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Signal Processing Techniques

by Ivan Idris | June 2014 | Open Source

In this article by Ivan Idris, author of Learning NumPy Array, we will learn about some signal-processing techniques, and we will analyze time-series data with these. As example data, we will use the sunspot data provided by a Belgian scientific institute. We can download this data from several places on the Internet, and it is also provided as sample data by the statsmodels library. There are a number of things we can do with the data, such as:

  • Trying to determine periodic cycles within the data. This can be done, but this is a bit advanced, so we will just get you started.

  • Smoothing the data to filter out noise.

  • Forecasting.

Read Signal Processing Techniques in full

Unleashing the powers of Lumion

by Ciro Cardoso | June 2014 | Open Source

This article is written by Ciro Cardoso, the author of Lumion 3D Cookbook. With this article, we will deliver the best of what Lumion has to offer and how to use Lumion's intuitive and powerful tools for bringing your visions to life. While reading this article, you will be taken through a wide variety of topics that will help you improve your workflow and your project's quality. You will start with some basic notions that will ensure that you start a project with the right foot. You will find that Lumion will not only help you set up a solid and well-organized project, but also increase the quality and detail of the still image or movie that you'll produce.

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Working with Live Data and AngularJS

by Josh Kurz | June 2014 | Open Source Web Development

In this article by Josh Kurz, author of Mastering AngularJS Directives, we will learn about live data and AngularJS.

Read Working with Live Data and AngularJS in full

The anatomy of a report processor

by Michael Duffy | June 2014 | Open Source

This article by Michael Duffy, the author of Puppet Reporting and Monitoring, describes the anatomy of a report processor and how to create a report processor.

Read The anatomy of a report processor in full

Building a Web Application with PHP and MariaDB – Introduction to caching

by Sai Srinivas Sriparasa | June 2014 | Open Source Web Development

In this article by Sai Srinivas Sriparasa, author of the book Building a Web Application with PHP and MariaDB: A Reference Guide, we'll learn how caching can be defined as the process of making popular data highly available by temporarily storing the data in memory that allows responding to a request faster by retrieving data from the memory rather than going onto the disk. There are three types of caching, as follows:

  • Caching in the database
  • Caching in the application
  • Content caching
Read Building a Web Application with PHP and MariaDB – Introduction to caching in full
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