fxcodebase-backup
“Gator” Oscillator (closed topic)
Source: https://fxcodebase.com/code/viewtopic.php?f=17&t=27
Forum: 17 · Topic 27 · 4 post(s)
“Gator” Oscillator (closed topic)
admin · Fri Oct 23, 2009 4:25 pm
Note: This version is OLD version of the indicator. To get the new version please follow this link: viewtopic.php?f=17&t=1975.
Gator Oscillator is based on the Alligator Indicator and shows the degree of convergence/divergence of the Smoothed Moving Averages. Gator oscillator is usually used in combination with “Alligator” indicator. (As you can see on the screenshot)
Gator displays 2 history graphs:
- Top Graph: Shows the distance between Blue and Red lines of the “Alligator”. (Jaws <-> Teeth)
- Bottom Graph: Shows the distance between Red and Green lines of the “Alligator”. (Teeth <-> Lips)
“Gator” shows convergence and intertwining of the Lines when “Alligator” indicator is “asleep” or “awake” and can help you identify a trend.
Calculation: Top Graph = | Alligator Jaw – Alligator Teeth | Bottom Graph = - | Alligator Teeth – Alligator Lips | (*|| means the absolute value.)
Gator Screenshot. (Note that “Gator” is the oscillator below. Over the chart lines is the Alligator Indicator, with which “Gator” is usually used.)
Tags: Gator, indicator, Marketscope, oscillator, Trading Station, FXCM, dbFX
The indicator was revised and updated
“Gator” Oscillator based on SMMA and Median price
Nikolay.Gekht · Tue Dec 22, 2009 3:43 pm
As for the alligator indicator, the gator oscillator can be also calculated using smma average and median price.
Here is the modified version of the gator oscillator:
Source code:
-- initializes the indicator
function Init()
indicator:name("Gator1");
indicator:description("Median and SMMA-based version of the gator")
indicator:requiredSource(core.Bar);
indicator:type(core.Oscillator);
indicator.parameters:addInteger("JawN", "Number of periods for smoothing the alligator jaw", "", 13, 2, 1000);
indicator.parameters:addInteger("JawS", "Number of periods for shifting the alligator jaw", "", 8, 1, 100);
indicator.parameters:addInteger("TeethN", "Number of periods for smoothing the alligator teeth", "", 8, 2, 1000);
indicator.parameters:addInteger("TeethS", "Number of periods for shifting the alligator teeth", "", 5, 1, 100);
indicator.parameters:addInteger("LipsN", "Number of periods for smoothing the alligator lips", "", 5, 2, 1000);
indicator.parameters:addInteger("LipsS", "Number of periods for shifting the alligator lips", "", 3, 1, 100);
indicator.parameters:addString("MTH", "Smoothing method", "", "SMMA");
indicator.parameters:addStringAlternative("MTH", "MVA", "", "MVA");
indicator.parameters:addStringAlternative("MTH", "EMA", "", "EMA");
indicator.parameters:addStringAlternative("MTH", "LWMA", "", "LWMA");
indicator.parameters:addStringAlternative("MTH", "SMMA", "", "SMMA");
indicator.parameters:addColor("CL_color", "Color for covering line", "Color for covering line", core.rgb(255, 255, 255));
indicator.parameters:addColor("GO_color", "Color for higher bars", "Color for higher bars", core.rgb(0, 255, 0));
indicator.parameters:addColor("RO_color", "Color for lower bars", "Color for lower bars", core.rgb(255, 0, 0));
end
-- lines parameters
local JawN, JawS;
local TeethN, TeethS;
local LipsN, LipsC;
-- indicator source
local source;
local median;
-- alligator lines
local Jaw, Teeth, Lips;
-- alligator lines sources
local JawSrc, TeethSrc, LipsSrc;
-- gator bars
local Up, Down, UpRed, UpGreen, DownRed, DownGreen;
-- bar's parameters
local UpExtent, DownExtent;
local UpFirst, DownFirst;
-- process parameters and prepare for calculations
function Prepare()
JawN = instance.parameters.JawN;
JawS = instance.parameters.JawS;
TeethN = instance.parameters.TeethN;
TeethS = instance.parameters.TeethS;
LipsN = instance.parameters.LipsN;
LipsS = instance.parameters.LipsS;
source = instance.source;
median = instance:addInternalStream(source:first(), 0);
JawSrc = core.indicators:create(instance.parameters.MTH, median, JawN, core.rgb(0, 0, 0));
TeethSrc = core.indicators:create(instance.parameters.MTH, median, TeethN, core.rgb(0, 0, 0));
LipsSrc = core.indicators:create(instance.parameters.MTH, median, LipsN, core.rgb(0, 0, 0));
local name = profile:id() .. "(" .. source:name() .. ", " .. JawN .. "(" .. JawS .. ")," .. TeethN .. "(" .. TeethS .. ")," .. LipsN .. "(" .. LipsS .. "))";
instance:name(name);
Jaw = instance:addInternalStream(JawSrc.DATA:first() + JawS, JawS);
Teeth = instance:addInternalStream(TeethSrc.DATA:first() + TeethS, TeethS);
Lips = instance:addInternalStream(LipsSrc.DATA:first() + LipsS, LipsS);
UpExtent = math.min(JawS, TeethS);
UpFirst = math.max(Jaw:first(), Teeth:first());
Up = instance:addStream("UP", core.Line, name .. ".UP", "UP", instance.parameters.CL_color, UpFirst, UpExtent);
Up:addLevel(0);
UpRed = instance:addStream("UPR", core.Bar, name .. ".UPR", "UPR", instance.parameters.RO_color, UpFirst, UpExtent);
UpGreen = instance:addStream("UPG", core.Bar, name .. ".UPG", "UPG", instance.parameters.GO_color, UpFirst, UpExtent);
DownExtent = math.min(TeethS, LipsS);
DownFirst = math.max(Teeth:first(), Lips:first());
Down = instance:addStream("DOWN", core.Line, name .. ".DN", "DN", instance.parameters.CL_color, DownFirst, DownExtent);
DownRed = instance:addStream("DNR", core.Bar, name .. ".DNR", "DNR", instance.parameters.RO_color, DownFirst, DownExtent);
DownGreen = instance:addStream("DNG", core.Bar, name .. ".DNG", "DNG", instance.parameters.GO_color, DownFirst, DownExtent);
end
-- Indicator calculation routine
function Update(period, mode)
-- calculate alligator
median[period] = (source.high[period] + source.low[period]) / 2;
JawSrc:update(mode);
TeethSrc:update(mode);
LipsSrc:update(mode);
if (period + JawS >= 0 and period >= JawSrc.DATA:first()) then
Jaw[period + JawS] = JawSrc.DATA[period];
end
if (period + TeethS >= 0 and period >= TeethSrc.DATA:first()) then
Teeth[period + TeethS] = TeethSrc.DATA[period];
end
if (period + LipsS >= 0 and period >= LipsSrc.DATA:first()) then
Lips[period + LipsS] = LipsSrc.DATA[period];
end
-- calculate gator
if period >= UpFirst then
Up[period + UpExtent] = math.abs(Jaw[period + UpExtent] - Teeth[period + UpExtent]);
if period >= UpFirst + 1 then
if Up[period + UpExtent] >= Up[period + UpExtent - 1] then
UpGreen[period + UpExtent] = Up[period + UpExtent];
else
UpRed[period + UpExtent] = Up[period + UpExtent];
end
end
end
if period >= DownFirst then
Down[period + DownExtent] = -math.abs(Teeth[period + DownExtent] - Lips[period + DownExtent]);
if period >= DownFirst + 1 then
if Down[period + DownExtent] >= Down[period + DownExtent - 1] then
DownGreen[period + DownExtent] = Down[period + DownExtent];
else
DownRed[period + DownExtent] = Down[period + DownExtent];
end
end
end
end
Re: “Gator” Oscillator
boursicoton · Tue Aug 10, 2010 3:20 pm
color on gator….. not simply !
but if on gator histo < 0, down = green et up = red….waouh…! because mouvement is synchro with histo gator >0 gator explain the difference between alligator lines if divergence : green for two histos if convergence : red… do you understand my bad english and poor french !
Re: “Gator” Oscillator (closed topic)
Apprentice · Mon Jan 16, 2017 6:45 am
Indicator was revised and updated.