Look if TradingView script runs on weekly time frame with Pine Script

Look if TradingView script runs on weekly time frame with Pine Script

TL;DR
timeframe.isweekly returns true whenever the active chart resolution is expressed in weeks (1W, 2W, …). Use it to branch logic or show chart-aware labels.

At a Glance

Difficulty	Beginner
Time to implement	5-10 min
Category	Time & Sessions

Quick Actions

• Open in AI Editor
• Browse PineScript Examples
• Connect to Live Trading

Quick Start

//@version=5
indicator("Weekly detector", overlay=true)

isWeekly = timeframe.isweekly

if barstate.islast
    txt = isWeekly ? "You're on a weekly chart" : "Not a weekly chart"
    label.new(bar_index, close, txt + "\nPeriod: " + timeframe.period,
        style=label.style_label_left,
        textcolor=color.white,
        bgcolor=color.new(isWeekly ? color.green : color.orange, 70))

Tip. Time-frame flags are driven by resolution, not chart style. `timeframe.isweekly` works the same on candles, Renko, or Heikin Ashi—as long as the chart is set to a weekly interval.

Why It Matters

Some strategies only make sense on weekly data, while others should disable themselves to avoid misleading signals. Detecting weekly charts lets you adjust defaults, run heavier calculations, or warn the user when they’re on an unsupported resolution.

What You’ll Learn

• How timeframe.isweekly behaves across chart resolutions.
• Combine the weekly flag with other time-frame helpers and multipliers.
• Present chart-aware labels, alerts, or parameter changes when weekly mode is active.
• Best practices to avoid unnecessary checks each bar.

Quick Reference

Helper	Purpose
timeframe.isweekly	true for weekly-based bars (1W, 2W, etc.).
timeframe.period	Human-readable period string ("W", "2W").
timeframe.multiplier	Numeric multiplier for the current period (1 for 1W, 4 for 4W).
barstate.islastconfirmedhistory	Runs logic once on the last historical bar—useful for labels.
request.security(symbol, timeframe, expression)	Fetch higher/lower time frame data when weekly is detected.

Implementation Blueprint

1. Check the weekly flag
   Evaluate timeframe.isweekly once per bar and cache the result.

   isWeekly = timeframe.isweekly

2. Branch behaviour
   Use the flag to enable or skip logic, choose settings, or show notices.

   emaLen = isWeekly ? 13 : 55
   weeklyOnlySignal = isWeekly and ta.crossover(close, ta.ema(close, emaLen))

3. (Optional) Fetch helper data
   Pair with timeframe.period or timeframe.multiplier for labels, or load additional series via request.security.

   weeklyMultiplier = timeframe.multiplier

Example Playbook

//@version=5
indicator("Weekly-aware trend filter", overlay=true, max_labels_count=500)

fastLen = input.int(13, "EMA length (weekly)")
slowLen = input.int(55, "EMA length (non-weekly)")

isWeekly = timeframe.isweekly
ema = ta.ema(close, isWeekly ? fastLen : slowLen)
plot(ema, "Adaptive EMA", color=color.new(color.blue, 0))

trendUp = close > ema

bgcolor(isWeekly ? color.new(color.green, 88) : na, title="Weekly backdrop")

if barstate.islast
    label.new(bar_index, close,
        text="Weekly: " + (isWeekly ? "YES" : "NO") +
             "\nPeriod: " + timeframe.period +
             "\nMultiplier: " + str.tostring(timeframe.multiplier),
        style=label.style_label_left,
        textcolor=color.white,
        bgcolor=color.new(isWeekly ? color.green : color.gray, 70))

Why this works.

• EMA length adapts automatically, so the same script stays responsive on weekly and non-weekly charts.
• Background colouring highlights when the chart runs in weekly mode.
• A summary label confirms the active period and multiplier for quick debugging.

Pro Tips & Pitfalls

• Weekly flags encompass “multi-week” resolutions (2W, 4W). Use timeframe.multiplier to differentiate them.
• Combine with timeframe.isdwm to catch daily/weekly/monthly groupings in one conditional when needed.
• If you only want to run heavy logic once per new week, pair timeframe.isweekly with ta.change(time("W")).
• When disabling trades, ensure you also cancel pending orders to avoid unexpected fills.

Troubleshooting & FAQ

timeframe.isweekly is always false

Double-check the chart resolution; custom ranges (e.g., 10 range) are not weekly data. Switch to a weekly preset like 1W or 2W.

Can I check higher-than-weekly charts?

Use the other helpers: timeframe.ismonthly, timeframe.isdaily, etc. You can also compare timeframe.multiplier against thresholds (timeframe.isweekly and timeframe.multiplier >= 4).

Does the chart type matter?

No. The flag is based entirely on bar timing, so Renko, Line Break, and Heikin Ashi still honour the weekly interval behind the scenes.

Key Takeaways

• timeframe.isweekly tells you when the chart uses a weekly-based resolution.
• Use the flag to enable/disable logic, adjust parameters, or show user-facing guidance.
• Pair with timeframe.period/timeframe.multiplier for richer context or to differentiate multi-week settings.
• Keep weekly-specific work lightweight by running infrequent tasks on barstate.islast or ta.change(time("W")).

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Keep Going

• Open AI Editor to apply the pattern with guided assistance
• Browse PineScript Examples for ready-to-run templates
• Connect to Live Trading when you are ready to automate

Adapted from tradingcode.net, optimised for Algo Trade Analytics users.