Monday, March 31st, 2014 at 2:27 pm. Whether your central heating or air conditioning system is running, when you detect any unpleasant smell coming from the air wafting through the vents, you need to have professionals investigate the cause right away. These odorsâmusty, mold, acrid, or anything elseâusually mean something serious has gone wrong in the system.
In its simplest form, a raster consists of a matrix of cells (or pixels) organized into rows and columns (or a grid) where each cell contains a value representing information, such as temperature. Rasters are digital aerial photographs, imagery from satellites, digital pictures, or even scanned maps.
Raster and Vector data. The first step in converting map information into a form that can be read by a computer is to describe the shapes and locations of features using a series of numbers. Computers store information in sequences of binary digits (bits), which form a code for every possible number or letter.