function Init()
indicator:name("Squeeze Momentum Indicator");
indicator:description("");
indicator:requiredSource(core.Bar);
indicator:type(core.Oscillator);
indicator.parameters:addGroup("Calculation");
indicator.parameters:addInteger("lengthKC", "KC Length", "", 20, 2, 2000);
indicator.parameters:addGroup("Style");
indicator.parameters:addColor("Up", "Up Color", "", core.#00ff00);
indicator.parameters:addColor("Down", "Down Color", "", core.#ff0000);
indicator.parameters:addColor("Neutral", "Neutral Color", "", core.#808080);
end
-- Indicator instance initialization routine
-- Processes indicator parameters and creates output streams
-- Parameters block
local first;
local source = nil;
local MA, Average,Raw;
local Alert;
local close_local_up, local_ex_up;
local close_local_dn,local_ex_dn;
local val;
local lengthKC;
local Up,Down,Neutral;
-- Routine
function Prepare(nameOnly)
lengthKC= instance.parameters.lengthKC;
local name = profile:id() .. "(" .. instance.source:name() .. ", " .. lengthKC .. ")";
instance:name(name);
Up= instance.parameters.Up;
Down= instance.parameters.Down;
Neutral= instance.parameters.Neutral;
if (nameOnly) then
return;
end
close_local_up = instance:addInternalStream(0, 0);
local_ex_up = instance:addInternalStream(0, 0);
close_local_dn = instance:addInternalStream(0, 0);
local_ex_dn = instance:addInternalStream(0, 0);
val = instance:addInternalStream(0, 0);
MA= instance:addInternalStream(0, 0);
Average= instance:addInternalStream(0, 0);
Raw = instance:addInternalStream(0, 0);
source = instance.source;
first=source:first()+lengthKC;
Alert = instance:addStream("Alert" , core.Bar, " Alert"," Alert",instance.parameters.Neutral, first+lengthKC);
Alert:setPrecision(math.max(2, instance.source:getPrecision()));
end
-- Indicator calculation routine
function Update(period, mode)
if period < first then
return;
end
MA[period]= mathex.avg(source.close, period-lengthKC+1, period);
Average[period] = ((source.high[period]+source.low[period])/2 + MA[period])/2;
Raw[period]= source.close[period]-Average[period];
if period < first+lengthKC then
return;
end
val[period] =mathex.lreg ( Raw, period-lengthKC+1,period);
if(val[period]>0 and val[period]<val[period-1] and val[period-1]>val[period-2]) then
local_ex_up[period]= val[period]
else
local_ex_up[period]=local_ex_up[period-1]
end
if val[period]>0 and val[period]<val[period-1] and val[period-1]>val[period-2] then
close_local_up[period]=source.close[period]
else
close_local_up[period]=close_local_up[period-1]
end
if val[period]<0 and val[period]>val[period-1] and val[period-1]<val[period-2] then
local_ex_dn[period]=val[period]
else
local_ex_dn[period]=local_ex_dn[period-1]
end
if val[period]<0 and val[period]>val[period-1] and val[period-1]<val[period-2] then
close_local_dn[period]=source.close[period]
else
close_local_dn[period]=close_local_dn[period-1]
end
if (close_local_up[period]>close_local_up[period-1] and local_ex_up[period-1]>local_ex_up[period]) then
dn_sg=true;
else
dn_sg=false;
end
if (close_local_dn[period]>close_local_dn[period-1] and local_ex_dn[period-1]>local_ex_dn[period]) then
dn_sg_custom=true;
else
dn_sg_custom=false;
end
if (close_local_dn[period]<close_local_dn[period-1] and local_ex_dn[period-1]<local_ex_dn[period]) then
up_sg=true;
else
up_sg=false;
end
if (close_local_up[period]<close_local_up[period-1] and local_ex_up[period-1]<local_ex_up[period]) then
up_sg_custom=true;
else
up_sg_custom=false;
end
if dn_sg or dn_sg_custom or up_sg or up_sg_custom then
Alert[period]=1;
else
Alert[period]=0;
end
if( val[period] >val[period-1]) then
Alert:setColor(period, Up);
elseif( val[period] < val[period-1]) then
Alert:setColor(period, Down);
else
Alert:setColor(period, Neutral);
end
end
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