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.
Differences Between RNCs and ENCs. The NOAA Office of Coast Survey (OCS) produces two kinds of digital charts; Raster Navigational Charts (RNCs) and Electronic Navigational Charts (NOAA ENCÂ®). A Raster Navigational Chart is an accurate digital image comprised of pixels, displayed on an electronic screen. Each pixel has a unique color or it has no color.