Source: https://fxcodebase.com/code/viewtopic.php?f=29&t=2358
Forum: 29 · Topic 2358 · 2 post(s)
Alexander.Gettinger · Thu Oct 07, 2010 3:34 pm
If price touches the top channel signal advises SELL, If price touches the bottom channel signal advises BUY. Strategy can work with direct or reverse signals.

Code: Select all `function Init() strategy:name(“SHI Channel Signal”); strategy:description(“SHI Channel Signal”);
strategy.parameters:addGroup(“SHI Channel Parameters”); strategy.parameters:addInteger(“BarsForFractal”, “Bars for fractal”, “”, 3);
strategy.parameters:addGroup(“Price Parameters”); strategy.parameters:addString(“TF”, “Time Frame”, “”, “m15”); strategy.parameters:setFlag(“TF”, core.FLAG_PERIODS);
strategy.parameters:addGroup(“Signal Parameters”); strategy.parameters:addString(“TypeSignal”, “Type of signal”, “”, “direct”); strategy.parameters:addStringAlternative(“TypeSignal”, “direct”, “”, “direct”); strategy.parameters:addStringAlternative(“TypeSignal”, “reverse”, “”, “reverse”); strategy.parameters:addBoolean(“ShowAlert”, “Show Alert”, “”, true); strategy.parameters:addBoolean(“PlaySound”, “Play Sound”, “”, false); strategy.parameters:addFile(“SoundFile”, “Sound File”, “”, “”); strategy.parameters:setFlag(“SoundFile”, core.FLAG_SOUND); strategy.parameters:addBoolean(“Recurrent”, “RecurrentSound”, “”, false); strategy.parameters:addGroup(“Email Parameters”); strategy.parameters:addBoolean(“SendEmail”, “Send email”, “”, false); strategy.parameters:addString(“Email”, “Email address”, “”, “”); strategy.parameters:setFlag(“Email”, core.FLAG_EMAIL); end
local ShowAlert; local SoundFile; local Email; local RecurrentSound;
function Prepare() RecurrentSound= instance.parameters.Recurrent; local SendEmail = instance.parameters.SendEmail; if SendEmail then Email = instance.parameters.Email; else Email = nil; end assert(not(SendEmail) or (SendEmail and Email ~= “”), “Email address must be specified”);
assert(instance.parameters.TF ~= “t1”, “The time frame must not be tick”); assert(not(instance.parameters.PlaySound) or (instance.parameters.PlaySound and instance.parameters.SoundFile ~= “”), “Sound file must be chosen”); assert(core.indicators:findIndicator(“SHI_CHANNEL”) ~= nil, “Please download and install SHI Channel Indicator!”);
local name; name = profile:id() .. “(“ .. instance.bid:name() .. “.” .. instance.parameters.TF .. “)”; instance:name(name);
ShowAlert = instance.parameters.ShowAlert; if instance.parameters.PlaySound then SoundFile = instance.parameters.SoundFile; else SoundFile = nil; end
ExtSubscribe(1, nil, “t1”, true, “close”); end
local first = true; local tsource = nil; local indicator = nil; local Flag=nil;
function ExtUpdate(id, source, period) if id == 1 and first then first = false; tsource = ExtSubscribe(2, nil, instance.parameters.TF, true, “bar”); local iprofile = core.indicators:findIndicator(“SHI_CHANNEL”); local iparams = iprofile:parameters(); iparams:setInteger(“BarsForFractal”, instance.parameters:getInteger(“BarsForFractal”)); indicator = iprofile:createInstance(tsource, iparams); elseif id == 2 and period > 1 then indicator:update(core.UpdateLast); – check whether the signal appears if indicator.Buff1:hasData(period - 1) and indicator.Buff1:hasData(period) and indicator.Buff2:hasData(period - 1) and indicator.Buff2:hasData(period) then local MinPr=math.min(indicator.Buff1[period],indicator.Buff2[period]); local MaxPr=math.max(indicator.Buff1[period],indicator.Buff2[period]); local MinPr1=math.min(indicator.Buff1[period-1],indicator.Buff2[period-1]); local MaxPr1=math.max(indicator.Buff1[period-1],indicator.Buff2[period-1]); if instance.parameters:getString(“TypeSignal”)==”direct” then if tsource.close[period-1]<MaxPr1 and instance.bid[NOW]>=MaxPr and Flag~=”Short” then Flag=”Short”; – switch to short if ShowAlert then terminal:alertMessage(instance.bid:instrument(), instance.bid[NOW], “Enter Short”, instance.bid:date(NOW)); end
if SoundFile ~= nil then terminal:alertSound(SoundFile, RecurrentSound); end if Email ~= nil then terminal:alertEmail (Email, “Enter Short”, “SHI Channel Indicator have give Enter Short signal”) end end if tsource.close[period-1]>MinPr1 and instance.bid[NOW]<=MinPr and Flag~=”Long” then Flag=”Long”; – switch to long if ShowAlert then terminal:alertMessage(instance.bid:instrument(), instance.bid[NOW], “Enter Long”, instance.bid:date(NOW)); end if SoundFile ~= nil then terminal:alertSound(SoundFile, RecurrentSound); end if Email ~= nil then terminal:alertEmail (Email, “Enter Long”, “SHI Channel Indicator have give Enter Long signal”) end end else if tsource.close[period-1]<MaxPr1 and instance.bid[NOW]>=MaxPr and Flag~=”Long” then Flag=”Long”; – switch to long if ShowAlert then terminal:alertMessage(instance.bid:instrument(), instance.bid[NOW], “Enter Long”, instance.bid:date(NOW)); end
if SoundFile ~= nil then terminal:alertSound(SoundFile, RecurrentSound); end if Email ~= nil then terminal:alertEmail (Email, “Enter Long”, “SHI Channel Indicator have give Enter Long signal”) end end if tsource.close[period-1]>MinPr1 and instance.bid[NOW]<=MinPr and Flag~=”Short” then Flag=”Short”; – switch to short if ShowAlert then terminal:alertMessage(instance.bid:instrument(), instance.bid[NOW], “Enter Short”, instance.bid:date(NOW)); end if SoundFile ~= nil then terminal:alertSound(SoundFile, RecurrentSound); end if Email ~= nil then terminal:alertEmail (Email, “Enter Short”, “SHI Channel Indicator have give Enter Short signal”) end end end end end end
dofile(core.app_path() .. “\strategies\standard\include\helper.lua”);`
Alexander.Gettinger · Thu Oct 07, 2010 3:53 pm
Indicator SHI_Channel (viewtopic.php?f=17&t=2305&p=4896) must be installed.