My indicator is not displaying on Chart any idea the missing component?

[Bernard Fiagbe]

#property indicator_chart_window
#property indicator_buffers 2
#property indicator_color1 Yellow
#property indicator_color2 Yellow
#property indicator_width1 2
#property indicator_width2 2
// Input parameters
input int RsiPeriod = 14;
// Indicator buffers
double ResistanceBuffer[];
double SupportBuffer[];
//+------------------------------------------------------------------+
//| Custom indicator initialization function                         |
//+------------------------------------------------------------------+
int OnInit()
{
    // Set the indicator buffers
    SetIndexBuffer(0, ResistanceBuffer);
    SetIndexBuffer(1, SupportBuffer);
    // Set the indicator labels
    PlotIndexSetString(0, PLOT_LABEL, "Resistance");
    PlotIndexSetString(1, PLOT_LABEL, "Support");
    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[])
{
    // Calculate the RSI values
    double rsiBuffer[];
    ArrayResize(rsiBuffer, rates_total);
    //int rsiCount = iRSI(NULL, 0, RsiPeriod, PRICE_CLOSE, rsiBuffer);
    int rsiCount = iRSI(NULL, 0, RsiPeriod, PRICE_CLOSE);
    // Find strong resistance and support zones
    int resistanceCount = 0;
    int supportCount = 0;
    for (int i = 1; i < rsiCount - 1; i++)
    {
        if (rsiBuffer[i] >= 70 && rsiBuffer[i - 1] < 70)
        {
            resistanceCount++;
            ResistanceBuffer[resistanceCount] = high[i];
        }
        else if (rsiBuffer[i] <= 30 && rsiBuffer[i - 1] > 30)
        {
            supportCount++;
            SupportBuffer[supportCount] = low[i];
        }
        else
        {
            ResistanceBuffer[i] = 0.0;
            SupportBuffer[i] = 0.0;
        }
    }
    // Remove the remaining values from the buffer
    for (int i = resistanceCount + 1; i < rates_total; i++)
    {
        ResistanceBuffer[i] = 0.0;
    }
    for (int i = supportCount + 1; i < rates_total; i++)
    {
        SupportBuffer[i] = 0.0;
    }
    return rates_total;
}

[Gerard William G J B M Dinh Sy]

Good morning
Obviously you are trying to make an RSI with the marked thresholds.

I made two codes
One with the irsi function and the other without the function, more difficult for beginners but should provide answers

Free download of the 'Rsi code for beginners by William210' indicator by 'William210' for MetaTrader 5 in the MQL5 Code Base, 2023.08.30

And

Free download of the 'Rsi without Irsi() code for beginners by William210' indicator by 'William210' for MetaTrader 5 in the MQL5 Code Base, 2023.09.21

Consider putting stars for SEO, thank you

[Fernando Carreiro]

Your topic has been moved to the section: Technical Indicators
Please consider which section is most appropriate — https://www.mql5.com/en/forum/172166/page6#comment_49114893

[William Roeder]

Bernard Fiagbe:

#property indicator_chart_window
#property indicator_buffers 2

How many plots?

[Fernando Carreiro]

The indicator functions, like iRSI(), return a handle in MQL5, not a count.

It should also be obtained in the OnInit() handler and then used later with CopyBuffer() to get the indicator buffer contents.

Please refer to the documentation for more information and examples.

[Tobias Johannes Zimmer]

William Roeder #:

How many plots?

No plots here just buffers

[Amir Yacoby]

Tobias Johannes Zimmer #:
No plots here just buffers

Plot is what is displayed graphically