fxcodebase-backup

SAR Signal [Upd Oct, 18]

Source: https://fxcodebase.com/code/viewtopic.php?f=29&t=1045
Forum: 29 · Topic 1045 · 17 post(s)

SAR Signal [Upd Oct, 18]

Nikolay.Gekht · Mon May 17, 2010 4:00 pm

Oct, 18 update by NG. The signal is updated to support all new Marketscope features: a) recurrent sound b) parameters grouping c) email notifications

The simple signals which shows alert when the SAR indicator changes it’s direction.

Download:

SAR_signal_1.lua

Code: Select all `– Indicator profile initialization routine – Defines indicator profile properties and indicator parameters function Init() strategy:name(“Simple SAR signal”); strategy:description(“Signals when SAR changes the direction”);

strategy.parameters:addGroup(“SAR parameters”); strategy.parameters:addDouble(“Step”, “Step”, “”, 0.02, 0.001, 1); strategy.parameters:addDouble(“Max”, “Max”, “”, 0.2, 0.001, 10);

strategy.parameters:addGroup(“Price parameters”); strategy.parameters:addString(“Period”, “Time frame”, “”, “m1”); strategy.parameters:setFlag(“Period”, core.FLAG_PERIODS);

strategy.parameters:addGroup(“Signal parameters”); 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

– Indicator instance initialization routine – Processes indicator parameters and creates output streams – Parameters block local SAR; local gSource;

local SoundFile; local RecurrentSound; local Email; local ShowAlert; local name;

– Routine function Prepare(onlyName) local Step; local Max; local ExplosionPower;

Step = instance.parameters.Step; Max = instance.parameters.Max;

ShowAlert = instance.parameters.ShowAlert; if instance.parameters.PlaySound then SoundFile = instance.parameters.SoundFile; else SoundFile = nil; end

assert(not(PlaySound) or (PlaySound and SoundFile ~= “”), “Sound file must be specified”);

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”);

name = profile:id() .. “(“ .. instance.bid:instrument() .. “,” .. Step .. “,” .. Max .. “)”; instance:name(name);

if onlyName then return ; end

assert(instance.parameters.Period ~= “t1”, “Can’t be applied on ticks!”);

gSource = ExtSubscribe(1, nil, instance.parameters.Period, true, “bar”); SAR = core.indicators:create(“SAR”, gSource, Step, Max); end

function ExtUpdate(id, source, period) if id == 1 then SAR:update(core.UpdateLast); if period >= SAR.DATA:first() + 1 then local message = nil;

if not(SAR.DN:hasData(period - 1)) and SAR.DN:hasData(period) then message = “SAR switched down”; elseif not(SAR.UP:hasData(period - 1)) and SAR.UP:hasData(period) then message = “SAR switched up”; end

if message ~= nil then if ShowAlert then terminal:alertMessage(instance.bid:instrument(), instance.bid[NOW], message, instance.bid:date(NOW)); end

if SoundFile ~= nil then terminal:alertSound(SoundFile, RecurrentSound); end

if Email ~= nil then terminal:alertEmail(Email, name, name .. “(“ .. core.formatDate(instance.bid:date(NOW)) .. “) : “ .. message); end end end end end

dofile(core.app_path() .. “\strategies\standard\include\helper.lua”);`

Re: SAR Signal

maani1972 · Mon May 17, 2010 5:28 pm

Thanks

Re: SAR Signal

maani1972 · Mon May 17, 2010 7:04 pm

Hi,

Do I need to reset the sar signal after it produced an alert? because it doesn’t give me anymore alerts after the first one. is there a way to make it “fix” so I don’t need to reset it after an alert?

Thank you very much

Re: SAR Signal

Nikolay.Gekht · Mon May 17, 2010 9:16 pm

No, you don’t need to reset or restart anything.

Could you please tell me the instrument and timeframe you chosen. I tested it today for a couple of hours on 1 minute EUR/USD only.

Could you please also check whether any records appear on the log tab of the “events” window (except the record about the first SAR signal)?

p.s. Below it is how it looks on my TS:

However, I found how to simplify the signal a bit. I updated the code, it will consume a bit less of the processor time.

Re: SAR Signal

maani1972 · Tue May 18, 2010 4:04 pm

Hi,

Your right is does work well, sorry for that because at one point it didn’t but for today every thing worked fine. Thanks. I’m using it on the 15m chart. I look to your update. Thanks

Re: SAR Signal

wizardpro · Wed Oct 13, 2010 12:26 pm

Any update on the result? Do you think it work better with higher time frames such as 1 hours and above?

Re: SAR Signal

Nikolay.Gekht · Thu Oct 14, 2010 4:51 pm

Right now you can easily check it by yourself. Just install an autotrading patch and run the signal using “Test Strategy”.

BTW, there is a good article about SAR strategies on dailyfx.com: http://www.dailyfx.com/forex/technical/ … ategy.html

Re: SAR Signal notification/sound problem.

akc1991 · Mon Oct 18, 2010 6:31 pm

i downloaded the sar signal.lua, and I like what I see, but I what I do not see is a notification section(email) where I would like to have the signal emailed to me. Also I am not sure if its me, or the this particular file, but I have selected sound to notify me when a new trend is up or down, and it does not seem to work. Can anybody help me with this?

I would really appreciate anybody’s help.

alan

Re: SAR Signal

Nikolay.Gekht · Mon Oct 18, 2010 8:24 pm

When this signal was developed there is no such function as email notification in for the signals in Marketscope. I updated the signal in the first post of this topic. Please use the new version to get notifications.

Re: SAR Signal [Upd Oct, 18]

fxjunkie · Sat Nov 06, 2010 11:35 am

Awesome indicator. I’ve been bugging fxcm for months to get this one. So they can thank you for making this so I get off their back. lol. One request, any chance of getting it to work on the change of the sar instead of the close of the bar? I trade mostly on 5 or 15 min chart and find sometimes by the close of the bar I miss opportunities. Just a suggestion, either way I love the indicator, ty

Re: SAR Signal [Upd Oct, 18]

Nikolay.Gekht · Sun Nov 07, 2010 7:28 pm

Yes, it can be done. Please give me a couple of days to finish all urgent things and I’ll do it.

Re: SAR Signal [Upd Oct, 18]

fxjunkie · Fri Nov 12, 2010 9:29 am

Awesome Nikolay. Very much appreciated. Best of luck trading. Good things will come to people like you

Re: SAR Signal [Upd Oct, 18]

subliminal · Mon Nov 21, 2011 7:42 am

fxjunkie wrote: Awesome indicator. I’ve been bugging fxcm for months to get this one. So they can thank you for making this so I get off their back. lol. One request, any chance of getting it to work on the change of the sar instead of the close of the bar? I trade mostly on 5 or 15 min chart and find sometimes by the close of the bar I miss opportunities. Just a suggestion, either way I love the indicator, ty

I second this request as I also scalp on those timeframes and experience the same missed opportunities. Great signal by the way!

Re: SAR Signal [Upd Oct, 18]

subliminal · Tue Nov 22, 2011 7:32 am

I managed to get it to work briefly by manipulating a few values but I never got it to work consistently. Probably because when the dots change, the candle where it changes has entries for both directions (green and red dots simutaneously) before the next candle completes the change.

As you can see the first picture is in realtime where I’ve observed how the sar changes and the second picture is when I’ve removed the chart and reattached it fresh to marketscope where there are no longer any conflicting sar entries.

Basically for the signal to alert the user as soon as the direction changes, it needs to signal when the candle has both entries (green and red). The current signal waits for the candle which completes the change in direction (2nd candle) but in reality that is the second red or green dot instead of the first.

Could someone please give me an idea on how to reflect that in the code below?

Code: Select all `function ExtUpdate(id, source, period) if id == 1 then SAR:update(core.UpdateLast); if period >= SAR.DATA:first() + 1 then local message = nil;

Thank you!

Re: SAR Signal [Upd Oct, 18]

Apprentice · Tue Nov 22, 2011 5:56 pm

Can you post the entire code for this strategy.

Re: SAR Signal [Upd Oct, 18]

subliminal · Wed Nov 23, 2011 11:55 am

Apprentice wrote: Can you post the entire code for this strategy.

This is the default code