Please note that Kagi chart does not depend on the time axis. To the the date and time when another Kagi segment is started, please move the mouse cursor the the arrow at the beginning of the segment. The date and time will be shown in the tooltip.
Parameters:
Sensitivity: the sensitivity of switch in expressed points
Length: the length of one segment in bars. Please note, this is not length of the source price, just a number of bars to draw one segment.
The lighter arrow is shown in case the segment is above (below) the previous segment of the same direction.
- Code: Select all
-- Indicator profile initialization routine
-- Defines indicator profile properties and indicator parameters
function Init()
indicator:name("Kagi Chart");
indicator:description("");
indicator:requiredSource(core.Bar);
indicator:type(core.Oscillator);
indicator.parameters:addDouble("S", "Sensitivity in points", "", 5, 0.1, 100);
indicator.parameters:addInteger("L", "Length in bars", "", 2, 1, 10);
indicator.parameters:addString("PT", "Price type", "", "M");
indicator.parameters:addStringAlternative("PT", "High", "", "H");
indicator.parameters:addStringAlternative("PT", "Low", "", "L");
indicator.parameters:addStringAlternative("PT", "Close", "", "C");
indicator.parameters:addStringAlternative("PT", "Median", "", "M");
indicator.parameters:addStringAlternative("PT", "Typical", "", "T");
indicator.parameters:addStringAlternative("PT", "Weigthed", "", "W");
indicator.parameters:addColor("LI", "Line color", "", core.rgb(128, 0, 0));
indicator.parameters:addColor("LH", "Highlight color", "", core.rgb(255, 0, 0));
end
-- Indicator instance initialization routine
-- Processes indicator parameters and creates output streams
-- Parameters block
local S, L;
local LI, UL, DL, UL1, DL1;
local first;
local source = nil;
local price = nil;
local pip;
local host;
-- Streams block
-- Routine
function Prepare()
source = instance.source;
-- size of the box in pips
S = instance.parameters.S * source:pipSize();
L = instance.parameters.L;
first = source:first();
host = core.host;
if instance.parameters.PT == "H" then
price = source.high;
elseif instance.parameters.PT == "L" then
price = source.low;
elseif instance.parameters.PT == "C" then
price = source.close;
elseif instance.parameters.PT == "M" then
price = source.median;
elseif instance.parameters.PT == "T" then
price = source.typical;
elseif instance.parameters.PT == "W" then
price = source.weighted;
end
local name = profile:id() .. "(" .. price:name() .. ", " .. instance.parameters.S .. ")";
instance:name(name);
LI = instance:addStream("L1", core.Line, name .. ".L1", "L1", instance.parameters.LI, first);
UL = instance:createTextOutput ("UL", "UL", "Wingdings", 8, core.H_Center, core.V_Top, instance.parameters.LI, 0);
DL = instance:createTextOutput ("UL", "UL", "Wingdings", 8, core.H_Center, core.V_Bottom, instance.parameters.LI, 0);
UL1 = instance:createTextOutput ("UL1", "UL1", "Wingdings", 8, core.H_Center, core.V_Top, instance.parameters.LH, 0);
DL1 = instance:createTextOutput ("UL1", "UL1", "Wingdings", 8, core.H_Center, core.V_Bottom, instance.parameters.LH, 0);
end
local lastdate = nil;
local laststart = nil;
-- Indicator calculation routine
function Update(period)
if lastdate ~= nil and lastdate > source:date(period) then
lastdate = nil;
end
if period == source:size() - 1 then
-- recalculate for the latest candle only
if source:isAlive() then
if lastdate == nil or lastdate ~= source:date(period) then
lastdate = source:date(period);
period = period - 1;
else
-- the last candle is still changing
return ;
end
end
else
-- do not work until the collection is finished
return ;
end
if period <= first then
return ;
end
local i, kagi, start, count;
kagi = {};
start = {};
count = 0;
kagi[count] = price[first];
start[count] = price:date(first);
-- calcute kagi
for i = first + 1, period, 1 do
if count == 0 then
if price[i] >= kagi[count] + S then
count = count + 1;
kagi[count] = price[i];
start[count] = price:date(i);
elseif price[i] <= kagi[count] - S then
count = count + 1;
kagi[count] = price[i];
start[count] = price:date(i);
end
else
if kagi[count] > kagi[count - 1] then
if price[i] > kagi[count] then
kagi[count] = price[i];
elseif price[i] < kagi[count] - S then
count = count + 1;
kagi[count] = price[i];
start[count] = price:date(i);
end
elseif kagi[count] < kagi[count - 1] then
if price[i] < kagi[count] then
kagi[count] = price[i];
elseif price[i] > kagi[count] + S then
count = count + 1;
kagi[count] = price[i];
start[count] = price:date(i);
end
end
end
end
-- draw kagi
local size1 = L;
local i, j, p, date, label, previous, b2, b3, level;
p = period - (count + 1) * size1;
if laststart ~= nil then
for i = math.max(laststart, 0), math.min(source:size(), p), 1 do
LI[i] = nil;
UL:setNoData(i);
DL:setNoData(i);
UL1:setNoData(i);
DL1:setNoData(i);
end
end
laststart = p;
for i = 0, count, 1 do
if p >= first then
if i > 1 then
date = core.dateToTable(host:execute("convertTime", 1, 4, start[i]));
label = string.format("Begins: %02i/%02i/%02i %02i:%02i", date.month, date.day, date.year, date.hour, date.min);
if kagi[i] > kagi[i - 1] then
if i > 2 and kagi[i] > kagi[i - 2] then
UL1:set(p, kagi[i], "\226", label);
else
UL:set(p, kagi[i], "\226", label);
end
else
if i > 2 and kagi[i] < kagi[i - 2] then
DL1:set(p, kagi[i], "\225", label);
else
DL:set(p, kagi[i], "\225", label);
end
end
end
for j = 0, size1 - 1, 1 do
LI[p + j] = kagi[i];
end
end
p = p + size1;
end
end
kagi.lua- (6.28 KiB) Downloaded 1525 times
- kagi_alert.lua
- (9.14 KiB) Downloaded 904 times
