Apart from the electronic navigational chart (ENC), which is compiled using raw data, vector data may also be produced by scanning a paper chart. However, the raster image is then vectorized by digitally encoding individual charted objects and their attributes (structured encoding) and storing such data, together with the object’s geographical location, in a database. The ENC is the designated chart for the ECDIS system and is discussed in the next section. Chart features may be grouped together and stored in thematic layers that individually categorize each group. For example, the coastline could form one layer while depth contours are found on another layer etc. The system operator can thus optimize the display to show only that data of interest and avoid the display becoming cluttered with unwanted data. The vector chart is intelligent in that it can provide information that allows a warning of impending dangers to be generated.
- What is ECDIS? & what are its advantages?
- What are errors of ECDIS?
- Who approves the ECDIS?
- What are Limitations of ECDIS?
- What are ECDIS Back-Up Requirements?
- Difference between RCDS AND ECDIS?
- CURRENT IHO ECDIS and ENC STANDARDS?
- What to do in areas without official ENC coverage?
- What is ECS ( ELECTRONIC CHART SYSTEM)?
- What are RASTER Charts?
- What are the disadvantages of RASTER charts?
- What are the advantages of raster charts?
- What are the disadvantages of Vector charts
- What are the advantages of VECTOR charts?