Graphics Made Simple
In ancient times, self-respect sailor who did not go home without a large number of letters in his arm clip and a magnetic compass in your pocket. Today, most of the charts in electronic form and more than likely appear in marine GPS, plotter, or a Combo Drive Marine Electronics.
What is the graphics and how to use it?
In short, the graphics are topographic maps of the region by sea or inland. There are actually two formats, the frameand the carrier. A raster chart is composed of digital images showing the geo-referenced. So you can enter your boat to see the cards in terms of other functions to find, for example, to what extent is the mainland. It can be updated periodically by the NOAA raster maps. Uniform Display bitmap Raster Graphics Systems (DCR) is called, which is the format used NOAA. So if you want to update the matrix board NOAA, you need a plotter orTable on screen, the RCDS is compatible. (NOAA is the National Oceanic and Atmospheric Administration. This is a government agency responsible for oceans and atmosphere).
The second type of graphs, vector diagrams. Vector graphics is a set of paper maps can be overlaid with digital objects and the information collected in a database. NOAA has years of vector used to construct the maps, but they are becoming amore plotters decide to use. The uniform format for vector graphics called NOAA ENC and ENC. NOAA ENC, free upgrades and free. To take advantage of the tracer must be able ECDIS ENC (Electronic Chart Display stands for Edicso and Information) will be.
ENC are real-time information such as tidal currents, gives the coordinates of the limits of the channel, and other geographic information to facilitateNavigation and collision avoidance to be easy. NOAA has completed the image vector information for all major U.S. ports and continue to refine the information on the smaller ports. As with the letters for the points, you can update from NOAA, and add data.
With vector graphics and raster
To use the raster and vector graphics from a third-party commercial software they need, how to process and display the letters known. Most of the plotters and GPS-plotterUse one or both types of graphs. What is the best, raster or vector? It depends on you, the network contains less information, but so far is a complete set of cards. Vector graphics, while still under construction, have made great progress in recent years and is updated each week, while the database is to continue to grow steadily. It will be the most likely option, updates are available directly from the manufacturer of the tracer, but it depends on whether the option to downloaddirectly from NOAA, leads to the smallest details as they become available.
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