Vector images handle the data a little differently, giving you more sizing flexibility because they contain no pixel information. A vector file contains a set of mathematical information telling the computer how to assemble the image. On the most basic level, the instructions contain the description of the path. The path is defined as the distance between two nodes--nodes being the starting and ending points of a line. We will study these in more depth at a later time.
For this course we will be using only the bitmap (raster) type images unless instructed to do otherwise.