индикатор: канал на последнем зигзаге

Procent - величина зигзага в %
  k - коэффизиент ширины канала
  Ext - =0-канал стоится по средним =1-канал стоится по экстремуму

--[[
индикатор: 
канал на последнем зигзаге
индикатор строит канал по зигзагу, показывает слом тренда при выходе цены за границы канала
параметры:
  Procent - величина зигзага в %
  k - коэффизиент ширины канала
  Ext - =0-канал стоится по средним =1-канал стоится по экстремуму
--]]
Settings=              
        {                          
            Name = "Zigzag_channel",   -- название индикатора
            Procent=5,               -- величина зигзага в % 
            k=2,			         -- коэффизиент ширины канала
            Ext=1, -- =0-канал стоится по средним =1-канал стоится по экстремуму			
            line=                                     
                {                               
                    {  
                        Name = "zigzagline",
                        Type =TYPE_LINE,
                        Width = 1,
                        Color = RGB(120,90, 140)
                    },
					{  
                        Name = "cur1",
                        Type =TYPE_LINE,
                        Width = 1,
                        Color = RGB(0,0, 0)
                    },
					{  
                        Name = "cur2",
                        Type =TYPE_LINE,
                        Width = 2,
                        Color = RGB(0,0, 255)
                    },
					{  
                        Name = "cur3",
                        Type =TYPE_LINE,
                        Width = 2,
                        Color = RGB(255,0, 0)
                    },
					{  
                        Name = "cur4",
                        Type =TYPE_LINE,
                        Width = 1,
                        Color = RGB(0,0, 0)
                    },
					{  
                        Name = "cur5",
                        Type =TYPE_LINE,
                        Width = 2,
                        Color = RGB(0,0, 255)
                    },
					{  
                        Name = "cur6",
                        Type =TYPE_LINE,
                        Width = 2,
                        Color = RGB(255,0, 0)
                    }
                }
       }


function Init()

  y1 = nil
  y2 = nil
  x1 = 1
  x2 = 1
  x3 = 1

  return 7
end


function OnCalculate(index)
  
  de = Settings.Procent
  kk = Settings.k 
  ex = Settings.Ext

  vl = C(index)
  if index == 1 then 
	y1 = vl
    y2 = vl
  else   
	  if C(index) > y1*(1+de/100) and y1 < y2 then 
	    x3 = x2
	    x2 = x1
	    y2 = y1	
	    x1 = index 
	    y1 = C(index)	        
	  end 	
	  if C(index) > y1 and C(index) > y2 then 
	    x1 = index 
	    y1 = C(index)	  			  
	  end 
	  	  		
	  if C(index) < y1*(1-de/100) and y1 > y2 then 
	    x3 = x2
	    x2 = x1
	    y2 = y1
	    x1 = index 
	    y1 = C(index)	  		
	  end 	
	  if C(index) < y1 and C(index) < y2 then 
	    x1 = index 
	    y1 = C(index)	  			  
	  end 	  	  		
	end 	
  
  if x1 ~= index then 
    curfrom = x1
	curto = index
  else 
    curfrom = x2
	curto = x1
  end 
 
  if curto ~= curfrom and curfrom ~= nil and curto ~= nil then 
    if C(curto) ~= nil and C(curfrom) ~= nil then 
      k = (C(curto)- C(curfrom))/(curto- curfrom)  
      for i = curfrom, index  do
        curv = i*k + C(curto) - curto*k  		          
	    --SetValue(i, 1, curv)
      end   	
	end 
  end 
  

    --[[	--]]
 
	
	if index == Size() then
	
	
	  --[[ 111111111111111 --]]  
	  vFrom = 0
	  vTo = 0
	  if x3 < x2 then 
	    vFrom = x3
	    vTo = x2
	  else
	    vFrom = x2
	    vTo = x3
	  end 
	
	  a1 = 0
	  a2 = 0
	  a3 = 0
	  a4 = 0
	  n = 0
	  a = 0
	  b = 0
      for i = vFrom, vTo do
        n=n+1	  
	    a1 = a1+i*C(i)
	    a2 = a2+i
	    a3 = a3+C(i)
	    a4 = a4+i*i	
	  end
	  if((n*a4 - a2*a2) ~= 0) then	  
	   a = (n*a1 - a2*a3)/(n*a4 - a2*a2)
	   b = (a3 - a*a2)/n

	   vminus = 0
	   vplus = 0
	   vminus_n = 0
	   vplus_n = 0
       for i = vFrom, index do
        y = a*i + b		
		if C(i) < y and i <= vTo then
		  if ex == 0 then 
	        vminus = vminus + y - C(i)
            vminus_n = vminus_n + 1	
		  else 
		    if i == vFrom then 
			  vminus = 0
			end
            if y-C(i) > vminus then
              vminus = y-C(i) 			
            end				
		  end 
        end		  
		if C(i) > y and i <= vTo then
		  if ex == 0 then 
	        vplus = vplus + C(i) - y
	        vplus_n = vplus_n + 1
		  else 
		    if i == vFrom then 
			  vplus = 0
			end		  
            if C(i)-y > vplus then
              vplus = C(i)-y 			
            end			
		  end 
		end 
        m = 0
        if C(vTo) >	C(vFrom) and y < C(vTo)+0.1*(C(vTo)-C(vFrom)) and y > C(vFrom)-0.1*(C(vTo)-C(vFrom)) then
          m = 1
		end 	
        if C(vTo) <	C(vFrom) and y < C(vFrom)+0.1*(C(vFrom)-C(vTo)) and y > C(vTo)-0.1*(C(vFrom)-C(vTo)) then
          m = 1
		end 
        if m == 1 then 		
	      --SetValue(i, 2, y)
        end 		
	   end
	  
	   if ex == 0 then  
	    if vminus_n ~= 0 then
	     vminus = kk*vminus/vminus_n          
	    end 
	    if vplus_n ~= 0 then
	     vplus = kk*vplus/vplus_n          
	    end 
	   end 	
	  
       for i = vFrom, index do
        y = a*i + b + vplus		
        m = 0
        if C(vTo) >	C(vFrom) and y < C(vTo)+0.1*(C(vTo)-C(vFrom)) and y > C(vFrom)-0.1*(C(vTo)-C(vFrom)) then
          m = 1
		end 	
        if C(vTo) <	C(vFrom) and y < C(vFrom)+0.1*(C(vFrom)-C(vTo)) and y > C(vTo)-0.1*(C(vFrom)-C(vTo)) then
          m = 1
		end 
        if m == 1 then 		
	      SetValue(i, 3, y)
        end 	
		
        y = a*i + b - vminus		
        m = 0
        if C(vTo) >	C(vFrom) and y < C(vTo)+0.1*(C(vTo)-C(vFrom)) and y > C(vFrom)-0.1*(C(vTo)-C(vFrom)) then
          m = 1
		end 	
        if C(vTo) <	C(vFrom) and y < C(vFrom)+0.1*(C(vFrom)-C(vTo)) and y > C(vTo)-0.1*(C(vFrom)-C(vTo)) then
          m = 1
		end 
        if m == 1 then 		
	      SetValue(i, 4, y)
        end 			
	   end	  
	  end 	  
	  
	  --[[ 2222222222222 --]]  
	  
	  vFrom = 0
	  vTo = 0
	  if x1 < x2 then 
	    vFrom = x1
	    vTo = x2
	  else
	    vFrom = x2
	    vTo = x1
	  end 
	
	  a1 = 0
	  a2 = 0
	  a3 = 0
	  a4 = 0
	  n = 0
	  a = 0
	  b = 0
      for i = vFrom, vTo do
        n=n+1	  
	    a1 = a1+i*C(i)
	    a2 = a2+i
	    a3 = a3+C(i)
	    a4 = a4+i*i	
	  end
	  if((n*a4 - a2*a2) ~= 0) then	  
	   a = (n*a1 - a2*a3)/(n*a4 - a2*a2)
	   b = (a3 - a*a2)/n

	   vminus = 0
	   vplus = 0
	   vminus_n = 0
	   vplus_n = 0
       for i = vFrom, index do
        y = a*i + b		
		if C(i) < y and i <= vTo then
		  if ex == 0 then 
	        vminus = vminus + y - C(i)
            vminus_n = vminus_n + 1	
		  else 
		    if i == vFrom then 
			  vminus = 0
			end
            if y-C(i) > vminus then
              vminus = y-C(i) 			
            end				
		  end 
        end		  
		if C(i) > y and i <= vTo then
		  if ex == 0 then 
	        vplus = vplus + C(i) - y
	        vplus_n = vplus_n + 1
		  else 
		    if i == vFrom then 
			  vplus = 0
			end		  
            if C(i)-y > vplus then
              vplus = C(i)-y 			
            end			
		  end 
		end  
        m = 0
        if C(vTo) >	C(vFrom) and y < C(vTo)+0.1*(C(vTo)-C(vFrom)) and y > C(vFrom)-0.1*(C(vTo)-C(vFrom)) then
          m = 1
		end 	
        if C(vTo) <	C(vFrom) and y < C(vFrom)+0.1*(C(vFrom)-C(vTo)) and y > C(vTo)-0.1*(C(vFrom)-C(vTo)) then
          m = 1
		end 
        if m == 1 then 		
	      --SetValue(i, 5, y)
        end 
	   end
	  
	   if ex == 0 then 
	    if vminus_n ~= 0 then
	     vminus = kk*vminus/vminus_n          
	    end 
	    if vplus_n ~= 0 then
	     vplus = kk*vplus/vplus_n          
	    end
       end 		
	  
       for i = vFrom, index do
        y = a*i + b + vplus		
        m = 0
        if C(vTo) >	C(vFrom) and y < C(vTo)+0.1*(C(vTo)-C(vFrom)) and y > C(vFrom)-0.1*(C(vTo)-C(vFrom)) then
          m = 1
		end 	
        if C(vTo) <	C(vFrom) and y < C(vFrom)+0.1*(C(vFrom)-C(vTo)) and y > C(vTo)-0.1*(C(vFrom)-C(vTo)) then
          m = 1
		end 
        if m == 1 then 		
	      SetValue(i, 6, y)
        end 	
		
        y = a*i + b - vminus		
        m = 0
        if C(vTo) >	C(vFrom) and y < C(vTo)+0.1*(C(vTo)-C(vFrom)) and y > C(vFrom)-0.1*(C(vTo)-C(vFrom)) then
          m = 1
		end 	
        if C(vTo) <	C(vFrom) and y < C(vFrom)+0.1*(C(vFrom)-C(vTo)) and y > C(vTo)-0.1*(C(vFrom)-C(vTo)) then
          m = 1
		end 
        if m == 1 then 		
	      SetValue(i, 7, y)
        end 			
	   end	  
	  end 	  
	  	  
	  
	end 

 
  return nil--vl 

end