by TrueDataChart — Symbol & Timeframes
Changing the symbol
The symbol control in the toolbar sets which instrument the chart draws. Use it to load any stock, index, future or option across NSE, BSE or MCX (see Finding Symbols for how search works).
You can also load a chart from another module — clicking a watchlist row, a heatmap tile or an option-chain cell opens or updates a chart for that symbol. If the chart is linked, selecting a symbol in any linked panel changes it here automatically.
When the symbol changes, the chart keeps your timeframe, chart type, indicators and drawings, and re-fits the view to the new data.
Timeframes
The Timeframe selector sets the duration of each bar. The built-in presets are:
| Minutes | Hours | Days+ |
|---|---|---|
| 1m · 3m · 5m · 15m · 30m | 1h · 4h | 1D · 1W · 1M |
Pro and Max also get 15s and 30s bars, described below.
Choose Custom… to enter any minute value (e.g. a 2m or 45m bar) when a preset doesn't fit your style.
Seconds bars (Pro and Max)
The interval menu opens with a Seconds group: 15s and 30s. These bars are not served by the backend. The chart builds them in the browser from the feed's one-second rows (live) and from the raw tick history (older bars), so they carry what those rows carry and nothing more:
- One row = one second. A 15s bar holds at most 15 rows; a second with no trade sends no row, so a bar with fewer rows is a quiet bar, not a feed gap.
- Volume is the sum of each second's traded quantity; open, high, low and close come from each second's last price.
- Buy / sell, delta and CVD use an inferred side: the backend's inference on live rows, the quote rule then the tick rule on history. It is not an exchange aggressor flag, so a seconds bar's delta can differ from the 1m bar beside it and may shift where history meets live.
- Open interest is the level the feed re-sent on the bar's last traded row.
- Trades in Bar Statistics and the Data Inspector count traded seconds, not executions; the Inspector shows this as Seconds with trades: 14 / 15.
- Footprint cells on a seconds bar are per-second volume at the second's last price. For execution-level footprints use the minute intervals.
History follows the plan's raw tick window: Pro loads today and the last 3 trading days, Max loads the open-ended tick window. Index spot symbols carry no traded rows, so they show no seconds bars; use the index future or an option. Seconds bars are built from traded rows only, so scrolling back past the loaded window does not fetch more.
Server alerts have no seconds intervals: an alert opened from a 15s or 30s chart is evaluated on 5m bars, and the alert dialog says so.
The buttons in the toolbar are your quick intervals. Open the arrow beside them for the full list, where you choose which intervals are pinned to the toolbar and enter a custom interval.
Shorter timeframes show finer detail but cover less calendar time on screen; higher timeframes compress more history into the same width. The chart fetches the history it needs for the timeframe you pick.
Tick-based bars
Two chart modes build bars from trades rather than the clock, so they ignore the timeframe selector and use their own input instead:
- Tick Number — a new bar every N trades. Set N in the Tick Count input that appears in the toolbar.
- Tick Range — a new bar each time price moves by a set amount. Set the amount in the Tick Range input.
These reveal activity that time-based bars smear together — bursts of trades print more bars; quiet periods print fewer. See Chart Types for how they compare to candlesticks and the other modes.
Jumping to a date
Go to at the bottom-left of the chart moves the view to a date and time, or to a range between two dates. Times are in the exchange's timezone.
The on-chart controls that appear when you hover the bottom of the chart — Pan left / right, Zoom out / in, Reset view and Go to latest — move the view without changing the symbol or timeframe.