Market sessions and Volume profile - By Leviathan

This script allows you to keep track of Forex market sessions (Tokyo, London and New York), as well as Daily, Weekly and Monthly sessions. All of them are accompanied by Volume Profile options where you can view VP Histogram, Point of Control, Value Area High and Value Area Low.
Colors, lines and other design preferences are fully customizable.

* Volume Profile of shorter sessions (eg. Tokyo, London, New York) works better when using lower timeframes such as 15min, 5min, etc.
** Use timeframe higher than 15min when viewing Monthly sessions

Indicator settings overview:

SESSION TYPE
- Tokyo session (1:00 - 9:00 UTC/ GMT )
- London session (7:00 - 16:00 UTC/ GMT )
- New York session (13:00 - 22:00 UTC/ GMT )
- Daily session
- Weekly session
- Monthly session

DISPLAY
- Show Volume Profile (Show or hide Volume Profile histogram)
- Show POC (Show or hide Point Of Control line)
- Show VAL (Show or hide Value Area Low line)
- Show VAH (Show or hide Value Area High line)
- Show Live Zone (Show or hide the ongoing session)

VOLUME PROFILE SETTINGS
- Resolution (The higher the value, the more refined of a profile, but less profiles are shown on the chart)
- Smooth Volume Data (Useful for assets that have very large spikes in volume over large bars, helps create better profiles)

APPEARANCE
- Up Volume color (Pick a custom color for up/ bullish volume profile nodes)
- Down Volume color (Pick a custom color for down/ bearish volume profile nodes)
- POC color and thickness (Pick a custom color and thickness for Point Of Control line)
- VAH color and thickness (Pick a custom color and thickness for Value Area High line)
- VAL color and thickness (Pick a custom color and thickness for Value Area Low line)
- Session box thickness (Pick a custom thickness for the session box. Color is provided automatically with optimal contrast)

** Some VP elements are inspired by @LonesomeTheBlue's volume profile script

Notes de version:

Fixed to comply with General House Rules

Notes de version:

- Volume Area percentage size can now be customized (default is 70%)
- Session labels can be shown for each session

Notes de version:

Added an option to show Value Area as a box

Notes de version:

- Added Quarterly sessions (use timeframes of 4h and above when viewing)
- Added Yearly sessions (use timeframes of 4h and above when viewing)
- Added an option to use Open Interest as source for profile generation
- Added 3 modes for displaying profiles
- Added an option to show Tokyo, London, New York sessions at the same time (without profiles)
- Added an option to change Value Area Box style

Notes de version:

- Added an option "Show Session Box" to show/hide the session box
- Weekly start date fix