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javatrigonometrylabview

re/im to polar in java like in labview

I usually programmed on labview programming language but now I want to rewrite some functions from labview to java especially re/im to polar and polar to re/im. I didn't find any information about this. So how can I write them on java? Thanks!

Solution

  • It is not so difficult. As you can see here https://zone.ni.com/reference/en-XX/help/371361R-01/glang/re_im_to_polar/ it is just simple trigonometry functions like arctan2, cos and sin

    public float[] ReImToPolar(float x, float y)
    {
        float[] arr = new float[2];
        arr[0] = (float)Math.sqrt((x * x + y * y));  // r
        arr[1] = (float)Math.atan2(y, x);  // theta
        return arr;
    }

public float[] PolarToReIm(float r, float theta)
    {
        float[] arr = new float[2];
        arr[0] = r * (float)Math.cos(theta);  // x
        arr[1] = r * (float)Math.sin(theta);  // y
        return arr;
    }