Assignment 1 This is an individual assignment Please submit

Assignment 1

This is an individual assignment. Please submit as a MS word or PDF file to Blackboard by the

deadline.

1) Watch the following videos and write a oneparagraph summary for each video clip.

a. ArcGIS 9.3: Advanced planning and analysis Part 1

http://www.youtube.com/watch?v=mBSXBqEP7Y&feature=related

b. ArcGIS 9.3: Advanced planning and analysis Part 2

http://www.youtube.com/watch?v=8r7hI0dM3Fs&feature=related

c. Spatial Analysis for Urban Planning Demo

http://www.youtube.com/watch?v=ZqMul3OIQNI&feature=related

2) Find one example of GIS application on the internet in your specialized area or interest. Describe its

purpose, its application, data used, software used, and geographic area of application. Provide the URL

address.

3) Answer the following questions:

a. Who started the first GIS project? For what purposes? What motivated this project? When was it

completed?

b. What does FGDC stand for?

c. When we say that GIS data are captured at a scale of 1:50,000, what might we mean by that? What

may be the size of the smallest objects that will be captured in the data?

d. What is map projection?

4) Practice the application of map scales for converting map distance (area) to ground distance (area)

and vice versa (see examples in lecture note set No.2). From Google Earth, select an area in Miami and

zoom into the area. Capture it as a screen capture to include in the homework. Use the ruler tool in

Google Earth to measure the two dimensions of the screen capture. Also measure the two dimensions

of the image after it is inserted into the word file. Calculate the scale ratio and label the image.

5) Determine which of the following graphic scales is the best to use and explain why.

6) Determine which of the following ratio scales is the best to use and explain why.

a. 1:54,300

b. 1:50,000

c. 1:55,000

7) Read chapter 2 and review concepts of projections and watch the following videos.

a. Orthographic Projections

Orthographic project involves creating a representation of a 3D object in a flat 2D space. The links below

show examples of orthographic projections. The projections (or views: top, bottom, left, right, front,

back) can be thought as the \"shadows\" cast by a light source from which parallel light rays are emitted.

The light rays pass through the object and the intersections between the object\'s surface and the light

rays are cast on the projection plane, which form the \"plane views\" (2D views).

Orthogonal projection http://www.youtube.com/watch?v=RIR3oCP1NI&feature=related

Glass Box http://www.youtube.com/watch?v=ZtaPw7ZWmR4&NR=1

Orthographic Animation Http://www.youtube.com/watch?v=E9ZfThdVnbA&feature=related

b. Perspective drawings

A main difference between perspective and orthographic projections is that the light source(s) in a

perspective projection is a point source, from which the light rays are emitted.

How to Draw with One Point Perspective option1 http://www.youtube.com/watch?v=7ZYBWAifEs

Solution

Solution –

2)

Example of GIS application on the internet - Case Study—Charleston, South Carolina - Using Imagery and GIS for Tracking Urban Growth along South Carolina’s Coast.

Purpose – The goal of the study was to identify, document, and communicate the rate of urban change to support effective land planning decisions in the future.

Application -

Data used –

Three classes of land cover—water, nonurban, and urban—were identified and verified.

Software used - ArcView

Geographical area of application –

South Carolina’s coast

URL Address - https://www.google.co.in/url?sa=t&rct=j&q=&esrc=s&source=web&cd=8&cad=rja&uact=8&ved=0ahUKEwjV7Ovw39vYAhVJmZQKHSmlAdkQFghbMAc&url=http%3A%2F%2Fwww.esri.com%2Flibrary%2Fbrochures%2Fpdfs%2Fgis-sols-for-urban-planning.pdf&usg=AOvVaw0sAFDtFGn1zv-RB6dO5QrD

3)

a) French Geographer, Charles Picquet, first started the GIS project.

Purpose - Created a map based representation of cholera epidemiology in Paris by representing the 48 districts of Paris with different halftone colour gradients.

This project was based on the spatial analysis and to show the cholera deaths per thousand inhabitants for each of the 48 districts in paris.

Project was completed in 1832.

b) FGDC stands for “Federal Geographic Data Committee”

c) 1:50,000 mean “scaling 1 unit to 50,000 units”, irrespective of metric, C.G.S or any unit system.

1 unit may be the size of the smallest units captured in the data which represents the 50,000 units on the project.

d) A map projection is one of many methods used to represent the 3-dimensional surface of the earth or other round body on a 2-dimensional plane in cartography (mapmaking).

6)

1:50,000 is the best ratio scale to use, as the 50,000 can be written in the multiple of 10 easily.

.