Problem with huge amount of levels
timmytrade:
Hello,
I found very useful Key Levels indicator from codebase here
But the problem is that it draws lot of lines to the charts and during rapid price movements, like news, this indicator laggs candles, price and charts overall.
So I would like to know is there any way to reduce the number of those lines somehow? There should only be so many lines to see like active chart is.
Hello , try this , it uses the canvas to draw the lines (ideally you'd catch the price range and only recalc levels when it changes)
//warm up 19092024 #property indicator_chart_window #include <Canvas\Canvas.mqh> #define SYSTEM_TAG "Key Levels" input string interested="00,50,20,80";//interested in levels input string their_colors="Red,Orange,Green,Blue";//parallel colors input string their_font="Arial";//font input int their_fontsize=12;//font size CCanvas OUTPUT; int screenX=0,screenY=0; string points[];//we store the points we are interested in here color colors[];//and their colors here bool READY=false; int OnInit() { READY=false; //extract the points ArrayFree(points); ArrayFree(colors); ushort usep=StringGetCharacter(",",0); StringSplit(interested,usep,points); //extract the colors string parts[]; StringSplit(their_colors,usep,parts); if(ArraySize(parts)>0){ ArrayResize(colors,ArraySize(parts),0); for(int i=0;i<ArraySize(parts);i++){ colors[i]=StringToColor("clr"+parts[i]); } } //if we have not the same number of points and colors , nah if(ArraySize(points)!=ArraySize(colors)){ if(ArraySize(points)<ArraySize(colors)){Alert("Missing some point values");} else{Alert("Missing some colors");} return(INIT_FAILED); } //clean up ObjectsDeleteAll(ChartID(),SYSTEM_TAG); //create our display screenX=(int)ChartGetInteger(ChartID(),CHART_WIDTH_IN_PIXELS,0); screenY=(int)ChartGetInteger(ChartID(),CHART_HEIGHT_IN_PIXELS,0); //we are creating a "screen" bitmap to display your key levels that are in view OUTPUT.CreateBitmapLabel(ChartID(),0,SYSTEM_TAG+"_OUTPUT",0,0,screenX,screenY,COLOR_FORMAT_ARGB_NORMALIZE); OUTPUT.Erase(0); READY=true; return(INIT_SUCCEEDED); } //+------------------------------------------------------------------+ //| Custom indicator iteration function | //+------------------------------------------------------------------+ int OnCalculate(const int rates_total, const int prev_calculated, const datetime &time[], const double &open[], const double &high[], const double &low[], const double &close[], const long &tick_volume[], const long &volume[], const int &spread[]) { return(rates_total); } void OnChartEvent(const int id, const long &lparam, const double &dparam, const string &sparam) { if(READY){ if(id==CHARTEVENT_CHART_CHANGE){ int scx=(int)ChartGetInteger(ChartID(),CHART_WIDTH_IN_PIXELS,0); int scy=(int)ChartGetInteger(ChartID(),CHART_HEIGHT_IN_PIXELS,0); if(scx!=screenX||scy!=screenY){ OUTPUT.Resize(scx,scy); screenX=scx; screenY=scy; } display_key_levels(); } } } //function to display key levels on our "screen" void display_key_levels(){ OUTPUT.Erase(0); /* okay so what we'll do here 0.First we grab the max price and the min price of the chart 1.each point entry in our array represents some "last digits" we'd like to mark when they show up So for each point entry : ---A.get the digits size ---B.obscure those rightmost digits in the max and min price ---C.form an integer loop that goes into all the possible candidate prices ---D.append the "point entry" we are processing and draw a line and drop a text too maybe */ double max_price=(double)ChartGetDouble(ChartID(),CHART_PRICE_MAX,0); double min_price=(double)ChartGetDouble(ChartID(),CHART_PRICE_MIN,0); //so loop into our "points entries" for(int i=0;i<ArraySize(points);i++){ //a.how many digits ? int entry_digits=StringLen(points[i]); //b.obscure by multiplying int max_int=(int)(MathPow(10.0,_Digits-entry_digits)*max_price); int min_int=(int)(MathPow(10.0,_Digits-entry_digits)*min_price); int injection_points=StringToInteger(points[i]); //c.integer loop and draw OUTPUT.FontSet(their_font,their_fontsize,FW_NORMAL,0); for(int j=min_int;j<=max_int;j++){ //these are essentially points divided by _Digits-entry_digits int in_points=j*(int)(MathPow(10,entry_digits))+injection_points; double in_price=NormalizeDouble(((double)in_points)/MathPow(10.0,_Digits),_Digits); //now find the y coordinates of the price int x=0,y=0; ChartTimePriceToXY(ChartID(),0,0,in_price,x,y); //and draw a line OUTPUT.LineHorizontal(0,screenX,y,ColorToARGB(colors[i],255)); //and our text OUTPUT.TextOut(screenX,y,DoubleToString(in_price,_Digits),ColorToARGB(colors[i],255),TA_RIGHT|TA_BOTTOM); } } OUTPUT.Update(true); }
Lorentzos Roussos #:
Hello , try this , it uses the canvas to draw the lines (ideally you'd catch the price range and only recalc levels when it changes)
Can you help to make it work on Gold pair too?
I just don't get that digits thing in gold, drives me crazy.
Example: I would like to get line on price 2670.00, 2665.00, 2660.00, 2655.00.. you see the end of price is always 0.00 or 5.00.
How can I do that?
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Hello,
I found very useful Key Levels indicator from codebase here
But the problem is that it draws lot of lines to the charts and during rapid price movements, like news, this indicator laggs candles, price and charts overall.
So I would like to know is there any way to reduce the number of those lines somehow? There should only be so many lines to see like active chart is.