Calc: Highlight Even or Odd Rows Quickly

I often like to highlight even or odd rows in a spreadsheet in order to make it easier to read. This can become labor intensive when you have a lot of data. Today, I am going to show you how to do it quickly in LibreOffice’s Calc program.

PHP Thumbnails on the Fly

In the MegaGallery project, we used the EXIF library in PHP to extract the thumbnails from the image itself. However, what do we do if we do not have EXIF installed or available through our web server provider? One possibility is to use the GD library. The GD library will allow us to create a thumbnail using the image itself.

Outlined Text in GIMP

For my second screencast, I will show you one technique for create an outline around you text in GIMP.

Outlined Text in GIMP by E. E. Perry on Vimeo

Mathematics Guide

I have recently been refreshing my knowledge of mathematics. In the process, I created a guide for personal use mostly; however, I thought some others might find it useful. It covers mathematics topics from algebra to trigonometry.

Resizing Images

Quite often, in programming and dealing with images, it becomes necessary to resize the image without distorting its aspect ratio. Since the width and height of an image is a ratio, we can use the fundamental rule of proportions to resize the image.