What are the three distinct branches of data collection?
- Primary geographic data collection
- Secondary geographic data collection
- Data editing
These branches represent different methods of gathering and processing geographic data.
Define data capture.
The process of collecting data directly from sources
This involves obtaining data through various means, such as surveys or measurements.
Define data transfer.
The process of inputting data from other systems or studies
This includes reusing existing data rather than collecting new data.
What are the primary sources of data capture?
- GPS measurements
- Field survey measurements
- Digital satellite remote sensing images
- Digital elevation models
These sources provide original data directly from the field.
What are the secondary sources of data capture?
- Scanned paper maps
- Digital aerial photographs
- Toponymy databases
These sources involve data that has been previously collected and is being reused.
What is photogrammetry?
The science of making measurements from photographs
It is used to gather information about physical objects and the environment.
Define Coordinate Geometry (COGO).
A method used to define parts of an object using survey-style bearings and distances
Commonly applied in land records and property descriptions.
What does GNSS stand for?
Global Navigation Satellite System
It includes systems like GPS, GLONASS, Galileo, and others.
What are the three main components required for obtaining location using GNSS?
- Satellite segment
- Control segment
- User segment
These components work together to provide accurate location data.
What is the difference between manual and automatic digitizing?
- Manual: Data is entered by hand using a mouse
- Automatic: Data is captured using software tools
Each method has its own considerations regarding accuracy and efficiency.
What are the considerations for citizen science?
- Accessibility of locations
- Representativeness of data
- Quality of submitted data
These factors affect the reliability and usefulness of data collected by volunteers.
What are the common data formats in GIS?
- SHP
- DBD
- GEOTIFF
- DXF
- GML
These formats are used for storing and sharing geographic information.
What is the purpose of data editing?
- Edge matching
- Tiling
- Reprojecting
- Generalization
These techniques improve data quality and ensure consistency across datasets.
What is remote sensing?
Collecting information about phenomena without direct contact
It involves using satellite or aerial imagery to gather data.
True or false: LiDAR is a method of remote sensing.
TRUE
LiDAR stands for Light Detection and Ranging and is used for measuring distances.
What is the role of external data sources in GIS?
To provide additional data that enhances analysis and decision-making
External sources can include public datasets, satellite imagery, and more.
What is volunteered geographic information?
Data submitted by ordinary people through online platforms
This form of data collection is also known as citizen science.
What is the title of the book authored by Longley, Goodchild, Maguire, and Rhind?
Geographical Information Systems and Science (4th ed.)
This book discusses various aspects of geographic information systems.
In which edition is the chapter titled Data Sources found?
4th edition
The chapter is part of the book published by John Wiley & Sons.
What is the ISBN of the book GIS fundamentals: a first text on geographic information systems?
978-1-5939-9552-2
This book serves as an introductory text on GIS.
Who are the authors of the book titled Geographical Information Systems and Science?
- Longley, P.A.
- Goodchild, M.F.
- Maguire, D.J.
- Rhind, D.W.
These authors are recognized experts in the field of GIS.
What is the publication year of the 4th edition of Geographical Information Systems and Science?
2015
This edition includes updated information and research in GIS.
What publisher released the book Geographical Information Systems and Science?
John Wiley & Sons
This publisher is known for academic and professional books.
What is the page range of Chapter 8 titled Data Sources in the book?
pp 537
This chapter discusses various data sources relevant to GIS.
