Logarithmic space

Question

Does anyone have a method to generate a logarithmically spaced number array. The method signature would be:

public static List<double> logSpace (double start, double end, double numValues)

This is similar to matlab function 'logspace'

why closed? to me question and answer are helpful. it was the first result on my google search. — Goswin Rothenthal, Nov 30 '17 at 14:52

score 4 · Answer 1 · answered May 10 '13 at 21:27

I'm not familiar with matlab, but it sounds like you're looking for something like this:

public IEnumerable<double> logspace(double start, double end, int count)
{
    double d = (double)count, p = end/start;
    return Enumerable.Range(0, count).Select(i => start * Math.Pow(p, i/d));
}

logspace(0.1, 1, 10); // 0.1, 0.13, 0.16, 0.2, 0.25, 0.32, 0.4, 0.5, 0.63, 0.79

Logarithmic space

1 Answers1