Why are the indicators (lines, arrows, histograms) flickering in the MT5 terminal?
What can the flicker of the indicators (lines, arrows, histograms) be related to, both in the main chart window and in a separate window? The impression is that the indicator is redrawn, and at the same time in the data window the labels and buffer values disappear from the list for a second, and then appear again in the list. Something wrong in the program code?
And this is only observed in the MT5 terminal, it is not observed in MT4.
Are you suggesting that we try to guess? Feel free to contact me ; )
No, it's just that the search didn't answer the question I'm interested in.
Maybe you know why the flicker is only observed in the MT5 exchange terminal, in the MT5 forex terminal the flicker does not occur?
No, the search just didn't answer the question I was interested in.
Maybe you know why the flicker is only observed in the MT5 exchange terminal, in the MT5 forex terminal there is no flicker?
Do all indicators flicker? The MT5 is the same, only the account type may be different - exchange or forex.
That's what I meant when I mentioned the MT5 forex and stock exchange terminal for short. A more complete problem sounds like this. When I connect to forex broker the indicators in MT5 terminal do not flicker, but when I connect to stock broker I see flickering and also indicators buffer marks and values disappear in data window for a second or two.
As for the question of whether all indicators behave this way, I can't say so. Let me post one now, so as not to be unsubstantiated.
//+-----------------------------------------------------------------------------------------------------+ //| AOM = Awesome Oscillator Modernized (индикатор AO Модернизированный) //+-----------------------------------------------------------------------------------------------------+ #property copyright "Copyright© 2014, Scriptolog® [ myzrov@mail.ru ]" #property link "mailto:myzrov@mail.ru" #property version "2.0" // текущая версия #property description "«AOM» - индикатор «AO» модернизированный.\n" #property description "Предупреждение о рисках. Торговля на рынке Forex с использованием" #property description "кредитного плеча несёт в себе значительные финансовые риски." //#property icon "\\Images\\Constructor.ico" // путь к файлу заставки #property strict #property indicator_separate_window #property indicator_buffers 2 #property indicator_plots 2 //+------------------------------------------------------------------+ //| | //+------------------------------------------------------------------+ #property indicator_label1 "AOM UP" #property indicator_color1 clrGreen #property indicator_width1 3 #property indicator_style1 STYLE_SOLID #property indicator_type1 DRAW_HISTOGRAM #property indicator_label2 "AOM DN" #property indicator_color2 clrRed #property indicator_width2 3 #property indicator_style2 STYLE_SOLID #property indicator_type2 DRAW_HISTOGRAM #property indicator_level1 0.0000 // Горизонтальный уровень в отдельном окне индикатора input int AOM_PERIOD_FACTOR = 1; // AOM. Коэф-т повышения периода усреднения input int AOM_PERIOD_FAST = 5; // AOM. Период усреднения MA быстрой input int AOM_PERIOD_SLOW = 34; // AOM. Период усреднения MA медленной input int AOM_SHIFT = 0; // AOM. Сдвиг по горизонтали input ENUM_MA_METHOD AOM_METHOD = MODE_SMA; // AOM. Метод усреднения input ENUM_APPLIED_PRICE AOM_PRICE = PRICE_MEDIAN; // AOM. Цена усреднения //+------------------------------------------------------------------+ //| Глобальные переменные //+------------------------------------------------------------------+ double aUP[], aDN[]; // INDICATOR_DATA double aom, last_aom; // текущее и предыдущее значения индикатора AO int ma_fast_handle; // =iMA(_Symbol, PERIOD_CURRENT, AOM_PERIOD_FAST, AOM_SHIFT, AOM_METHOD, AOM_PRICE); int ma_slow_handle; // =iMA(_Symbol, PERIOD_CURRENT, AOM_PERIOD_SLOW, AOM_SHIFT, AOM_METHOD, AOM_PRICE); int MAX_PERIOD; // периоды усреднения быстрой и медленной MA (в барах) int AOM1_PERIOD_FAST; // =AOM_PERIOD_FAST*AOM_PERIOD_FACTOR; int AOM1_PERIOD_SLOW; // =AOM_PERIOD_SLOW*AOM_PERIOD_FACTOR; //+------------------------------------------------------------------+ //| Custom indicator initialization function //+------------------------------------------------------------------+ int OnInit() { // Подготовить периоды усреднения быстрой и медленной MA (в барах) AOM1_PERIOD_FAST=AOM_PERIOD_FAST*AOM_PERIOD_FACTOR; AOM1_PERIOD_SLOW=AOM_PERIOD_SLOW*AOM_PERIOD_FACTOR; MAX_PERIOD=(int)MathMax(AOM1_PERIOD_FAST, AOM1_PERIOD_SLOW)+1; // Распределяет память под буферы, используемые для вычислений пользовательского индикатора ArraySetAsSeries(aUP, true); SetIndexBuffer(0, aUP, INDICATOR_DATA); ArraySetAsSeries(aDN, true); SetIndexBuffer(1, aDN, INDICATOR_DATA); // Номер позиции начала отрисовки линии индикатора // sets drawing line empty value PlotIndexSetInteger(0, PLOT_DRAW_BEGIN, MAX_PERIOD); PlotIndexSetDouble(0, PLOT_EMPTY_VALUE, EMPTY_VALUE); PlotIndexSetInteger(1, PLOT_DRAW_BEGIN, MAX_PERIOD); PlotIndexSetDouble(1, PLOT_EMPTY_VALUE, EMPTY_VALUE); // set accuracy IndicatorSetInteger(INDICATOR_DIGITS, _Digits+1); string short_name; StringConcatenate(short_name, "AOM [", AOM_PERIOD_FACTOR, "] (", AOM_PERIOD_FAST, ",", AOM_PERIOD_SLOW, ")"); IndicatorSetString(INDICATOR_SHORTNAME, short_name); ResetLastError(); // Инициализация 2-х индикаторов MA ma_fast_handle=iMA(_Symbol, PERIOD_CURRENT, AOM1_PERIOD_FAST, AOM_SHIFT, AOM_METHOD, AOM_PRICE); ma_slow_handle=iMA(_Symbol, PERIOD_CURRENT, AOM1_PERIOD_SLOW, AOM_SHIFT, AOM_METHOD, AOM_PRICE); return(INIT_SUCCEEDED); } //+------------------------------------------------------------------+ //| Функция деинициализации является обработчиком события Deinit //+------------------------------------------------------------------+ void OnDeinit(const int reason) { // Удалить хэндлы индикаторов и освобождить расчетную часть индикатора if (ma_slow_handle!=INVALID_HANDLE) IndicatorRelease(ma_slow_handle); if (ma_fast_handle!=INVALID_HANDLE) IndicatorRelease(ma_fast_handle); return; } //+------------------------------------------------------------------+ //| Custom indicator iteration function //+------------------------------------------------------------------+ int OnCalculate (const int rates_total, // размер входных таймсерий const int prev_calculated, // обработано баров на предыдущем вызове const datetime& time[], // Time const double& open[], // Open const double& high[], // High const double& low [], // Low const double& close[], // Close const long& tick_volume[], // Tick Volume const long& real_volume[], // Real Volume const int& spread[]) // Spread { int N=rates_total-prev_calculated; if (N>MAX_PERIOD) N-=MAX_PERIOD; for (int i=N; i>0 && !IsStopped(); i--) { double ma_fast=getMA(ma_fast_handle, i); double ma_slow=getMA(ma_slow_handle, i);; aom=ma_fast-ma_slow; if (aom>last_aom) {aUP[i]=aom; aDN[i]=EMPTY_VALUE;} else {aDN[i]=aom; aUP[i]=EMPTY_VALUE;} last_aom=aom; } aUP[0]=EMPTY_VALUE; aDN[0]=EMPTY_VALUE; return(rates_total); } //+-------------------------------------------------------+ //| Возвращает значение индикатора «MA» //+-------------------------------------------------------+ double getMA(int handle, int i) // откуда начнем копирование { double aMA[1]; // массив для получения значениz индикатора double nMA=0; int k=CopyBuffer(handle, 0, i, 1, aMA); nMA=aMA[0]; if (k<1) {int err=GetLastError(); Print("*** MA=", handle, " CopyBuffer error #", err);} return(nMA); }
I observe this behaviour when there are many objects. When there are no objects, everything is more or less normal. Indicator buffers can also blink sometimes when a tick comes (when there are objects updating).
I think this is a feature of MT5, it is connected with the fact that now indicators are in separate threads for each symbol/timestamp and for updating the picture in GUI thread it needs synchronization, which adds slowness in comparison with the single thread model of MT4. Working with objects is the most resource intensive operation, that's why it causes this problem. If the problem is observed without objects, perhaps there is some other loading in the code of the indicator. If you try to localise it and exclude it, it should get better.
The indicator doesn't work with objects, so that can be ruled out. I admit that it may be related to software code, but the code I cited above is very simple and I just can't see where it is failing. The main questions still remain unanswered - who is to blame and what to do? Is there any way to deal with it or is it incorrigible in principle? Perhaps the developers will have their say here!
By the way, it's morning, stock exchange has not opened yet, so all indicators are standing like sticks, buffers in the "Data Window" are not redrawn, lines do not blink.
Well, the exchange opened, and again all the same movie. I can understand that indicator data is recalculated with every tick, but why should I remove all indicator buffers from the data window table? Isn't it enough just to update their values in place? For example, the way it is done with the Close price. After all, with a new tick the Close price does not disappear from the data window to appear again with the updated value? Why then do indicator buffers disappear for some time? Also, some indicators are not recalculated on the current zero bar, but why are they also redrawn in the "Data Window"?
Still hoping for an answer from knowledgeable people, or at least a link.
There seems to be something wrong. Either my question is no longer relevant and a solution has long since been found, or I asked it in the wrong thread. Maybe there are no more knowledgeable people on the forum, or the developers do not monitor this section of the forum?
Why in the "Data Window" indicator buffers disappear for some time? Is this not fixed in principle or is it fixable? What's wrong in the above code? And the indicator does not recalculate its value on the current bar.
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What can the blinking of indicators (lines, arrows, histograms) be related to, both in the main chart window and in a separate window? The impression is that the indicator is redrawn and at the same time the marks and the buffer values disappear from the list for a second, and then appear again in the list. Is there something wrong with the program code?
This is only observed in the MT5 terminal, it is not observed in MT4.