NumPy cookbook / / Ivan Idris

• Record Nr.: UNINA9910957689903321
• Autore: Idris Ivan
• Pubbl/distr/stampa: Birmingham, [Eng.], : Packt Publishing, 2012
• ISBN: 9781283739047; 1283739046; 9781849518932; 1849518939
• Edizione: [1st ed.]
• Descrizione fisica: 1 online resource (226 p.)
• Disciplina: 006.76
• Soggetti: Python (Computer program language); Numerical analysis - Data processing
• Lingua di pubblicazione: Inglese
• Formato: Materiale a stampa
• Livello bibliografico: Monografia
• Note generali: Includes index.
• Nota di contenuto: Cover; Copyright; Credits; About the Author; About the Reviewers; www.PacktPub.com; Table of Contents; Preface; Chapter 1:Winding Along with IPython; Introduction; Installing IPython; Using IPython as a shell; Reading manual pages; Installing Matplotlib; Running a web notebook; Exporting a web notebook; Importing a web notebook; Configuring a notebook server; Exploring the SymPy profile; Chapter 2:Advanced Indexing and Array Concepts; Introduction; Installing SciPy; Installing PIL; Resizing images; Creating views and copies; Flipping Lena; Fancy indexing; Indexing with a list of locations; Indexing with booleansStride tricks for Sudoku; Broadcasting arrays; Chapter 3:Get to Grips with Commonly Used Functions; Introduction; Summing Fibonacci numbers; Finding prime factors; Finding palindromic numbers; The steady state vector determination; Discovering a power law; Trading periodically on dips; Simulating trading at random; Sieving integers with the Sieve of Erasthothenes; Chapter 4:Connecting NumPy with the Rest of the World; Introduction; Using the buffer protocol; Using the array interface; Exchanging data with MATLAB and Octave; Installing RPy2; Interfacing with R; Installing JPypeSending a NumPy array to JPype; Installing Google App Engine; Deploying NumPy code in the Google cloud; Running NumPy ; code in a Python Anywhere web console; Setting up PiCloud; Chapter 5:Audio and Image Processing; Introduction; Loading images into memory map; Combining images; Blurring images; Repeating audio fragments; Generating sounds; Designing an audio filter; Edge detection with the Sobel filter; Chapter 6:Special Arrays and Universal Functions; Introduction; Creating a universal function; Finding Pythagorean triples; Performing string operations with chararray; Creating a masked arrayIgnoring negative and extreme values; Creating a scores table with recarray; Chapter 7:and Debugging; Introduction; Profiling with timeit; Profiling with IPython; Installing line_profiler; Profiling code with line_profiler; Profiling code with the cProfile extension; Debugging with IPython; Debugging with pudb; Chapter 8:Quality Assurance; Introduction; Installing Pyflakes; Performing static analysis with Pyflakes; Analyzing code with Pylint; Performing static analysis with Pychecker; Testing code with docstrings; Writing unit tests; Testing code with mocks; Testing the BDD wayChapter 9:Speed Up Code with Cython; Introduction; Installing Cython; Building a Hello World program; Using Cython with NumPy; Calling C functions; Profiling Cython code; Approximating factorials with Cython; Chapter 10:Fun with Scikits; Introduction; Installing scikits-learn; Loading an example dataset; Clustering Dow Jones stocks with scikits-learn; Installing scikits-statsmodels; Performing a normality test with scikits-statsmodels; Installing scikits-image; Detecting corners; Detecting edges; Installing Pandas; Estimating stock returns correlation with Pandas; Loading data as pandas objects from statsmodels
• Sommario/riassunto: Written in Cookbook style, the code examples will take your Numpy skills to the next level. This book will take Python developers with basic Numpy skills to the next level through some practical recipes.