Images, even if they are big or small are usually full of colour. However, in certain situations you may want to check if an image is indeed grayscale or not. You can do this using PHP and its image manipulation functions. ...

You probably already know how to do standard graphs in Excel. Sometimes, you'll need to take it up another level and do logarithmical or semi-logarithmical graphs. Properly made graphs can give a concise and compact form of representation, while graphs made poorly can be misleading and very confusing. ...

How many times did you lose your settings, bookmarks or even emails by reinstalling your operating system or simply reinstalled your Mozilla browser/email manager? Now you can no longer worry about losing anything! ...

If you are studying engineering or science, sooner or later, you will need to learn how to use Matlab, a programming language which allows easy manipulation of numerical data and implementation of algorithms. This tutorial will help you understand the basic syntax and data types used by the language. ...

Although converting an image (usually in true color) to grayscale can sound like a simple operation if you are used to image processing software, PHP doesn't have a function for this conversion by default. ...