Raster and Vector data in spatial Data Visualization

What is the main difference between raster and vector data in spatial data visualization?

• Vector data is always stored in a grid format, unlike raster data.

• Raster data is more accurate than vector data in representing geographic features.

• Raster data is only used for 2D visualization, while vector data can be used for 3D visualization.

• The main difference is that raster data is pixel-based and represents continuous phenomena, while vector data is based on points, lines, and polygons to represent discrete features.

Which type of data is more suitable for representing continuous phenomena like elevation models?

• Raster data

• Point cloud data

• Vector data

• Tabular data

What are some common file formats used for storing raster data?

• SVG

• TIFF, JPEG, PNG, GIF

• BMP

• PDF

How are vector data represented in terms of points, lines, and polygons?

• Dots for locations, dashes for linear features, and circles for areas.

• Points for locations, lines for linear features, and polygons for areas.

What are some advantages of using vector data over raster data?

• Vector data provides more precise representation, smaller file sizes, easier editing, and better scalability.

• Vector data has larger file sizes and less precise representation

• Raster data is easier to edit and has better scalability

• Raster data provides more precise representation and smaller file sizes

How does the size of raster data files compare to vector data files?

• Raster data files are larger in size compared to vector data files.

• Vector data files are larger in size compared to raster data files.

• Raster data files and vector data files have the same size.

• Raster data files are smaller in size compared to vector data files.

What are some common GIS software applications used for working with raster and vector data?

• AutoCAD

• Google Earth

• ArcGIS, QGIS, GRASS GIS

• MapInfo

What is the process of georeferencing in spatial data visualization?

• Georeferencing involves converting text data into spatial coordinates directly.

• The process of georeferencing does not require any transformation methods.

• The process of georeferencing includes identifying control points, selecting an appropriate transformation method, and assigning coordinate values to the spatial data based on reference data.

• Georeferencing assigns random coordinate values to the spatial data.

How can raster and vector data be combined to create more informative visualizations?

• By using raster data exclusively without vector overlays.

• By ignoring both raster and vector data in the visualization.

• By converting raster data into vector format only.

• By overlaying vector boundaries on top of raster imagery.