Introduction to Geographic Information Systems by Chang 9th Edition-Test Bank

Introduction to Geographic Information Systems by Chang 9th Edition-Test Bank

ISBN-10:1259929647 , ISBN-13:978-1259929649

Introduction to Geographic Information Systems, 9e (Chang)

Chapter 6 Geometric Transformation

1) Why is geometric transformation necessary in GIS?

2) You have obtained obtained digitized a layer from a USGS 7.5-minute quadrangle map together with the 4 nook tics of the map with acknowledged longitude and latitude values. Describe the steps you could regulate to to rework the digitized layer into UTM coordinates.

3) Clarify image-to-map transformation.

4) The affine transformation permits rotation, translation, skew, and differential scaling. Describe what differential scaling does.

5) Operationally, the affine transformation of a satellite tv for pc television for computer tv for laptop computer picture consists of three sequential steps. What are these steps?

6) What are the precise and estimated coordinates of the administration components in a map-to-map transformation?

7) What are the precise and estimated coordinates of the underside administration components in an image-to-map transformation?

8) Outline the “root-mean-square (RMS) error” in geometric transformation.

9) Geometric transformation is usually an iterative course of. Why?

10) Describe a state of affairs, by which the RMS error might not be a dependable indicator of the goodness of a map-to-map transformation.

11) Why can we now have to carry out the resampling of pixel values following an image-to-map transformation?

12) What’s pyramiding?

13) Which transformation method is normally utilized in GIS?
A) Equiarea transformation
B) Similarity transformation
C) Affine transformation
D) projective transformation

Reply: C

14) A geometrical transformation of a newly digitized map usually requires a minimal of ________ administration components:
A) 1
B) 2
C) 4
D) 6

Reply: D

15) Mathematically, the affine transformation makes use of a pair of:
A) first-order polynomial equations
B) second-order polynomial equations
C) third- or higher-order polynomial equations

Reply: A

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Introduction to Geographic Information Systems by Chang 9th Edition-Test Bank