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Tag: arrays

How to slice and calculate the pearson correlation coefficient between one big and small array with “overlapping” windows arrays

Suppose I have two very simple arrays with numpy: I would like to find which slice of array reference has the highest pearson’s correlation coefficient with array probe. To do that, I would like to slice the array reference using some sort of sub-arrays that are overlapped in a for loop, which means I shift one element at a time

New list based on indices from another list in Python

I have an array X and a list A1. I want to create a new list B1 such that it consists of values from X corresponding to indices in A1. For example, the code should pick values from X[0] for indices in A1[0] and so on…I present the current and expected outputs. The current output is The expected output is

Transform a 3D numpy array to 1D based on column value

Maybe this is a very simple task, but I have a numpy.ndarray with shape (1988,3). I want to create a 1D array with shape=(1988,) that will have values corresponding to the column of my 3D array that has a value of 1. For example, How can I do this? Answer You can use numpy.nonzero: Output: array([0, 1, 2, 1, 0,

Nested arrays in Avro

I would like to store two-dimensional arrays of numbers in Avro. I have tried the following: But when I tried to read it with the parser: I get the following error: Answer It looks like you have one too many type keys. You schema should be this instead: