All available Free Pro versions are listed below (They are very similar and I don't want to publish them as separate indicators):
ver 1.0: style columns implementation
ver 2.0: style histogram implementation
ver 3.0: style line implementation
This indicator calculates for a given range and shows it as a histogram consisting of 25 horizontal bars.
It can also show Point of Control (POC), Developing POC, Value Area/ StdDev High/Low as dynamically moving levels.
Free accounts can't access Standard TradingView , hence this indicator.
There are 3 basic methods to calculate the Value Area for a session.
- original method developed by Steidlmayr (calculated around POC)
- classical method using StdDev (calculated around the mean )
- another method based on the mean absolute deviation (calculated around the median)
POC is a high node and can be used as . But when far from the day's average price it may not be as good a trend filter as the other methods.
The 80% Rule: When the market opens above/below the Value Area and then returns/stays back inside for 2 consecutive 30min periods it has 80% chance of filling VA (like a gap).
There are several versions: Free, Free Pro, Free MAX. This is the Free Pro version. The Differences are listed below:
- Free: 30 levels, Buy/Sell/Total views, POC
- Free Pro: 25 levels, +Developing POC, Value Area/ High/Low Levels, Above/Below Area Dimming
- Free MAX: 50 levels, packed to the limit
- with up to 25 levels (3 implementations)
- POC, Developing POC Levels
- Buy/Sell/Total/Side by Side View modes
- Side Cover
- Value Area, VAH/VAL dynamic levels
- High/Low dynamic levels with Source, Length, StdDev as params
- Show/Hide all levels
- Dim Non Value Area Zones
- Custom Range with Highlighting
- 3 Anchor points for
- Flip Levels Horizontally
- Adjustable width, offset and spacing of levels
- Custom Color for POC/VA/ levels and Transparency for buy/sell levels
- specify max_level/min_level for a range (required in ver 1.0/2.0, auto/optional in ver 3.0 = set to highest/lowest)
- select range (start_bar, range length), confirm with range highlighting
- select mode Value Area or to show corresponding levels.
- flip/select anchor point to position the buy/sell levels, adjust width and spacing as needed
- select Buy/Sell/Total/Side by Side view mode
- use POC/Developing POC/VA/ High/Low as S/R levels. Usually daily values from 1-3 days back are used as levels for the current day.
- Green - buy of a specific price level in a range, Red - sell . Green + Red = Total of a price level in a range
There's no native support for vertical histograms in Pinescript (with price axis as base)
Basically, there are 4 ways to plot a series of horizontal bars stacked on top of each other:
1. plotshape style labeldown (ver 0 prototype discarded)
- you can have a set of fixed width/height text labels consisting of a series of underscores and moving dynamically as levels. Level offset controls visible length.
- you can move levels and scale the base width of the histogram dynamically
- you can calculate the highest/lowest range values automatically. max_level/min_level inputs are optional
- you can't fill the gaps between levels/adjust/extend width, height - this results in a half baked and looks ugly
- fixed text level height doesn't adjust and looks bad on a log scale
- fixed font width also doesn't scale and can't be properly aligned with bars when zooming
2. plot style columns + hist_base (ver 1.0)
- you can plot long horizontal bars using a series of small adjacent vertical columns with level offsets controlling visible length.
- you can't hide/move levels of the histogram dynamically on each bar, they must be plotted at all times regardless - you can't delete the history of a plot.
- you can't scale the base width of the histogram dynamically, can't set show_last from input, must use a preset fixed width for each level
- hist_base can only be a static const expression, can't be assigned highest/lowest range values automatically - you have to specify max_level/min_level manually from input
- you can't control spacing between columns - there's an equalizer bar effect when you zoom in, and solid bars when you zoom out
- using hist_base for levels results in ugly load/redraw times - give it 3-5 sec to finalize its shape after each UI param change
- level top can be properly aligned with another level's bottom producing a clean good looking histogram
- columns are properly aligned with bars automatically
3. plot style histogram + hist_base (ver 2.0)
- you can plot long horizontal bars using a series of small vertical bars (horizontal histogram) instead of columns.
- you can control the width of each histogram bar comprising a level (spacing/horiz density). Large enough width will cause bar overlapping and give level a "solid" look regardless of zoom
- you can only set width <= 4 in UI Style - custom textbox input is provided for larger values. You can set width and plot transparency from input
- this method still uses hist_base and inherits other limitations of ver 2.0
4. plot style lines (ver 3.0)
- you can also plot long horizontal bars using lines with level offsets controlling visible length.
- lines don't need hist_base - fast and smooth redraw times
- you can calculate the highest/lowest range values automatically. max_level/min_level inputs are optional
- level top can't be properly aligned with another level's bottom and have a proper spacing because line width uses its own units and doesn't scale
- fixed line width of a level (vertical thickness) doesn't scale and looks bad on log (level overlapping)
- you can only set width <= 4 in UI Style, a custom textbox input is provided for larger values. You can set width and plot transparency from input
- hist_base for levels results in ugly load/redraw times - give it 3-5 sec to finalize its shape after each UI param change
- indicator is slow on TFs with long history 10000+ bars
- /Value Area are calculated for a given range and updated on each bar. Each level has a fixed width. Offsets control visible level parts. Side Cover hides the invisible parts.
- Custom Color for POC/VA/ levels - UI Style color/transparency can only change shape's color and doesn't affect textcolor, hence this additional option
- Custom Widh for levels - UI Style supports only width <= 4, hence this additional option
- POC is visible in both modes. In mode Developing POC becomes , VA High and Low => High and Low correspondingly to minimize the number of plot outputs
- You can't change buy/sell level colors (only plot transparency) - this requires 2x plot outputs exceeding max 64 limit. That's why 2 additional plots are used to dim the non Value Area zones
- Use Side by Side view to compare buy and sell volumes between each other: base width = max(total_buy_vol, total_sell_vol)
- All buy/sell lengths are calculated as % of a fixed base width = 100 bars (100%). You can't set show_last from input
- Sell Offset is calculated relative to Buy Offset to stack/extend sell on top of buy. Buy Offset = Zero - Buy Length. Sell Offset = Buy Offset - Sell Length = Zero - Buy Length - Sell Length
- If you see "loop too long error" - change some values in UI and it will recalculate - no need to refresh the chart
- There's no such thing as buy/sell , there's just , but for the purposes of the method, assume: bull candle = buy , bear candle = sell
- Range is limited to 5000 bars for free accounts
P.S. Cantaloupia Will be Free!
Links on and Value Area calculation and usage:
- style histogram implementation
- level width/density control and zero/cover offset micro adjustments for more solid looking levels
- empty range is now handled properly. VWAP, zero and cover are shown regardless of the range.
- source option for Volume Profile calculation
- swapped level_top with level in plot - seems more logical, doesn't affect redraw time
- density is the width of a single histogram bar forming a level. typically level/cover density should both be assigned the same value
- 12 is the optimal density for a solid looking levels on both large/small zoom scales, higher values require micro adjustment of zero/cover offset when zoomed out depending on scale
- level transparency is counter-acted by density. Higher density = less transparent levels given the same transparency
- you can now specify source for Volume Profile calculation i.e. use high/low instead of close if needed
ver 1.0: ver 2.0 ver 3.0
- style columns - style histogram - style line
- manual min/max level - manual min/max level - manual min/max level
- fixed 100% base width - fixed 100% base width - fixed 100% base width
- hist_base (ugly redraw) - hist_base (ugly redraw) - no hist_base (cleaner redraw)
- no level density (equalizer) - level density control (more solid) - line width control (outline from level center)
- level gaps auto fill - level gaps auto fill - manual level height adjustments for normal/log
- manual spacing - manual spacing - no spacing control, only width + compensation
- better transparency - less transparency (density is in the way) - better transparency
Changes in ver 3.0:
- style line implementation (no hist_base => cleaner redraw)
- width now controls the actual level/line width, while density only affects cover
- compensate level width and multiplier for log scale option
- level shift % of step h option to compensate for large level width
- extended cover option to compensate for large level width
- this is a more straightforward version with cleaner redraw, it doesn't use hist_base for levels, just lines
- downside: you can't fill the gaps between levels automatically, spacing doesn't work, width has its own units, you have to adjust it manually for each zoom/scale or leave huge gaps in between.
- you can have one level width for normal scale and another with a multiplier for a log scale
- you can shift levels vertically (middle of a step is default) and adjust zero/cover offsets to compensate for width outline
- level transparency now works again as expected since there's no density in the way
- assigning highest/lowest range values produces curves instead of straight lines as range changes dynamically - you still have to set max_level/min_level manually from input
Zgodnie z prawdziwym duchem TradingView, autor tego skryptu opublikował go jako open-source, aby traderzy mogli go zrozumieć i zweryfikować. Brawo dla autora! Możesz używać go za darmo, ale ponowne wykorzystanie tego kodu w publikacji jest regulowane przez Dobre Praktyki. Możesz go oznaczyć jako ulubione, aby użyć go na wykresie.
Informacje i publikacje przygotowane przez TradingView lub jego użytkowników, prezentowane na tej stronie, nie stanowią rekomendacji ani porad handlowych, inwestycyjnych i finansowych i nie powinny być w ten sposób traktowane ani wykorzystywane. Więcej informacji na ten temat znajdziesz w naszym Regulaminie.