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Compute Simple Moving Average (SMA) In TypeScript?

9 minutes read

To compute Simple Moving Average (SMA) in TypeScript, you need to first define the period for which you want to calculate the average. Next, create an array to store the values for which you want to find the average. Iterate through the array and calculate the sum of the values within the defined period. Divide this sum by the period to get the SMA for that particular point. Update the array by removing the oldest element and adding the newest element at each iteration to keep track of the moving average. Repeat this process until you have calculated the SMA for all points in the array.

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How to plot SMA on a graph using TypeScript libraries?

To plot a Simple Moving Average (SMA) on a graph using TypeScript libraries, you can use a popular charting library like Chart.js or D3.js. Here is an example using Chart.js:

  1. First, install Chart.js via npm:
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npm install chart.js


  1. Create a new TypeScript file (for example, sma-chart.ts) and import Chart.js:
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import Chart from 'chart.js';


  1. Create a canvas element in your HTML file where you want to display the chart:
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<canvas id="smaChart" width="400" height="200"></canvas>


  1. In your TypeScript file, write the logic to calculate the SMA and plot it on the chart:
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const ctx = document.getElementById('smaChart') as HTMLCanvasElement;
const smaChart = new Chart(ctx, {
   type: 'line',
   data: {
      labels: ['January', 'February', 'March', 'April', 'May', 'June', 'July'],
      datasets: [{
         label: 'SMA',
         data: [10, 15, 13, 18, 12, 19, 20],
         borderColor: 'blue',
         borderWidth: 1
      }]
   },
   options: {
      scales: {
         yAxes: [{
            ticks: {
               beginAtZero: true
            }
         }]
      }
   }
});

function calculateSMA(data: number[], period: number): number[] {
   const sma: number[] = [];
   for (let i = 0; i < data.length - period + 1; i++) {
      let sum = 0;
      for (let j = i; j < i + period; j++) {
         sum += data[j];
      }
      sma.push(sum / period);
   }
   return sma;
}

// Calculate SMA with a period of 3
const inputData = [10, 15, 13, 18, 12, 19, 20];
const sma = calculateSMA(inputData, 3);

// Update chart with SMA
smaChart.data.datasets.push({
   label: 'SMA',
   data: sma,
   borderColor: 'green',
   borderWidth: 1
});
smaChart.update();


  1. Finally, compile your TypeScript file:
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tsc sma-chart.ts


  1. Open your HTML file in a browser to view the chart with SMA plotted on it.


This is just a basic example to get you started. You can customize the chart further by adding more options and features provided by the Chart.js library.


How to calculate SMA on real-time streaming data in TypeScript?

To calculate the Simple Moving Average (SMA) on real-time streaming data in TypeScript, you can use the following code snippet as an example:

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class SMA {
  private values: number[];
  private period: number;
  private sum: number;

  constructor(period: number) {
    this.values = [];
    this.period = period;
    this.sum = 0;
  }

  update(value: number): number {
    this.values.push(value);
    this.sum += value;

    if (this.values.length > this.period) {
      this.sum -= this.values.shift();
    }

    return this.sum / Math.min(this.values.length, this.period);
  }
}

// Example of using SMA class
const sma = new SMA(5); // Calculate SMA over a period of 5

// Simulate real-time streaming data
const dataStream = [10, 20, 30, 25, 35, 50, 45, 40, 55];

for (const data of dataStream) {
  const smaValue = sma.update(data);
  console.log("Current SMA:", smaValue);
}


In this code snippet, we define a SMA class that calculates the Simple Moving Average over a specified period. The update method is used to update the SMA value with new data points in real-time streaming.


To use the SMA class, you can create an instance of it with the desired period (e.g., 5 in this example). Then, you can update the SMA value with new data points as they arrive in real-time using the update method.


You can customize this code snippet based on your specific requirements and data structure.


How to adjust SMA parameters for better predictions in TypeScript?

To adjust the Simple Moving Average (SMA) parameters for better predictions in TypeScript, you can follow these steps:

  1. Determine the timeframe: The timeframe for calculating the SMA can greatly impact the accuracy of predictions. Consider adjusting the timeframe based on the frequency of your data and the specific patterns you are trying to capture.
  2. Experiment with different window sizes: The window size refers to the number of data points used to calculate the SMA. You can adjust the window size to capture shorter or longer-term trends in the data. Experiment with different window sizes to see which one provides the best predictions for your data.
  3. Consider using multiple SMAs: You can improve prediction accuracy by using multiple SMAs with different window sizes. For example, you can use a shorter-term SMA along with a longer-term SMA to capture both short-term fluctuations and longer-term trends in the data.
  4. Combine SMA with other indicators: To improve prediction accuracy, consider combining the SMA with other technical indicators such as the Relative Strength Index (RSI) or Moving Average Convergence Divergence (MACD). By using multiple indicators together, you can better capture the various aspects of the data and improve prediction accuracy.
  5. Use machine learning techniques: If you are working with a large dataset, consider using machine learning techniques to optimize the SMA parameters for better predictions. Machine learning algorithms can help you identify the most effective parameters for your specific data and improve prediction accuracy.


Overall, adjusting SMA parameters for better predictions in TypeScript involves experimenting with different timeframes, window sizes, and combinations with other indicators, as well as considering the use of machine learning techniques for optimization. By carefully tuning these parameters, you can improve the accuracy of your predictions and make more informed decisions based on your data.


How to implement SMA in TypeScript for stock market data?

To implement Simple Moving Average (SMA) in TypeScript for stock market data, you can follow these steps:

  1. Create a class for calculating SMA:
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class SMA {
  private period: number;
  private prices: number[];

  constructor(period: number, prices: number[]) {
    this.period = period;
    this.prices = prices;
  }

  calculate(): number[] {
    let smaValues: number[] = [];
    
    for (let i = this.period - 1; i < this.prices.length; i++) {
      let sum = 0;
      for (let j = i - this.period + 1; j <= i; j++) {
        sum += this.prices[j];
      }
      let sma = sum / this.period;
      smaValues.push(sma);
    }
    
    return smaValues;
  }
}


  1. Create an instance of the SMA class with the desired period and stock prices array:
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const period = 20; // Change this to the desired period for SMA
const prices = [100, 105, 110, 115, 120, 125, 120, 115, 110, 105]; // Change this to the stock prices array

const sma = new SMA(period, prices);
const smaValues = sma.calculate();

console.log(smaValues);


  1. Run the TypeScript code using a TypeScript compiler like tsc to transpile it into JavaScript and then execute the resulting JavaScript file.


This is a simple implementation of SMA in TypeScript for stock market data. You can further enhance it by adding error handling, optimizing the calculation logic, and using real-time stock market data sources.


How to calculate SMA using TypeScript code?

SMA (Simple Moving Average) can be calculated in TypeScript by summing up a specific number of data points and then dividing it by the total number of data points.


Here is some TypeScript code to calculate SMA:

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function calculateSMA(data: number[], period: number): number {
    let sum = 0;
    for (let i = 0; i < period; i++) {
        sum += data[i];
    }
    
    return sum / period;
}

const data = [10, 15, 20, 25, 30, 35, 40, 45, 50, 55];
const period = 5;

const sma = calculateSMA(data, period);
console.log(`SMA for period ${period}: ${sma}`);


In this code, data is an array of numbers representing the data points for which we want to calculate the SMA. period is the number of data points to consider when calculating the SMA. The calculateSMA function takes these inputs and returns the SMA value.


You can replace the data array with your own dataset and adjust the period variable to calculate the SMA for different periods.

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