short explanation about 'wedge pattern' indicator.

short explanation about wedge pattern indicator.(I'm not good at English, but I'll write this.) 

Explain about the logic ,step by step:

1. plot the high & low point , trend line 
2. the points inside 0.5 Standard deviation ignore. [fig 1]
3. calculation of the distance between  trend line and points . then ranking these. [fig 2]
4. at the 1st point ,calculating slope from each points. and  calculating deviation of slope angle.
5. the slope angle outside 1.2  Standard deviation ignore. 
6. choose the most outside line from those remaining. [fig 3]
7. if not found does calculation at 2nd points

 
[fig 1]
 

 
[fig 2]

 
[fig 3]

 Thanks for reading.