Question

When considering the difference between thematic rasters and image rasters, which of the following statements is correct?

A. Thematic rasters represent spatial information, while image rasters represent categorical information.
B. Thematic rasters represent categorical information, while image rasters represent spatial information.
C. Thematic rasters and image rasters are terms used interchangeably and have no distinction.
D. Thematic rasters and image rasters both exclusively represent temporal information

Answer 1

The correct answer is Option B. Thematic rasters categorize data in GIS maps, while image rasters represent the earth's surface with detailed visual information derived from photos or satellite imagery.

Step-by-step explanation:

To understand these concepts, consider that thematic rasters are designed for maps that categorize areas, such as soil types or land use. This type of raster is used in GIS to show different categories of data, each category typically associated with distinct colors or patterns.When differentiating between thematic rasters and image rasters, the correct statement is that B. Thematic rasters represent categorical information, while image rasters represent spatial information. To understand these concepts, consider that thematic rasters are designed for maps that categorize areas, such as soil types or land use.

This type of raster is used in GIS to show different categories of data, each category typically associated with distinct colors or patterns.

On the other hand, image rasters are essentially digital photos and satellite imagery. These reflect spatial information and visualize the earth's surface in a naturalistic way. Each pixel in an image raster is a blend of different wavelengths of light, giving a detailed picture of a location as it is seen from above.