raster means an array of simple dots as e.g. your newspaper is made of
and you may create with a paint program as e.g. Phtoshop.
coordinates are the values of the control points of geometrical
objects which are sufficient for describing the entity as e.g. the
start and end point of a line or the center point and radius of a
CAx systems of course do use vectors which is obviously needed for
doing the transition calculations as e.g. moving, rotating, scaling,
mirroring etc. without losing the objects 'quality' i.e. exact
Most CAx apps can of course embedd raster data which is often needed
for e.g. logos or scanned plans in the architectural area (see GIS).
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