-- More information about this indicator can be found at: -- http://fxcodebase.com/code/viewtopic.php?f=17&t=647&sid=08ab4875f1b7dcdac5560651dde3697d&start=50 --+------------------------------------------------------------------+ --| 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 | --| BitCoin : 15VCJTLaz12Amr7adHSBtL9v8XomURo9RF | --| BitCoin Cash: 1BEtS465S3Su438Kc58h2sqvVvHK9Mijtg | --| Ethereum : 0x8C110cD61538fb6d7A2B47858F0c0AaBd663068D | --| LiteCoin : LLU8PSY2vsq7B9kRELLZQcKf5nJQrdeqwD | --+------------------------------------------------------------------+ function Init() indicator:name("CSV Lines Helper Tool"); indicator:description(""); indicator:requiredSource(core.Bar); indicator:type(core.Indicator); indicator.parameters:addGroup("Calculation"); indicator.parameters:addFile("input_file", "CSV File", "", ""); indicator.parameters:addString("input_file_separator", "CSV File Separator", "", ","); indicator.parameters:addColor("color", "Line Color", "", core.rgb(0, 255, 0)); indicator.parameters:addInteger("width", "Line Width", "", 1, 1, 5); indicator.parameters:addInteger("style", "Line Style", "", core.LINE_SOLID); indicator.parameters:setFlag("style", core.FLAG_LINE_STYLE); indicator.parameters:addInteger("size_extended", "Size of Extended Bars", "", 10, 0, 100); indicator.parameters:addColor("color_extended", "Extended Line Color", "", core.rgb(0, 255, 0)); indicator.parameters:addInteger("width_extended", "Extended Line Width", "", 1, 1, 5); indicator.parameters:addInteger("style_extended", "Extended Line Style", "", core.LINE_DASH); indicator.parameters:setFlag("style_extended", core.FLAG_LINE_STYLE); end local first; local source; local Source; local loading; local lines; local color; local width; local style; local color_extended; local width_extended; local style_extended; local size_extended; local line_id = 1; function Prepare(nameOnly) source = instance.source; first = source:first(); local name; name = profile:id() .. "(" .. instance.source:name() .. ")"; instance:name(name); if (nameOnly) then return; end lines = parseFile(instance.parameters.input_file, instance.parameters.input_file_separator); color = instance.parameters.color; width = instance.parameters.width; style = instance.parameters.style; color_extended = instance.parameters.color_extended; width_extended = instance.parameters.width_extended; style_extended = instance.parameters.style_extended; size_extended = instance.parameters.size_extended; end function todate(str) -- dd/mm/yyyy hh:mm --local _day, _month, _year, _hour, _minute = string.match(str, '(%d+)/(%d+)/(%d+) (%d+):(%d+)'); local _month, _day, _year, _hour, _minute = string.match(str, '(%d+)/(%d+)/(%d+) (%d+):(%d+)'); local date = {year = _year, month = _month, day = _day, hour = _hour, min = _minute, sec = 0}; return core.tableToDate(date); end function parseFile(file, separator) local f = io.open(file, "r"); if (f == nil) then return {}; end f:close(); local new_lines = {}; for line in io.lines(file) do local values, values_count = core.parseCsv(line, separator); if values_count >= 4 then local line = {}; line.rate_1 = tonumber(values[1]); line.rate_2 = tonumber(values[3]); line.date_1 = todate(values[0]); line.date_2 = todate(values[2]); new_lines[#new_lines + 1] = line; else core.host:trace("Impossible to parse line: " .. line); end end return new_lines; end local linesDrawn = {}; function Update(period) for key, value in pairs(lines) do if linesDrawn[key] == nil then local x_1 = core.findDate(source, value.date_1, false); local x_2 = core.findDate(source, value.date_2, false); local y_1 = value.rate_1; local y_2 = value.rate_2; if x_1 ~= -1 and x_2 ~= -1 then linesDrawn[key] = true; drawline(x_1, y_1, x_2, y_2, color, style, width); local a = (y_2 - y_1) / (x_2 - x_1); local b = y_1 - a * x_1; if (x_1 > x_2) then local x_3 = x_2 - size_extended; drawline(x_3, x_3 * a + b, x_2, y_2, color_extended, style_extended, width_extended); else local x_3 = x_2 + size_extended; drawline(x_2, y_2, x_3, x_3 * a + b, color_extended, style_extended, width_extended); end end end end end -- draws line based on two fractals function drawline(x1, y1, x2, y2, color, style, width) local date1=0; local date2=0; x1 = correctIndexIfNeed(x1); x2 = correctIndexIfNeed(x2); date1 = source:date(x1); date2 = source:date(x2); core.host:execute("drawLine", line_id, date1, y1, date2, y2, color, style, width); line_id = line_id + 1; end function correctIndexIfNeed(x) if x >= source:size() then x = source:size() - 1; end if x < 0 then x = 0 end return x; end