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Hello,
I don't know if this is here (if not all my apologies) we can ask if someone knows how to create the GRaB indicator ?
I only have this base to help (from Marketscope):
-- Indicator profile initialization routine
-- Defines indicator profile properties and indicator parameters
-- TODO: Add minimal and maximal value of numeric parameters and default color of the streams
function Init()
indicator:name("Grab Candles");
indicator:description("Grab Candles");
indicator:requiredSource(core.Bar);
indicator:type(core.Indicator);
indicator.parameters:addGroup("MA");
indicator.parameters:addInteger("Period", "Period", "Period", 34);
indicator.parameters:addString("Method", "Method", "Method" , "MVA");
indicator.parameters:addStringAlternative("Method", "MVA", "MVA" , "MVA");
indicator.parameters:addStringAlternative("Method", "EMA", "EMA" , "EMA");
indicator.parameters:addStringAlternative("Method", "LWMA", "LWMA" , "LWMA");
indicator.parameters:addStringAlternative("Method", "TMA", "TMA" , "TMA");
indicator.parameters:addStringAlternative("Method", "SMMA", "SMMA" , "SMMA");
indicator.parameters:addStringAlternative("Method", "KAMA", "KAMA" , "KAMA");
indicator.parameters:addStringAlternative("Method", "WMA", "WMA" , "WMA");
indicator.parameters:addGroup("Style");
indicator.parameters:addBoolean("Show", "Show MA Lines", "", true);
indicator.parameters:addColor("Short_Up", "Color of Short Up", "", core.rgb(255, 0, 0));
indicator.parameters:addColor("Short_Down", "Color of Short Up", "", core.rgb(200, 0, 0));
indicator.parameters:addColor("Long_Up", "Color of Long Up", "", core.rgb(0, 255, 0));
indicator.parameters:addColor("Long_Down", "Color of Long Down", "", core.rgb(0, 200, 0));
indicator.parameters:addColor("Range_Up", "Color of Range Up", "", core.rgb(128, 128, 128));
indicator.parameters:addColor("Range_Down", "Color of Range Down", "", core.rgb(100, 100, 100));
end
-- Indicator instance initialization routine
-- Processes indicator parameters and creates output streams
-- TODO: Refine the first period calculation for each of the output streams.
-- TODO: Calculate all constants, create instances all subsequent indicators and load all required libraries
-- Parameters block
local Period;
local first;
local source = nil;
-- Streams block
local Open = nil;
local Close = nil;
local High = nil;
local Low = nil;
local Method;
local MA={};
local OUT={};
local Show;
-- Routine
function Prepare()
Period = instance.parameters.Period;
source = instance.source;
Show = instance.parameters.Show;
Method = instance.parameters.Method;
local name = profile:id() .. "(" .. source:name() .. ", " .. Method .. ", " .. Period .. ")";
instance:name(name);
MA["High"] = core.indicators:create(Method, source.high, Period);
MA["Low"] = core.indicators:create(Method, source.low, Period);
MA["Close"] = core.indicators:create(Method, source.close, Period);
first = MA["Low"].DATA:first();
Open = instance:addStream("O", core.Line, name .. ".Open", "Open", core.rgb(0, 0, 0), first);
Close = instance:addStream("C", core.Line, name .. ".Close", "Close", core.rgb(0, 0, 0), first);
High = instance:addStream("H", core.Line, name .. ".High", "High", core.rgb(0, 0, 0), first);
Low = instance:addStream("L", core.Line, name .. ".Low", "Low", core.rgb(0, 0, 0), first);
instance:createCandleGroup("ZONE", "", Open, High, Low, Close);
if Show then
OUT["High"] = instance:addStream("Open", core.Line, name .. ".Open", "Open", instance.parameters.Short_Up, first);
OUT["Low"] = instance:addStream("Close", core.Line, name .. ".Close", "Close", instance.parameters.Long_Up, first);
OUT["Close"] = instance:addStream("High", core.Line, name .. ".High", "High", instance.parameters.Range_Up, first);
else
OUT["High"] = instance:addInternalStream (0, 0);
OUT["Low"] = instance:addInternalStream (0, 0);
OUT["Close"] = instance:addInternalStream (0, 0);
end
end
-- Indicator calculation routine
-- TODO: Add your code for calculation output values
function Update(period,mode)
if period < first or not source:hasData(period) then
return;
end
MA["High"]:update(mode);
MA["Low"]:update(mode);
MA["Close"]:update(mode);
OUT["High"][period]= MA["High"].DATA[period];
OUT["Low"][period]= MA["Low"].DATA[period];
OUT["Close"][period]= MA["Close"].DATA[period];
Open[period] = source.open[period];
Close[period] = source.close[period];
High[period] = source.high[period];
Low[period] = source.low[period];
if source.open[period]<= source.close[period] and source.close[period] > MA["High"].DATA[period] then
Open:setColor(period, instance.parameters.Long_Up);
elseif source.open[period] >= source.close[period] and source.close[period] > MA["High"].DATA[period] then
Open:setColor(period, instance.parameters.Long_Down);
end
if source.open[period]<= source.close[period] and source.close[period] < MA["Low"].DATA[period] then
Open:setColor(period, instance.parameters.Short_Up);
elseif source.open[period] >= source.close[period] and source.close[period] < MA["Low"].DATA[period] then
Open:setColor(period, instance.parameters.Short_Down);
end
if source.open[period]<= source.close[period] and source.close[period] < MA["High"].DATA[period] and source.close[period] > MA["Low"].DATA[period] then
Open:setColor(period, instance.parameters.Range_Up);
elseif source.open[period] >=source.close[period] and source.close[period] < MA["High"].DATA[period] and source.close[period] > MA["Low"].DATA[period] then
Open:setColor(period, instance.parameters.Range_Down);
end
end
Thanks in advance for your answer.
Kind regards
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