These squares, also called pixels, cells, and grids, typically are of uniform size, and their size determines the detail that can be maintained in the dataset. Raster data, on the other hand, use a matrix of square areas to define where features are located. As such, vector data tend to define centers and edges of features. Vector data use X and Y coordinates to define the locations of points, lines, and areas (polygons) that correspond to map features such as fire hydrants, trails, and parcels. Vector data requires less storage space, efficiency, accuracy, clear vision, ease in reproducing, registering and measuring, compatible with relational databases, produce smaller sized files, and therefore consume minimum space and are very simple to update and maintain.Raster and vector are two very different but common data formats used to store geospatial data. It enables quick and easy derivation of the spatial features of a certain area.
0 Comments
Leave a Reply. |
Details
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |