What does it mean to solve something numerically?

Solving something numerically means you use approximations that make a problem easier to solve. Generally it refers to the difficulty of solving problems mathematically that give you the exact answer, or trying to get approximate answers using techniques that involve numeric approximations, that allow you to get close to the solution sooner or more easily. … Read more

How can I use numpy.correlate to do autocorrelation?

To answer your first question, numpy.correlate(a, v, mode) is performing the convolution of a with the reverse of v and giving the results clipped by the specified mode. The definition of convolution, C(t)=∑ -∞ < i < ∞ aivt+i where -∞ < t < ∞, allows for results from -∞ to ∞, but you obviously can’t store an infinitely long array. So it has to … Read more