What is the difference between Raster and Vector mapping?
Raster – Raster maps are images made up by a grid of pixels. Raster images are stored as image files such as jpg or TIF. Raster graphics are resolution dependent, they cannot scale to arbitrary resolution without loss of apparent quality. This deficiency contrasts with the capabilities of vector graphics which will easily scale to any size without any degradation. In addition you are unable to affect the integrity of the mapping, although you are able to overlay information such as “we are here” labels, locations etc. Raster maps are most commonly purchased for use as they are supplied, so if you’re happy with the mapping, don’t intend to change the colours, or size greatly then the raster option is the one for you. Vector – Vector graphics uses a mathematical formulae to construct the screen image, giving the best quality possible dependant on the screen or print resolution (size). Vector maps can be changed by editing screen objects as required. Vector formats tend to be used by grap
