-- Id: 17900 --+------------------------------------------------------------------+ --| Copyright © 2018, Gehtsoft USA LLC | --| http://fxcodebase.com | --+------------------------------------------------------------------+ --| Developed by : Mario Jemic | --| mario.jemic@gmail.com | --+------------------------------------------------------------------+ --| Support our efforts by donating | --| Paypal: https://goo.gl/9Rj74e | --+------------------------------------------------------------------+ --| Patreon : https://goo.gl/GdXWeN | --| BitCoin : 15VCJTLaz12Amr7adHSBtL9v8XomURo9RF | --| BitCoin Cash: 1BEtS465S3Su438Kc58h2sqvVvHK9Mijtg | --| Ethereum : 0x8C110cD61538fb6d7A2B47858F0c0AaBd663068D | --| LiteCoin : LLU8PSY2vsq7B9kRELLZQcKf5nJQrdeqwD | --+------------------------------------------------------------------+ -- Available @ http://fxcodebase.com/code/viewtopic.php?f=17&t=64558 -- 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("Stochastic Min Max") indicator:description("Shows the location of the high/low price achieved between two Stochastic crosses") indicator:requiredSource(core.Bar) indicator:type(core.Indicator) indicator.parameters:addGroup("Calculation") indicator.parameters:addInteger("K", "Number of periods for %K", "", 25, 2, 1000) indicator.parameters:addInteger("SD", "%D slowing periods", "", 25, 2, 1000) indicator.parameters:addInteger("D", "The number of periods for %D.", "", 25, 2, 1000) indicator.parameters:addString("KS", "Smoothing type for %K", "", "MVA") indicator.parameters:addStringAlternative("KS", "MVA", "", "MVA") indicator.parameters:addStringAlternative("KS", "EMA", "", "EMA") indicator.parameters:addStringAlternative("KS", "FS", "", "FS") indicator.parameters:addString("DS", "Smoothing type for %D", "", "MVA") indicator.parameters:addStringAlternative("DS", "MVA", "", "MVA") indicator.parameters:addStringAlternative("DS", "EMA", "", "EMA") indicator.parameters:addBoolean("TrendFilter", "Use Trend Filter", "", true) indicator.parameters:addGroup("Style") indicator.parameters:addColor("Up", "Period Max Color", "", core.rgb(0, 255, 0)) indicator.parameters:addColor("Down", "Period Min Color", "", core.rgb(255, 0, 0)) indicator.parameters:addInteger("Size", "Font Size", "", 15, 1, 1000) 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 first local source = nil local Up, Down local DS, KS local K, SD, D local Size local Stochastic = nil local font local Trend local TrendFilter function Prepare(nameOnly) TrendFilter = instance.parameters.TrendFilter DS = instance.parameters.DS KS = instance.parameters.KS K = instance.parameters.K SD = instance.parameters.SD D = instance.parameters.D Size = instance.parameters.Size Up = instance.parameters.Up Down = instance.parameters.Down source = instance.source local name = profile:id() .. "(" .. source:name() .. ", " .. source:barSize() .. ", " .. K .. ", " .. SD .. ", " .. D .. ", " .. KS .. ", " .. DS .. ")" instance:name(name) if (nameOnly) then return end Stochastic = core.indicators:create("STOCHASTIC", source, K, SD, D, KS, DS) first = Stochastic.D:first() Trend = instance:addInternalStream(first, 0) instance:ownerDrawn(true) end -- Indicator calculation routine function Update(period, mode) period = period - 1 Stochastic:update(mode) if Stochastic.K[period] > Stochastic.D[period] and Stochastic.K[period - 1] <= Stochastic.D[period - 1] then Trend[period] = 1 end if Stochastic.K[period] < Stochastic.D[period] and Stochastic.K[period - 1] >= Stochastic.D[period - 1] then Trend[period] = -1 end end local init = false function Draw(stage, context) if stage ~= 2 then return end if not init then context:createFont(1, "Wingdings", context:pointsToPixels(Size), context:pointsToPixels(Size), 0) init = true end local min, max, minpos, maxpos local from for period = math.max(first, context:firstBar()), math.min(context:lastBar(), source:size() - 1), 1 do if Trend:hasData(period) then if Trend[period] == 1 or Trend[period] == -1 then from = Find(period) min, max, minpos, maxpos = mathex.minmax(source, from, period - 1) if (Trend[period] ~= 1 and TrendFilter) or not TrendFilter then x1, x = context:positionOfBar(maxpos) visible, y1 = context:pointOfPrice(max) Text = "\225" width, height = context:measureText(1, Text, 0) context:drawText(1, Text, Up, -1, x1 - width / 2, y1 - height, x1 + width / 2, y1, 0) end if (Trend[period] ~= -1 and TrendFilter) or not TrendFilter then x2, x = context:positionOfBar(minpos) visible, y2 = context:pointOfPrice(min) Text = "\226" width, height = context:measureText(1, Text, 0) context:drawText(1, Text, Down, -1, x2 - width / 2, y2, x2 + width / 2, y2 + height, 0) end end end end end function Find(Start) local from for period = Start - 1, first, -1 do if Trend[period] == 1 or Trend[period] == -1 then from = period break end end return from end