Double SMA Indicator

This algorithm is a custom indicator for MetaTrader 5 (MT5) that plots two simple moving averages (SMA) on a financial chart to assist in the technical analysis of price movements. Here's what the algorithm does:

1. Two Simple Moving Averages (SMA):

   • The indicator uses two different SMA periods:
     • The first SMA (SMA1) has a longer period, set to 8 periods by default (SMA 8).
     • The second SMA (SMA2) has a shorter period, set to 3 periods by default (SMA 3).

2. Calculation of the Moving Averages:

   • For each defined period, it calculates the average of the closing prices of the previous candles over a certain number of periods.
   • For example, for SMA8, the algorithm adds up the closing prices of the last 8 candles and divides the sum by 8 to get the moving average value.

3. Visual Display:

   • It plots two lines on the chart:
     • A blue line for SMA8 (longer period).
     • A red line for SMA3 (shorter period).
   • The lines have a thickness of 2 pixels for better visibility.

4. Purpose of the Indicator:

   • This indicator helps traders visualize short- and medium-term price trends by comparing the two moving averages. When the red line (SMA3) crosses above or below the blue line (SMA8), it can be interpreted as a trading signal:
     • An upward crossover of the red line above the blue line can indicate a buy signal.
     • A downward crossover can indicate a sell signal.

In summary:

This algorithm is a double SMA indicator used to identify trends or trading signals based on the crossovers of simple moving averages with different periods (8 and 3).