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## Vector Data & Raster Data

### Vector Data

A Vector data feature its represent shape using Geometry. The geometry is made up of one or more interconnected vertices. A vertex describes a position in space using an X, Y and optionally Z axis. Geometries which have vertices with a Z axis are often referred to as 3D since they describe height or depth at each vertex, but not both.

Vector Database is simply XY coordinates. Generally, they are a Latitude and Longitude value. The Vector data represents are points, lines, and polygons.

### Raster Data

Raster data represent real world data, within the GIS environment. Its consists of a matrix of cells (pixels) organized into rows and columns (grid) where each cell contains a value representing information. Raster database represents continuous data such as Elevation, Slope, Surface.

Raster Database are Digital Aerial Photographs, Satellites imagery, Digital pictures, or even scanned Maps.

#### Vector Data vs Raster Data

Raster Data

• Grid and cells
• For continuous data such as elevation, slope, surfaces

Vector Data

• A series of x,y coordinates
• For discrete data represented as points, lines, polygons
##### Difference Between Raster Data vs Vector Data

Raster Data

Vector Data

• Easy and efficient overlaying
• Compatible with remote sensing imagery
• Efficient to represents continuous data
• Simple data structure
• Smaller file size
• Editing is very Easy
• Proper identity for discrete objects, like point, line or polygon
• Efficient Topological relationship
• Accurate projection transformation
• Difficult overlay operations
• Not Compatible with remote sensing imagery
• That is Not proper represents continuous data
• Complex data structure
• Larger file size
• Difficult to edit
• It’s a pixel series, so not accurate identity the objects
• Did not build Topological relationship
• Inefficient projection transformation

#### Raster & Vector File Format

##### VectorFile Formats

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