NumPy

Reference NumPy numpy.random.rand() Function The numpy.random.rand() function generates an array of specified shape with random values. ↗ How-tos One-Hot Encoding on NumPy Array in Python This tutorial demonstrates how to perform one-hot encoding on a numpy array in python ↗ How-tos How to Convert Matrix to Array in NumPy Convert a Python matrix to a NumPy array, keep its two-dimensional shape, or flatten it to one dimension with np.asarray(), np.array(), flatten(), ravel(), or reshape(-1). ↗ How-tos How to Multiply Array With Scalar in Python Learn how to multiply every element of a NumPy array by a scalar in Python with either the * operator or numpy.multiply(). See runnable examples and how broadcasting applies. ↗ How-tos How to Remove Elements From Array in NumPy Learn how to remove NumPy array elements by position with numpy.delete() or by value with numpy.setdiff1d(). ↗ How-tos Cosine of Degree Values in NumPy This tutorial demonstrates how to find cosine values for degrees in NumPy. Learn to efficiently calculate cosine values using built-in functions and custom methods, making your … ↗ How-tos NumPy Array Equal Compare NumPy arrays element by element, for exact whole-array equality, with broadcasting equivalence, or within a numeric tolerance. ↗ How-tos NumPy Intersection of Two Arrays Discover how to find the intersection of two 1-dimensional arrays in Python using NumPy. This guide explores the numpy.isin() and numpy.intersect1d() methods, providing clear … ↗ How-tos Overflow Encountered in numpy.exp() Function in Python Learn how to handle overflow errors in the numpy.exp() function in Python. This article provides practical methods, including clipping input values, using logarithmic functions, … ↗ How-tos How to Convert NumPy Array to Tuple Learn how to convert a NumPy array to a tuple in Python using tuple() and map(), with examples for one-dimensional and two-dimensional arrays. ↗ How-tos How to Delete Row in NumPy Learn how to delete rows from a NumPy array by index or condition. See how numpy.delete() uses axes and returns a new array, with examples for one row, multiple rows, and boolean … ↗ How-tos How to NumPy Shuffle Two Arrays There are three main methods that can be used to shuffle two corresponding arrays in Python, the sklearn.utils.shuffle() function, the numpy.random.shuffle() function, and the … ↗ How-tos How to Convert Between `datetime.datetime`, `np.datetime64`, and `pd.Timestamp` Convert among Python datetime.datetime, NumPy datetime64, and pandas Timestamp with direct examples and notes on timezone and precision. ↗ How-tos NumPy Unit Vector Learn how to normalize NumPy arrays to unit vectors in Python using two effective methods: the numpy.linalg.norm() function and a self-defined approach. This comprehensive guide … ↗ Reference Python numpy.argmax() The numpy.argmax() function returns the indices of values with the highest values in the given NumPy array. ↗ How-tos How to Convert 3D Array to 2D Array in Python Learn how to convert a 3D array to a 2D array in Python using the reshape() function from the NumPy library. This article provides practical examples and detailed explanations to … ↗ How-tos How to Transpose a 1D Array in NumPy Learn how to transpose a 1D NumPy array in Python by reshaping it into a 2D format. This article covers practical methods using NumPy's reshape and newaxis functions, providing … ↗ How-tos How to Reverse a NumPy Array in Python Reverse a NumPy array in Python with basic slicing, numpy.flipud(), or numpy.flip(), and choose the method by view and axis behavior. ↗ How-tos Element-Wise Division in Python NumPy Discover how to perform element-wise division in Python using NumPy. Learn about the two main methods: numpy.divide() function and the / operator. This article provides clear … ↗ How-tos How to Convert Pandas Series to NumPy Array Convert the values of a pandas Series to a NumPy array with Series.to_numpy(), and choose compatible alternatives while keeping the index separate. ↗ Reference NumPy where(): Find Indices or Select Values Use numpy.where(condition) to find matching indices, or numpy.where(condition, x, y) to select values from x and y element by element. ↗ How-tos How to Write NumPy Array to CSV in Python This tutorial demonstrates how to save a NumPy array in a CSV file using Python. Learn different methods, including NumPy's `savetxt`, Pandas DataFrame, and the CSV module. Follow … ↗ How-tos How to Find the First Index of Element in NumPy Array Learn how to find the first matching index in a NumPy array with np.where(), np.nonzero(), np.argmax(), list.index(), and a loop. ↗ How-tos Covariance in Python NumPy Calculate covariance in Python with numpy.cov(): what covariance means, a worked two-array example, the difference between sample and population normalization (bias/ddof), and how … ↗