Three Indians 

Detection of a pattern “three Indians” on the basis of the ZigZag.

There are two basic methods:

Trade on a trend – less risky method when a pattern crowns with itself the termination of correction of already developed trend, and gives a signal to its continuation:

Trade on a turn, more risky method when a global change of the tendency is supposed, in this case waves of the patern should be more significant on the size in relation to a trend or its last wave:

Options:
The beginnings and the middle of lines are located on 1st and 2nd prospective Indians accordingly.

extern int ExtDepth=10;//zigzag options

extern int ExtDeviation=5;

extern int ExtBackstep=3;

extern double K_MinWave=0.6;//the minimum size of a wave from 1st Indian in relation to a wave of 2nd, to filter small waves

extern int Depth=3;///depth of search of 1 Indian, accounting the filter, but is no more 10!

And further history, colours and a thickness of lines…