Determining the slope of an exponential moving average

[Herbert20]

Hello community. I am currently coding an ea which will allow me to know if the market base line of the TDI indicator (trading dynamic index) which is an exponential moving average is inclined downwards or upwards. In my research I saw that I could use the slope which, if positive, means that the MA is upwards, and if negative, that it is downwards. Here's the code:

double CalculateMAslope(const double& ma[], const int period)
{
    double sum_x = 0.0;
    double sum_y = 0.0;
    double sum_x2 = 0.0;
    double sum_xy = 0.0;

    for (int i = period - 1; i >= 0; i--)
    {
        double x = i;
        double y = ma[i];
        sum_x += x;
        sum_y += y;
        sum_x2 += x * x;
        sum_xy += x * y;
    }

    double slope = (period * sum_xy - sum_x * sum_y) / (period * sum_x2 - sum_x * sum_x);

    return slope;

}

Improperly formatted code edited by moderator.

After testing, I've found that this isn't at all the case in practice. I have positive slopes but visually the Market Base line is tilted downwards. I need your help to explain to me how to go about determining the slopes so that the results given in the terminal reflect those seen on the graph. Thank you 

[Dominik Egert]

Herbert20: Hello community. I am currently coding an ea which will allow me to know if the market base line of the TDI indicator (trading dynamic index) which is an exponential moving average is inclined downwards or upwards. In my research I saw that I could use the slope which, if positive, means that the MA is upwards, and if negative, that it is downwards. Here's the code: After testing, I've found that this isn't at all the case in practice. I have positive slopes but visually the Market Base line is tilted downwards. I need your help to explain to me how to go about determining the slopes so that the results given in the terminal reflect those seen on the graph. Thank you 

Find your answer here: https://www.mql5.com/en/forum/219495

[Fernando Carreiro]

Herbert20: 

Improperly formatted code edited by moderator.

In the future, please use the CODE button (Alt-S) when inserting code.

[Fernando Carreiro]

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

[Herbert20]

Dominik Egert #:

Find your answer here: https://www.mql5.com/en/forum/219495

okay thanks