Images made with drawing packages consist of lines, shapes and co-ordinates. Drawing packages are also known as vector drawing packages. Generally a drawing package offers many similar features to a painting.
Vector graphics are based on mathematical relationships with control points that make up the image, information is not stored about each pixel [pixels: tiny dots that together form an image ]. These points are connected by lines and curves called vector paths or vectors.
A vector object is a shape made up of vector paths. It is possible to edit each object separately, for example, change the shape, stroke, fill, size and position. A stroke follows the outline of the vector path and a fill adds a colour to the area inside the path.
Smaller file size - vector graphics, unless bitmap images, do not store data [data: information without context, eg a list of students with numbers beside their names is data, when it's made clear that those numbers represent their placing in a 100 metre race, the data becomes information ] about each individual pixel. For a large illustration, such as a poster, a vector graphic would have a significantly smaller file size compared to a bitmap [bitmap: bitmaps are made up of pixels (tiny dots) that together form an image ] image.
Scalable - when you resize a vector graphic the mathematical relationships mean that the image does not lose quality. A vector graphic the size of a postage stamp could be resized to be used on a poster and the image would still be clear.
To resize the vector graphic below drag the slider from left to right or click the righthand magnifying glass.
Vector graphics are never going to be as life-like as bitmaps or photos. They will always appear computer generated.
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