Discussion of article "Statistical distributions in the form of histograms without indicator buffers and arrays"
Sergey, this is very interesting and I'd like to talk about it.
First, I don't know how to get the code from the news post. I ended up saving the code and copy-pasting it from the saved file. I'm not sure what an .mht file is.
Anyway I pasted the DrawHistogram() function but when I tried to compile it there were undefined variables. e.g color_R_active. Can you help me define those.
Thank you.
Chuck Stangor
cstangor:
Sergey, this is very interesting and I'd like to talk about it.
First, I don't know how to get the code from the news post. I ended up saving the code and copy-pasting it from the saved file. I'm not sure what an .mht file is.
Anyway I pasted the DrawHistogram() function but when I tried to compile it there were undefined variables. e.g color_R_active. Can you help me define those.
Thank you.
Chuck Stangor
Show the full code.
Sergey Pavlov:
Show the full code.
//+------------------------------------------------------------------+
//| draw_histogram.mqh |
//| Copyright 2016, MetaQuotes Software Corp. |
//| https://www.mql5.com |
//+------------------------------------------------------------------+
#property copyright "Copyright 2016, MetaQuotes Software Corp."
#property link "https://www.mql5.com"
//+------------------------------------------------------------------+
//| defines |
//+------------------------------------------------------------------+
// #define MacrosHello "Hello, world!"
// #define MacrosYear 2010
//+------------------------------------------------------------------+
//| DLL imports |
//+------------------------------------------------------------------+
// #import "user32.dll"
// int SendMessageA(int hWnd,int Msg,int wParam,int lParam);
// #import "my_expert.dll"
// int ExpertRecalculate(int wParam,int lParam);
// #import
//+------------------------------------------------------------------+
//| EX5 imports |
//+------------------------------------------------------------------+
// #import "stdlib.ex5"
// string ErrorDescription(int error_code);
// #import
//+------------------------------------------------------------------+
void DrawHistogram(bool draw, // draw a histogram to the left or to the right
string h_name, // unique prefix for the object name
double price, // price (analyzed parameter)
datetime time, // bind a histogram to the current bar
int span, // analyzed parameter digit capacity
int swin=0) // histogram window
{
double y=NormalizeDouble(price,span);
string pfx=DoubleToString(y,span);
// if draw=true, draw the histogram to the right
if(draw)
{
string name="+ "+h_name+pfx; // object name: prefix+price
ObjectCreate(0,name,OBJ_TREND,swin,time,y); // create the object
ObjectSetInteger(0,name,OBJPROP_COLOR,color_R_active); // set the object color
ObjSet; // code shortening macro
if(StringFind(ObjectGetString(0,name,OBJPROP_TEXT),"*",0)<0)
{// if the resulting price entered the sample for the first time
ObjectSetString(0,name,OBJPROP_TEXT,"*1"); // the price freuqency is 1
ObjectSetInteger(0,name,OBJPROP_TIME,1,time+hsize); // define the time coordinate
}
else
{// if the resulting price entered the sample not for the first time
string str=ObjectGetString(0,name,OBJPROP_TEXT); // get the property value
string strint=StringSubstr(str,1); // highlight the substring
long n=StringToInteger(strint); // get a frequency for further calculations
n++; // increase the value by 1
ObjectSetString(0,name,OBJPROP_TEXT,"*"+(string)n); // write a new value to the property
ObjectSetInteger(0,name,OBJPROP_TIME,1,time+hsize*n);//define the time coordinate
}
}
// if draw=false, write the histogram to the left
if(!draw)
{
string name="- "+h_name+pfx;
ObjectCreate(0,name,OBJ_TREND,swin,time,y);
ObjectSetInteger(0,name,OBJPROP_COLOR,color_L_active);
ObjSet;
if(StringFind(ObjectGetString(0,name,OBJPROP_TEXT),"*",0)<0)
{
ObjectSetString(0,name,OBJPROP_TEXT,"*1");
ObjectSetInteger(0,name,OBJPROP_TIME,1,time-hsize);
}
else
{
string str=ObjectGetString(0,name,OBJPROP_TEXT);
string strint=StringSubstr(str,1);
long n=StringToInteger(strint);
n++;
ObjectSetString(0,name,OBJPROP_TEXT,"*"+(string)n);
ObjectSetInteger(0,name,OBJPROP_TIME,1,time-hsize*n);
}
}
ChartRedraw();
}
//| draw_histogram.mqh |
//| Copyright 2016, MetaQuotes Software Corp. |
//| https://www.mql5.com |
//+------------------------------------------------------------------+
#property copyright "Copyright 2016, MetaQuotes Software Corp."
#property link "https://www.mql5.com"
//+------------------------------------------------------------------+
//| defines |
//+------------------------------------------------------------------+
// #define MacrosHello "Hello, world!"
// #define MacrosYear 2010
//+------------------------------------------------------------------+
//| DLL imports |
//+------------------------------------------------------------------+
// #import "user32.dll"
// int SendMessageA(int hWnd,int Msg,int wParam,int lParam);
// #import "my_expert.dll"
// int ExpertRecalculate(int wParam,int lParam);
// #import
//+------------------------------------------------------------------+
//| EX5 imports |
//+------------------------------------------------------------------+
// #import "stdlib.ex5"
// string ErrorDescription(int error_code);
// #import
//+------------------------------------------------------------------+
void DrawHistogram(bool draw, // draw a histogram to the left or to the right
string h_name, // unique prefix for the object name
double price, // price (analyzed parameter)
datetime time, // bind a histogram to the current bar
int span, // analyzed parameter digit capacity
int swin=0) // histogram window
{
double y=NormalizeDouble(price,span);
string pfx=DoubleToString(y,span);
// if draw=true, draw the histogram to the right
if(draw)
{
string name="+ "+h_name+pfx; // object name: prefix+price
ObjectCreate(0,name,OBJ_TREND,swin,time,y); // create the object
ObjectSetInteger(0,name,OBJPROP_COLOR,color_R_active); // set the object color
ObjSet; // code shortening macro
if(StringFind(ObjectGetString(0,name,OBJPROP_TEXT),"*",0)<0)
{// if the resulting price entered the sample for the first time
ObjectSetString(0,name,OBJPROP_TEXT,"*1"); // the price freuqency is 1
ObjectSetInteger(0,name,OBJPROP_TIME,1,time+hsize); // define the time coordinate
}
else
{// if the resulting price entered the sample not for the first time
string str=ObjectGetString(0,name,OBJPROP_TEXT); // get the property value
string strint=StringSubstr(str,1); // highlight the substring
long n=StringToInteger(strint); // get a frequency for further calculations
n++; // increase the value by 1
ObjectSetString(0,name,OBJPROP_TEXT,"*"+(string)n); // write a new value to the property
ObjectSetInteger(0,name,OBJPROP_TIME,1,time+hsize*n);//define the time coordinate
}
}
// if draw=false, write the histogram to the left
if(!draw)
{
string name="- "+h_name+pfx;
ObjectCreate(0,name,OBJ_TREND,swin,time,y);
ObjectSetInteger(0,name,OBJPROP_COLOR,color_L_active);
ObjSet;
if(StringFind(ObjectGetString(0,name,OBJPROP_TEXT),"*",0)<0)
{
ObjectSetString(0,name,OBJPROP_TEXT,"*1");
ObjectSetInteger(0,name,OBJPROP_TIME,1,time-hsize);
}
else
{
string str=ObjectGetString(0,name,OBJPROP_TEXT);
string strint=StringSubstr(str,1);
long n=StringToInteger(strint);
n++;
ObjectSetString(0,name,OBJPROP_TEXT,"*"+(string)n);
ObjectSetInteger(0,name,OBJPROP_TIME,1,time-hsize*n);
}
}
ChartRedraw();
}
//+------------------------------------------------------------------+
//| draw_histogram.mqh |
//| Copyright 2016, MetaQuotes Software Corp. |
//| https://www.mql5.com |
//+------------------------------------------------------------------+
#property copyright "Copyright 2016, MetaQuotes Software Corp."
#property link "https://www.mql5.com"
//--- Макросы
#define R 43 // значения префикса (+) для гистограмм справа
#define L 45 // значения префикса (-) для гистограмм слева
#define WIDTH 2 // толщина линий
#define ObjSet1 ObjectSetInteger(0,name,OBJPROP_WIDTH,WIDTH)
#define ObjSet2 ObjectSetDouble(0,name,OBJPROP_PRICE,0,y)
#define ObjSet3 ObjectSetInteger(0,name,OBJPROP_TIME,0,time)
#define ObjSet4 ObjectSetDouble(0,name,OBJPROP_PRICE,1,y)
#define ObjSet5 ObjectSetInteger(0,name,OBJPROP_BACK,true)
#define ObjSet ObjSet1;ObjSet2;ObjSet3;ObjSet4;ObjSet5
//---
int hsize=10; // масштаб гистограммы
color color_R_active=clrRed; // цвет активных линий справа
color color_R_passive=clrLightCoral;// цвет пассивных линий справа
color color_L_active=clrBlue; // цвет активных линий слева
color color_L_passive=clrSkyBlue; // цвет пассивных линий слева
void DrawHistogram(bool draw, // draw a histogram to the left or to the right
string h_name, // unique prefix for the object name
double price, // price (analyzed parameter)
datetime time, // bind a histogram to the current bar
int span, // analyzed parameter digit capacity
int swin=0) // histogram window
{
double y=NormalizeDouble(price,span);
string pfx=DoubleToString(y,span);
// if draw=true, draw the histogram to the right
if(draw)
{
string name="+ "+h_name+pfx; // object name: prefix+price
ObjectCreate(0,name,OBJ_TREND,swin,time,y); // create the object
ObjectSetInteger(0,name,OBJPROP_COLOR,color_R_active); // set the object color
ObjSet; // code shortening macro
if(StringFind(ObjectGetString(0,name,OBJPROP_TEXT),"*",0)<0)
{// if the resulting price entered the sample for the first time
ObjectSetString(0,name,OBJPROP_TEXT,"*1"); // the price freuqency is 1
ObjectSetInteger(0,name,OBJPROP_TIME,1,time+hsize); // define the time coordinate
}
else
{// if the resulting price entered the sample not for the first time
string str=ObjectGetString(0,name,OBJPROP_TEXT); // get the property value
string strint=StringSubstr(str,1); // highlight the substring
long n=StringToInteger(strint); // get a frequency for further calculations
n++; // increase the value by 1
ObjectSetString(0,name,OBJPROP_TEXT,"*"+(string)n); // write a new value to the property
ObjectSetInteger(0,name,OBJPROP_TIME,1,time+hsize*n);//define the time coordinate
}
}
// if draw=false, write the histogram to the left
if(!draw)
{
string name="- "+h_name+pfx;
ObjectCreate(0,name,OBJ_TREND,swin,time,y);
ObjectSetInteger(0,name,OBJPROP_COLOR,color_L_active);
ObjSet;
if(StringFind(ObjectGetString(0,name,OBJPROP_TEXT),"*",0)<0)
{
ObjectSetString(0,name,OBJPROP_TEXT,"*1");
ObjectSetInteger(0,name,OBJPROP_TIME,1,time-hsize);
}
else
{
string str=ObjectGetString(0,name,OBJPROP_TEXT);
string strint=StringSubstr(str,1);
long n=StringToInteger(strint);
n++;
ObjectSetString(0,name,OBJPROP_TEXT,"*"+(string)n);
ObjectSetInteger(0,name,OBJPROP_TIME,1,time-hsize*n);
}
}
ChartRedraw();
}
//| draw_histogram.mqh |
//| Copyright 2016, MetaQuotes Software Corp. |
//| https://www.mql5.com |
//+------------------------------------------------------------------+
#property copyright "Copyright 2016, MetaQuotes Software Corp."
#property link "https://www.mql5.com"
//--- Макросы
#define R 43 // значения префикса (+) для гистограмм справа
#define L 45 // значения префикса (-) для гистограмм слева
#define WIDTH 2 // толщина линий
#define ObjSet1 ObjectSetInteger(0,name,OBJPROP_WIDTH,WIDTH)
#define ObjSet2 ObjectSetDouble(0,name,OBJPROP_PRICE,0,y)
#define ObjSet3 ObjectSetInteger(0,name,OBJPROP_TIME,0,time)
#define ObjSet4 ObjectSetDouble(0,name,OBJPROP_PRICE,1,y)
#define ObjSet5 ObjectSetInteger(0,name,OBJPROP_BACK,true)
#define ObjSet ObjSet1;ObjSet2;ObjSet3;ObjSet4;ObjSet5
//---
int hsize=10; // масштаб гистограммы
color color_R_active=clrRed; // цвет активных линий справа
color color_R_passive=clrLightCoral;// цвет пассивных линий справа
color color_L_active=clrBlue; // цвет активных линий слева
color color_L_passive=clrSkyBlue; // цвет пассивных линий слева
void DrawHistogram(bool draw, // draw a histogram to the left or to the right
string h_name, // unique prefix for the object name
double price, // price (analyzed parameter)
datetime time, // bind a histogram to the current bar
int span, // analyzed parameter digit capacity
int swin=0) // histogram window
{
double y=NormalizeDouble(price,span);
string pfx=DoubleToString(y,span);
// if draw=true, draw the histogram to the right
if(draw)
{
string name="+ "+h_name+pfx; // object name: prefix+price
ObjectCreate(0,name,OBJ_TREND,swin,time,y); // create the object
ObjectSetInteger(0,name,OBJPROP_COLOR,color_R_active); // set the object color
ObjSet; // code shortening macro
if(StringFind(ObjectGetString(0,name,OBJPROP_TEXT),"*",0)<0)
{// if the resulting price entered the sample for the first time
ObjectSetString(0,name,OBJPROP_TEXT,"*1"); // the price freuqency is 1
ObjectSetInteger(0,name,OBJPROP_TIME,1,time+hsize); // define the time coordinate
}
else
{// if the resulting price entered the sample not for the first time
string str=ObjectGetString(0,name,OBJPROP_TEXT); // get the property value
string strint=StringSubstr(str,1); // highlight the substring
long n=StringToInteger(strint); // get a frequency for further calculations
n++; // increase the value by 1
ObjectSetString(0,name,OBJPROP_TEXT,"*"+(string)n); // write a new value to the property
ObjectSetInteger(0,name,OBJPROP_TIME,1,time+hsize*n);//define the time coordinate
}
}
// if draw=false, write the histogram to the left
if(!draw)
{
string name="- "+h_name+pfx;
ObjectCreate(0,name,OBJ_TREND,swin,time,y);
ObjectSetInteger(0,name,OBJPROP_COLOR,color_L_active);
ObjSet;
if(StringFind(ObjectGetString(0,name,OBJPROP_TEXT),"*",0)<0)
{
ObjectSetString(0,name,OBJPROP_TEXT,"*1");
ObjectSetInteger(0,name,OBJPROP_TIME,1,time-hsize);
}
else
{
string str=ObjectGetString(0,name,OBJPROP_TEXT);
string strint=StringSubstr(str,1);
long n=StringToInteger(strint);
n++;
ObjectSetString(0,name,OBJPROP_TEXT,"*"+(string)n);
ObjectSetInteger(0,name,OBJPROP_TIME,1,time-hsize*n);
}
}
ChartRedraw();
}
Sergey Pavlov:
Thank you !
//+------------------------------------------------------------------+
//| draw_histogram.mqh |
//| Copyright 2016, MetaQuotes Software Corp. |
//| https://www.mql5.com |
//+------------------------------------------------------------------+
#property copyright "Copyright 2016, MetaQuotes Software Corp."
#property link "https://www.mql5.com"
//--- Макросы
#define R 43 // значения префикса (+) для гистограмм справа
#define L 45 // значения префикса (-) для гистограмм слева
#define WIDTH 2 // толщина линий
#define ObjSet1 ObjectSetInteger(0,name,OBJPROP_WIDTH,WIDTH)
#define ObjSet2 ObjectSetDouble(0,name,OBJPROP_PRICE,0,y)
#define ObjSet3 ObjectSetInteger(0,name,OBJPROP_TIME,0,time)
#define ObjSet4 ObjectSetDouble(0,name,OBJPROP_PRICE,1,y)
#define ObjSet5 ObjectSetInteger(0,name,OBJPROP_BACK,true)
#define ObjSet ObjSet1;ObjSet2;ObjSet3;ObjSet4;ObjSet5
//---
int hsize=10; // масштаб гистограммы
color color_R_active=clrRed; // цвет активных линий справа
color color_R_passive=clrLightCoral;// цвет пассивных линий справа
color color_L_active=clrBlue; // цвет активных линий слева
color color_L_passive=clrSkyBlue; // цвет пассивных линий слева
void DrawHistogram(bool draw, // draw a histogram to the left or to the right
string h_name, // unique prefix for the object name
double price, // price (analyzed parameter)
datetime time, // bind a histogram to the current bar
int span, // analyzed parameter digit capacity
int swin=0) // histogram window
{
double y=NormalizeDouble(price,span);
string pfx=DoubleToString(y,span);
// if draw=true, draw the histogram to the right
if(draw)
{
string name="+ "+h_name+pfx; // object name: prefix+price
ObjectCreate(0,name,OBJ_TREND,swin,time,y); // create the object
ObjectSetInteger(0,name,OBJPROP_COLOR,color_R_active); // set the object color
ObjSet; // code shortening macro
if(StringFind(ObjectGetString(0,name,OBJPROP_TEXT),"*",0)<0)
{// if the resulting price entered the sample for the first time
ObjectSetString(0,name,OBJPROP_TEXT,"*1"); // the price freuqency is 1
ObjectSetInteger(0,name,OBJPROP_TIME,1,time+hsize); // define the time coordinate
}
else
{// if the resulting price entered the sample not for the first time
string str=ObjectGetString(0,name,OBJPROP_TEXT); // get the property value
string strint=StringSubstr(str,1); // highlight the substring
long n=StringToInteger(strint); // get a frequency for further calculations
n++; // increase the value by 1
ObjectSetString(0,name,OBJPROP_TEXT,"*"+(string)n); // write a new value to the property
ObjectSetInteger(0,name,OBJPROP_TIME,1,time+hsize*n);//define the time coordinate
}
}
// if draw=false, write the histogram to the left
if(!draw)
{
string name="- "+h_name+pfx;
ObjectCreate(0,name,OBJ_TREND,swin,time,y);
ObjectSetInteger(0,name,OBJPROP_COLOR,color_L_active);
ObjSet;
if(StringFind(ObjectGetString(0,name,OBJPROP_TEXT),"*",0)<0)
{
ObjectSetString(0,name,OBJPROP_TEXT,"*1");
ObjectSetInteger(0,name,OBJPROP_TIME,1,time-hsize);
}
else
{
string str=ObjectGetString(0,name,OBJPROP_TEXT);
string strint=StringSubstr(str,1);
long n=StringToInteger(strint);
n++;
ObjectSetString(0,name,OBJPROP_TEXT,"*"+(string)n);
ObjectSetInteger(0,name,OBJPROP_TIME,1,time-hsize*n);
}
}
ChartRedraw();
}
//| draw_histogram.mqh |
//| Copyright 2016, MetaQuotes Software Corp. |
//| https://www.mql5.com |
//+------------------------------------------------------------------+
#property copyright "Copyright 2016, MetaQuotes Software Corp."
#property link "https://www.mql5.com"
//--- Макросы
#define R 43 // значения префикса (+) для гистограмм справа
#define L 45 // значения префикса (-) для гистограмм слева
#define WIDTH 2 // толщина линий
#define ObjSet1 ObjectSetInteger(0,name,OBJPROP_WIDTH,WIDTH)
#define ObjSet2 ObjectSetDouble(0,name,OBJPROP_PRICE,0,y)
#define ObjSet3 ObjectSetInteger(0,name,OBJPROP_TIME,0,time)
#define ObjSet4 ObjectSetDouble(0,name,OBJPROP_PRICE,1,y)
#define ObjSet5 ObjectSetInteger(0,name,OBJPROP_BACK,true)
#define ObjSet ObjSet1;ObjSet2;ObjSet3;ObjSet4;ObjSet5
//---
int hsize=10; // масштаб гистограммы
color color_R_active=clrRed; // цвет активных линий справа
color color_R_passive=clrLightCoral;// цвет пассивных линий справа
color color_L_active=clrBlue; // цвет активных линий слева
color color_L_passive=clrSkyBlue; // цвет пассивных линий слева
void DrawHistogram(bool draw, // draw a histogram to the left or to the right
string h_name, // unique prefix for the object name
double price, // price (analyzed parameter)
datetime time, // bind a histogram to the current bar
int span, // analyzed parameter digit capacity
int swin=0) // histogram window
{
double y=NormalizeDouble(price,span);
string pfx=DoubleToString(y,span);
// if draw=true, draw the histogram to the right
if(draw)
{
string name="+ "+h_name+pfx; // object name: prefix+price
ObjectCreate(0,name,OBJ_TREND,swin,time,y); // create the object
ObjectSetInteger(0,name,OBJPROP_COLOR,color_R_active); // set the object color
ObjSet; // code shortening macro
if(StringFind(ObjectGetString(0,name,OBJPROP_TEXT),"*",0)<0)
{// if the resulting price entered the sample for the first time
ObjectSetString(0,name,OBJPROP_TEXT,"*1"); // the price freuqency is 1
ObjectSetInteger(0,name,OBJPROP_TIME,1,time+hsize); // define the time coordinate
}
else
{// if the resulting price entered the sample not for the first time
string str=ObjectGetString(0,name,OBJPROP_TEXT); // get the property value
string strint=StringSubstr(str,1); // highlight the substring
long n=StringToInteger(strint); // get a frequency for further calculations
n++; // increase the value by 1
ObjectSetString(0,name,OBJPROP_TEXT,"*"+(string)n); // write a new value to the property
ObjectSetInteger(0,name,OBJPROP_TIME,1,time+hsize*n);//define the time coordinate
}
}
// if draw=false, write the histogram to the left
if(!draw)
{
string name="- "+h_name+pfx;
ObjectCreate(0,name,OBJ_TREND,swin,time,y);
ObjectSetInteger(0,name,OBJPROP_COLOR,color_L_active);
ObjSet;
if(StringFind(ObjectGetString(0,name,OBJPROP_TEXT),"*",0)<0)
{
ObjectSetString(0,name,OBJPROP_TEXT,"*1");
ObjectSetInteger(0,name,OBJPROP_TIME,1,time-hsize);
}
else
{
string str=ObjectGetString(0,name,OBJPROP_TEXT);
string strint=StringSubstr(str,1);
long n=StringToInteger(strint);
n++;
ObjectSetString(0,name,OBJPROP_TEXT,"*"+(string)n);
ObjectSetInteger(0,name,OBJPROP_TIME,1,time-hsize*n);
}
}
ChartRedraw();
}
mr Sergey,
I´m trying plot tick buy and sell volume instead bid and ask to have a volume at price like indicator, is it possible ? do you have some code with tick buy/sell volume that can post ?
thank´s very much !
Example of data that I want to plot, it plots a horizontal histogram of buy/sell tick volume in separate window I want to plot a vertical histogram in main chart window :
#property indicator_separate_window #property indicator_buffers 2 #property indicator_plots 2 // #property indicator_label1 "SELL Tick" #property indicator_type1 DRAW_HISTOGRAM #property indicator_color1 clrTomato #property indicator_style1 STYLE_SOLID // #property indicator_label2 "BUY Tick" #property indicator_type2 DRAW_HISTOGRAM #property indicator_color2 clrSpringGreen #property indicator_style2 STYLE_SOLID #property indicator_width2 5 //--- indicator buffers double ExtBuyBuffer[]; double ExtSellBuffer[]; int OnInit() { //--- indicator buffers mapping SetIndexBuffer(0,ExtBuyBuffer,INDICATOR_DATA); SetIndexBuffer(1,ExtSellBuffer,INDICATOR_DATA); PlotIndexSetDouble(0,PLOT_EMPTY_VALUE,0); PlotIndexSetDouble(1,PLOT_EMPTY_VALUE,0); //--- return(INIT_SUCCEEDED); } 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[]) { static int ticks=0; //--- if(ticks==0) { ArrayInitialize(ExtSellBuffer,0); ArrayInitialize(ExtBuyBuffer,0); } //--- MqlTick last_tick; if(SymbolInfoTick(Symbol(),last_tick) && last_tick.flags == 56) { ExtBuyBuffer[ticks]+=NormalizeDouble(last_tick.volume,2); int shift=rates_total-1-ticks; ticks++; ExtBuyBuffer[rates_total-1]=last_tick.volume; PlotIndexSetInteger(0,PLOT_SHIFT,shift); } if(SymbolInfoTick(Symbol(),last_tick) && last_tick.flags == 88) { ExtSellBuffer[ticks]+=NormalizeDouble(last_tick.volume,2); int shift=rates_total-1-ticks; ticks++; ExtSellBuffer[rates_total-1]=last_tick.volume; PlotIndexSetInteger(1,PLOT_SHIFT,shift); } // //--- return value of prev_calculated for next call return(rates_total); }
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New article Statistical distributions in the form of histograms without indicator buffers and arrays has been published:
The article discusses the possibility of plotting statistical distribution histograms of market conditions with the help of the graphical memory meaning no indicator buffers and arrays are applied. Sample histograms are described in details and the "hidden" functionality of MQL5 graphical objects is shown.
In this article, we will focus on the vertical histograms of the variation series: price values of the analyzed parameters are to be located on the vertical axis in ascending order, while frequency is to be located on the horizontal axis (Fig. 1). Incoming price data are distributed and grouped on the current bar and can be displayed relative to its axis from the left, right or both sides simultaneously.
Fig. 1. Vertical histogram of Bid and Ask prices distribution
Author: Sergey Pavlov