Parameters:
| Name | Type | Description | Default |
|---|---|---|---|
obj
|
Any
|
The object to compare with the current object. |
required |
Returns:
| Type | Description |
|---|---|
bool
|
true if the specified object is equal to the current object; otherwise, false. |
get_enumerator() -> IEnumerator[IndicatorDataPoint]
Returns an enumerator that iterates through the history window.
Returns:
| Type | Description |
|---|---|
IEnumerator[IndicatorDataPoint]
|
A System.Collections.Generic.IEnumerator`1 that can be used to iterate through the history window. |
get_hash_code() -> int
Get Hash Code for this Object
Returns:
| Type | Description |
|---|---|
int
|
Integer Hash Code. |
on_updated(consolidated: IndicatorDataPoint) -> None
Event invocator for the Updated event
This codeEntityType is protected.
Parameters:
| Name | Type | Description | Default |
|---|---|---|---|
consolidated
|
IndicatorDataPoint
|
This is the new piece of data produced by this indicator |
required |
to_detailed_string() -> str
Provides a more detailed string of this indicator in the form of {Name} - {Value}
Returns:
| Type | Description |
|---|---|
str
|
A detailed string of this indicator's current state. |
to_string() -> str
ToString Overload for Indicator Base
Returns:
| Type | Description |
|---|---|
str
|
String representation of the indicator. |
validate_and_compute_next_value(
input: QuantConnect_Indicators_IndicatorBase_T,
) -> IndicatorResult
Computes the next value of this indicator from the given state and returns an instance of the IndicatorResult class
This codeEntityType is protected.
Parameters:
| Name | Type | Description | Default |
|---|---|---|---|
input
|
QuantConnect_Indicators_IndicatorBase_T
|
The input given to the indicator |
required |
Returns:
| Type | Description |
|---|---|
IndicatorResult
|
An IndicatorResult object including the status of the indicator. |