2D Arithmetic
2D numpy arrays can perform calculations element by element, like numpy arrays.
np_baseball is coded for you; it's again a 2D numpy array with 3 columns representing height (in inches), weight (in pounds) and age (in years). baseball is available as a regular list of lists and updated is available as 2D numpy array.
This exercise is part of the course
Introduction to Python
Exercise instructions
- You managed to get hold of the changes in height, weight and age of all baseball players. It is available as a 2D
numpyarray,updated. Addnp_baseballandupdatedand print out the result. - You want to convert the units of height and weight to metric (meters and kilograms, respectively). As a first step, create a
numpyarray with three values:0.0254,0.453592and1. Name this arrayconversion. - Multiply
np_baseballwithconversionand print out the result.
Hands-on interactive exercise
Have a go at this exercise by completing this sample code.
import numpy as np
np_baseball = np.array(baseball)
# Print out addition of np_baseball and updated
# Create numpy array: conversion
# Print out product of np_baseball and conversion