How do I calculate r-squared using Python and Numpy?
I’m using Python and Numpy to calculate a best fit polynomial of arbitrary degree. I pass a list of x values, y values, and the degree of the polynomial I want to fit (linear, quadratic, etc.).
math
Integer division by negative number
I was asked (again) today to explain why integer division in Python returns the floor of the result instead of truncating towards zero like C.
Cubic root of the negative number on python
Can someone help me to find a solution on how to calculate a cubic root of the negative number using python?
numpy arbitrary precision linear algebra
I have a numpy 2d array [medium/large sized – say 500×500]. I want to find the eigenvalues of the element-wise exponent of it. The problem is that some of the values are quite negative (-800,-1000, etc), and their exponents underflow (meaning they are so close to zero, so that numpy treats them as zero). Is there anyway to use arbitrary precision in numpy?
Euclidean algorithm (GCD) with multiple numbers?
So I’m writing a program in Python to get the GCD of any amount of numbers.
Efficiently detect sign-changes in python
I want to do exactly what this guy did:
What do these operators mean (** , ^ , %, //)?
Other than the standard +, -, *and / operators; but what does these mean (** , ^ , %, //) ? >>> 9+float(2) # addition 11.0 >>> 9-float(2) # subtraction 7.0 >>> 9*float(2) # multiplication 18.0 >>> 9/float(2) # division 4.5 >>> >>> 9**float(2) # This looks like a square, (i.e. power 2) 81.0 >>> … Read more
How do I find the distance between two points?
Let’s say I have x1, y1 and also x2, y2. How can I find the distance between them? It’s a simple math function, but is there a snippet of this online? Answers: Thank you for visiting the Q&A section on Magenaut. Please note that all the answers may not help you solve the issue immediately. … Read more
How to get all combination of n binary value?
In Python, how can I get all combinations of n binary values 0 and 1? For example, if n = 3, I want to have [ [0,0,0], [0,0,1], [0,1,0], [0,1,1], … [1,1,1] ] #total 2^3 combinations How can I do this? Answers: Thank you for visiting the Q&A section on Magenaut. Please note that all … Read more