AG Pro PDH PDL PWH PWL Engine [AGPro Series]AG Pro PDH PDL PWH PWL Engine
Overview / What it does
AG Pro PDH PDL PWH PWL Engine is a price-reference overlay built to track prior day, prior week, and prior month high / low levels in a clean and structured way. The script can display PDH, PDL, PWH, PWL, and optionally PMH / PML, together with midpoint equilibrium levels for the selected ranges.
The main purpose of the script is not to predict direction, generate guaranteed entries, or replace a complete trading plan. Its role is narrower and more practical: it helps traders keep important prior-period reference levels visible on the chart, distinguish which levels remain active, and identify which ones have already been traded through. In many markets, prior highs and lows are widely monitored as liquidity, reaction, and reference areas. This script organizes those areas into a format that is easier to read in live conditions.
A core design goal of this tool is chart hygiene. Many prior-level indicators become visually noisy when several daily, weekly, and monthly references are drawn together. This script was designed to keep the structure readable by using a minimal label system, right-extended lines, a swept / unswept state model, and an optional dashboard that summarizes the nearest active daily, weekly, and monthly levels.
The result is a workflow-oriented overlay that helps with context. Instead of forcing interpretation through aggressive signals, it presents a structured map of where important prior-period levels are located, whether they are still untouched, and whether current price is approaching one of them. That makes it suitable for traders who want an objective level engine rather than a directional prediction tool.
Unique Edge
The script focuses on presentation quality and state clarity rather than simple level plotting. Prior highs and lows are not rare concepts, but the practical usefulness of such levels depends heavily on how they are filtered, displayed, and maintained on the chart. This script aims to improve that usability in several ways.
First, it separates active levels from swept levels. This matters because a previously untouched level and a level that has already been traded through do not carry the same contextual value for many traders. By visually differentiating unswept and swept references, the overlay can help reduce ambiguity when reviewing current structure.
Second, it combines multi-period references in one coherent engine. Daily, weekly, and optional monthly levels can all be displayed together, while preserving a relatively clean visual hierarchy. This is particularly useful for traders who want to see whether current price is interacting with short-term references inside larger higher-timeframe ranges.
Third, it includes proximity logic. The script can highlight levels when price is near them using a threshold defined in ticks, percentage, or ATR terms. This does not imply a trade signal by itself. Instead, it acts as a situational awareness feature that helps traders notice when price is entering a predefined level zone.
Fourth, the script offers session and timezone controls. That allows the user to adapt the level-building logic to the exchange clock or to a chosen session definition. For traders who care about session-based construction and consistency across instruments, this can be an important operational detail.
Finally, the panel is designed as a compact summary rather than a decorative feature. It reports the nearest active daily, weekly, and monthly references, shows counts for active and swept levels, and keeps session / timezone / label mode settings visible. The goal is to reduce chart scanning time and make the script easier to use during live analysis.
Methodology
The engine tracks highs and lows from completed prior periods and then projects those values forward as reference lines. Depending on the enabled settings, it can build:
- Previous Day High and Previous Day Low
- Previous Week High and Previous Week Low
- Previous Month High and Previous Month Low
- Optional equilibrium midpoints for each enabled range
Each level is created only after the relevant source period is completed. In that sense, the level itself is based on completed historical range data. Once created, the line is monitored for its state. If price trades through a high reference or a low reference, the script marks that level as swept and changes its visual treatment accordingly.
The script also maintains historical periods up to the number defined in the settings. This makes it possible to preserve a limited amount of recent structure without keeping an unlimited number of stale objects on the chart.
The equilibrium option adds the midpoint of the corresponding prior range. Some traders use these 50% areas as balance references or as secondary context between the prior high and low. Because that midpoint is optional, the user can keep it visible when needed or disable it for a cleaner chart.
The proximity engine measures how close current price is to an active level using one of three methods:
- Tick distance
- Percentage distance
- ATR-based distance
This feature is meant to flag nearness, not to define trade quality on its own. A prior level being near price does not automatically make the setup actionable. It only states that price is close to a tracked reference according to the selected threshold logic.
States / Signals / Alerts
This script is primarily a level-state and context tool. It is not a directional forecasting model. Its most important outputs are state-based:
1) Active level
A level is considered active when it has been created from a completed prior period and has not yet been traded through by price.
2) Swept level
A level is considered swept when price trades through that reference. Visually separating swept levels from active ones helps the chart communicate which prior references remain untouched.
3) Near-level condition
When enabled, the script can highlight active levels that are close to current price according to the user-defined threshold method. This can help traders focus attention on nearby reference zones without scanning the entire chart manually.
4) Compact dashboard state
The panel summarizes the nearest active daily, weekly, and monthly levels, along with active count, swept count, near count, selected timezone, session configuration, and label mode.
The included alert conditions are intentionally simple and state-based:
- Price is near one of the active levels
- At least one tracked level was swept on the current bar
These alerts are meant to support monitoring. They are not, by themselves, a complete trading trigger. Users should interpret them together with structure, volatility, session context, confirmation rules, and their own risk process.
Why this script can be useful
This script can be useful because prior highs and lows often matter most when they are easy to monitor and hard to misread. In practice, traders do not only need the raw numbers; they need a chart presentation that allows those numbers to remain readable during fast market conditions.
A clean prior-level map can help in several common situations:
- Evaluating whether price is approaching an untouched daily or weekly reference
- Checking whether a local move is happening inside a larger higher-timeframe level framework
- Distinguishing still-relevant references from already-tested ones
- Monitoring potential reaction zones without crowding the chart with excessive objects
- Organizing reference structure across intraday and swing workflows
The script is also designed to remain practical over time. Instead of drawing everything with equal visual importance, it uses state logic and summary logic to keep the display more structured. That can make the tool easier to integrate into a routine where prior-period references are part of the trader's contextual process.
Another useful aspect is that the script stays objective. It does not attempt to label every market move with a strong opinion. It shows completed prior-period levels, their current state, and whether price is approaching them. Many traders prefer this kind of neutral reference framework because it can be combined with other methodologies without forcing one interpretation.
Key Inputs
Timezone
The script can use the exchange timezone or a selected timezone. This affects how period transitions are interpreted.
Use Custom Session Filter
When enabled, highs and lows are built only from bars inside the selected session. This allows the user to adapt the range construction to a chosen session framework.
Session
Defines the custom session window when session filtering is enabled.
Show Previous Day / Week / Month Levels
Each group can be enabled or disabled independently so the user can decide how much structure to display.
Show Equilibrium Midpoints
Adds the 50% midpoint of each enabled prior range.
Historical Periods to Keep
Controls how many past periods remain visible on the chart for each enabled level family.
Proximity Threshold Type
Lets the user define nearness by ticks, percentage, or ATR.
Threshold Value / ATR Length
Controls the sensitivity of the proximity logic.
Highlight Levels When Near
Allows visual emphasis when price approaches an active level.
Line Style and Extension Settings
Controls the appearance of unswept and swept lines and whether active lines extend to the right.
Minimal Label Mode
Allows labels to be turned off, restricted, or shown for active levels, depending on the user's preferred chart cleanliness.
Panel Controls
The dashboard can be enabled or disabled and its size, position, and colors can be adjusted.
Example use cases
This script can be used in different ways depending on the trader's workflow.
Intraday context mapping:
A trader may monitor PDH and PDL together with PWH and PWL to understand whether intraday price is moving into untouched daily liquidity while still operating inside a broader weekly range.
Reaction-zone awareness:
A trader may use near-level highlighting to notice when price is approaching an unswept prior high or prior low and then look for separate confirmation with their own method.
Structure filtering:
A trader may ignore swept references and focus mainly on active levels that remain intact, especially when trying to simplify the chart during live sessions.
Session-based reference building:
A trader who prefers a specific session logic can use the session filter so the constructed ranges better match their market framework.
Dashboard monitoring:
A trader may use the panel as a quick situational summary to identify which daily, weekly, or monthly reference is closest without manually reading every line.
Limitations & Transparency
This script does not know why price interacts with a level. It only identifies prior-period references and tracks whether they are active, near, or swept according to the rules defined in the code.
A prior level is not automatically support or resistance in every market condition. Some reactions are meaningful, some are shallow, and some levels are passed through with little response. For that reason, the script should be treated as a structured reference map rather than a self-sufficient trade decision engine.
The near-level logic depends on user-defined thresholds. Different threshold types and values can materially change how often levels are classified as near. Traders should calibrate these settings according to instrument volatility and their own workflow.
Session and timezone choices also matter. The same market can produce different prior-period values depending on how the session is defined. Users should select settings that match the way they analyze the instrument.
Historical object limits, chart timeframe, and chart compression can influence how dense the display appears. A setting that looks clean on one instrument or timeframe may feel crowded on another. The script provides controls to manage that, but users should still adapt it to their own use case.
The midpoint equilibrium lines are optional because not every trader uses 50% references the same way. Their inclusion does not imply that the midpoint has universal predictive value. It is simply provided as an additional structural reference.
This script is intentionally conservative in what it claims. It does not claim to detect institutional intent, hidden order flow, or guaranteed reversals. It displays prior completed reference levels and their current state on the chart.
Risk Disclosure
This script is for chart analysis and educational use. It does not provide financial advice, investment advice, or trade recommendations.
Prior-period highs, lows, and midpoint references can be useful market context, but they are not guarantees of reaction, reversal, continuation, or liquidity behavior. Market conditions can change quickly, and price can move through any level without producing a tradable setup.
Users should combine this tool with their own confirmation process, execution rules, position sizing framework, and risk management. No indicator should be used as the sole basis for entering or exiting a trade.
Before using any chart tool in live markets, it is important to understand how its settings affect output, how it behaves on the instrument being traded, and how it fits into a broader decision process.
AG Pro PDH PDL PWH PWL Engine is designed to help organize prior-period level information in a cleaner and more operational format. Its value comes from clarity, state tracking, and context support, not from predictive certainty.
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