How to draw this on chart ??

[lekhoa1234567890]

How to draw gann angle 45 degree on chart like this? could you show me code to draw it, please. thank you so much.

[Tomasz]

The concept of "angle" on time-price charts is just an illusion, see:

Need Help Gann Line

You need to understand that there is no single "angle" that can be determined in anisotropic charts, i.e. ones that X axis scale has different units than Y axis. In price chart X axis scale is TIME where Y axis scale is PRICE (dollars). There is no fixed mathematical relation between time and dollars, therefore there is no angle. All charts use dynamic scale, and that means that relation between X and Y is dynamic and arbitrary based on price movement, zoom factor, display area size, etc. T…