where one is coming from meaning

• [American idiom]
  one's point of view. (Slang.)
  • I think I know what you mean. I know where you're coming from.
  • Man, you don't know where I’m coming from! You don’t understand a single word I say.
  
• 
  [American slang]
  one's point of view.
    I think I know what you mean. I know where you're coming from.
    Man, you don't know where I'm coming from! You don't understand a single word I say.

• know where one is coming from:    [American slang]to ...
• from where:    1. Whence2. From t ...
• from where i stand:    [American slang]Go ...

Examples

1. Where one is coming from tells us enough about where it leads to follow him.