Vector and Raster GIS Data Model

choose correct statement about vector data model

• to display discrete object

• to model satellite images

• to display continuous object

• less smooth presentation

One Source of data to produce accurate DEM is

• paper map

• A-GPS measurement

• LANDSAT satellite image

• Terrestrial laser scanning (lidar)

What is TIN

• Triangle Intensify Network

• Triangle irregulate Networking

• Triangulated Inconsistent Network

• Triangulated Irregular Network

Choose data sources for GIS

• Terrestrial Laser Scanning

• geomatics survey

• Satellite radio

• Openstreetmap

All of these data are best to be modelled in vector, except

• pest count in crop plantation

• Frequency of bird species

• Number of vehicles in traffic lights during peak hour

• Humidity

Below are the manipulation that can be done on raster data in GIS software, except

• Adjusting brightness

• Modify image saturation

• Clipping specific area

• Reclassify

Choose statements that correct about the use of DRONE for mapping

• Good for large area

• very high accuracy

• use for preliminary survey

• Good for small area

What is a term to describe this point (shown in the blue circle ) in TIN?

• triangle

• arc

• edge

• node

Which one is incorrect about DEM

• DEM could be used to calculate slope

• aspect can be derived from DEM

• DEM is a vector based data model

• DEM is an elevation model that encapsulates DTM and DSM

Which are correct about raster?

• Raster is normally used to model discrete data

• Rasterization is converting raster into vector

• Raster is normally used to model continuous data

• Climate data is normally modelled using raster data model