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Confusion about inner product function

I am studying in the documentation, the inner product function : https://www.mql5.com/en/docs/matrix/matrix_products/matrix_inner I struggled understanding the logic because my results differed from those of the example. It seemed in this example that the rows are multiplied with the rows, rather

Bug report - Optimizer stops plotting dots after closing windows

Just to tell a not so grave bug i have had for a while now : in the tester, when optimizing some parameters of an EA, dots results are being plotted on a window, the bug is : if you close some window in the background, the current window stops displaying dots results. Even the optimization

Can't create a CSV file from terminal

I am not able, from Meta Editor, to open/create a CSV file to write in it. The code made in this purpose doesn't return any error or warning, filehandle=1; LastError=0; but still I don't see any CSV file being created afterward in the destination subfolder. void OnDeinit ( const int reason) {

Why is the RSI value never equal to 0 nor 100 ?

Evening, I am trying to apply the RSI formula to another indicator instead of the price, and i have an issue understanding the value it takes. Here is the official formula : //--- calculate first visible value ExtPosBuffer[ExtPeriodRSI]=sum_pos/ExtPeriodRSI;

Backtesting on XM MT5 vagueness bug ?

Hey, ive developped a simple EA based on ema's cross-over strategy and, even if i noticed a good efficiency reading these indicators on live market, ive tested my EA on XM MT5 with the backtesting to figure out that the results are pretty bad, because of opening trades when it shouldn't be the case