The real author:

WizardSerg

The SlopeDirectionLine trend indicator with the ability to change the algorithms of averaging and triggering alerts, push notifications and sending e-mail messages.

Indicator input parameters:

//+-----------------------------------+
//| Indicator input parameters        |
//+-----------------------------------+
input Smooth_Method MA_Method1=MODE_LWMA; // First smoothing method
input uint Length1=12;                    // First smoothing depth                
input int Phase1=15;                      // First smoothing parameter
//--- Phase1: for JJMA that can change withing the range -100 ... +100. It impacts the quality of the intermediate process of smoothing;
//--- Phase1: for VIDIA, it is a CMO period, for AMA, it is a slow moving average period
input Smooth_Method MA_Method2=MODE_SMA;  // Second smoothing averaging method
input int Phase2=15;                      // Second smoothing parameter
//---Phase2: for JJMA that can change withing the range -100 ... +100. It impacts the quality of the intermediate process of smoothing;
//---Phase2: for VIDIA, it is a CMO period, for AMA, it is a slow moving average period
input Applied_price_ IPC=PRICE_CLOSE;     // Price constant
input int Shift=0;                        // Horizontal shift of the indicator in bars
input int PriceShift=0;                   // Vertical shift of the indicator in points
input bool On_Push = false;                           // Allow to send push-messages
input bool On_Email = false;                          // Allow to send e-mail messages
input bool On_Alert = true;                           // Allow to put alert
input bool On_Play_Sound = false;                     // Allow to put sound signal
input string NameFileSound = "expert.wav";            // Name of the file with sound
input string  CommentSirName="SlopeDirectionLine: ";  // The first part of the alert comment
input uint SignalBar=1;                               // Bar index for getting an entry signal

The indicator uses SmoothAlgorithms.mqh library classes (must be copied to the terminal_data_folder\MQL5\Include). The use of the classes was thoroughly described in the article "Averaging price series for intermediate calculations without using additional buffers".

Fig.1 The SlopeDirectionLine indicator