What influence does the appearance of digital map have on the application of traditional maps?

1) Different carriers: traditional maps are based on paper, cloth or other physical objects, and the map contents are drawn or printed on these carriers, while digital maps are stored on computer hard disks, floppy disks or magnetic tapes, and the map contents are represented by numbers; It is used in different ways: traditional maps can analyze and explain the distribution laws and characteristics of geographical things or phenomena through intuitive readings, and can carry out simple measurement and analysis, while digital maps can automatically display, read, calculate and analyze.

2) Different amount of information: Digital map magnetic media has more information than traditional map paper media, and it can also be connected to external attribute database (including descriptive data such as quantity, quality, name and classification of ground objects) for convenient query and display; The load of traditional map is limited after the map is made. Digital map can display not only the information displayed by traditional maps, but also the temporal information of three-dimensional information. On the computer, the scope of a map will not be displayed because of the expansion of the scale, and seamless connection makes roaming possible.

3) Different usage conditions and time: the reading time of traditional maps is shorter than that of digital maps, which is not limited by equipment and operation level, and the visual effect is better; In addition, the update mode and cycle are different: the traditional map update and modification cycle is long, and the digital map can be spliced at any scale, range and form to form a new map, which greatly shortens the mapping time and update cycle.

4) Different application potentials: Digital maps can be easily integrated, fitted and displayed with satellite images, aerial photos and other electronic maps and data to generate various new types of maps; Digital elevation model is generated by using contour lines and elevation points of digital map, and the surface undulation is displayed intuitively and stereoscopically.