{% assign title = "Procedure Loop" %} {% assign definition = site.data.data_mine.procedure_loop %} {% assign preposition = "a" %} {% assign plural = "s" %} {% if include.more == "yes" and include.heading == "more" %}

Click to learn more about {{ title | downcase }}{{plural}}

{% endif %} {% if include.heading != "" and include.heading != "more" %} {{include.heading}} {{title}} {% endif %} {% if include.icon != "no" %} {% if include.table == "yes" and include.icon != "no" %}

{% endif %} {% if include.table == "yes" and include.icon != "no" %}

{% endif %} {% endif %} {% if include.definition == "bold" %} {{ definition }} {% else %} {% if include.definition != "no" %} {{ definition }} {% endif %} {% endif %} {% if include.table == "yes" and include.icon != "no" %}

{% endif %} {% if include.more == "yes" and include.content == "more" and include.heading != "more" %}

Click to learn more about {{ title | downcase }}{{plural}}

{% endif %} {% if include.content != "no" %} This is an example of a procedure loop code snippet, in particular, the code that calculates the Popular SMAs product of the Simple Moving Average (SMA) indicator. {% include important.html content="Calculation procedures may only access data up to 48 hours in the past counting from the datetime of the record being processed. For that reason, the calculation of a moving average requires temporarily storing data in an array." %} ```js /* Loop Code. */ let candle = record.current // Our main dependencies are candles variable.last200.push(candle.close) // Add the current close value to the last 200 array. if (variable.last200.length > 200) { variable.last200.splice(0, 1) // Remove the first element of the array to keep it at a maximun of 200 elements. } variable.sma20 = calculateSMA(20) variable.sma50 = calculateSMA(50) variable.sma100 = calculateSMA(100) variable.sma200 = calculateSMA(200) function calculateSMA(periods) { // Having a function saves us from duplicating code. /* We check we have enough values to make the calculation */ if (variable.last200.length < periods) { return 0 } // If we dont, we define the value is zero. let sum = 0 // Initialize sum variable. for (let i = variable.last200.length - periods; i < variable.last200.length; i++) { // Iterate through the last periods sum = sum + variable.last200[i] } let sma = sum / periods return sma } ``` {% endif %} {% if include.more == "yes" and include.content != "more" and include.heading != "more" %}

Click to learn more about {{ title | downcase }}{{plural}}

{% endif %} {% if include.adding != "" %} {{include.adding}} Adding {{preposition}} {{title}} Node To add a procedure loop, select *Add Procedure loop* on the corresponding procedure node menu. A procedure loop node is created along with the corresponding JavaScript node. {% endif %} {% if include.configuring != "" %} {{include.configuring}} Configuring the {{title}} XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX {% endif %} {% if include.starting != "" %} {{include.starting}} Starting {{preposition}} {{title}} XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX {% endif %} {% if include.more == "yes" %}

{% endif %}