LKSH GIS Society 1

地理資訊系統於高中職社區化之應用

How to empower community by using GIS

Lecturer: Yao-hui Wang

LKSH GIS Society 2

Lecture 2Content And Operation of

ArcGISLecture Outline

1.What is ArcGIS ?

2.Content of ArcCatalog

3.Geographic Data Models in ArcGIS

4.Content of ArcToolbox

5. Practical Section

LKSH GIS Society 3

What is Arc GIS

• ArcGIS ≠ ArcMap

• ArcGIS ≠ ArcGIS Desktop

Actually ArcGIS is……..

LKSH GIS Society 4

Source: ESRI, what is ArcGISTM? (2001)

LKSH GIS Society 5That’s what our group always execute previously.

Source: Ibid

LKSH GIS Society 6

What ArcGIS Desktop Contain

• ArcCatalog

• ArcToolbox

• ArcMap

And sometime you may use….. ArcScene ArcObject Developer Help

Frequently used

LKSH GIS Society 7

Definitely…Conducting a Project Is Always

The Best Way to Learn GIS

• Use ArcCatalog to find, preview, document, and organize geographic data and create sophisticated geodatabases to store that data

• Use ArcMap to view, edit, and analyze your geographic data

• Use ArcToolbox to deal with Geoprocessing

In a Project, We will:

LKSH GIS Society 8

The Steps in a GIS Project

• Step 1: Identify Your Objectives

• Step 2: Create a Project Database

• Step 3: Analyze the Data

• Step 4: Present the Results

And What’s Next ?

LKSH GIS Society 9

Step 1: Identify the Project Objectives

Preface: the city council want to use a GIS model to site a wastewater treatment plant. And you are the selected GIS expert to conduct with this project.

The city council has provided you with a list of the criteria for a suitable site. The parcels chosen for the site must be:

LKSH GIS Society 10

• Below 365 meters in elevation, to minimize pumping costs

• Outside of the floodplain, to avoid spillage during storms

• Within 1,000 meters of the river, to minimize pipeline construction for treated water that is discharged

• At least 150 meters from residential property and parks, to minimize the impact on the city.s residents

• On vacant land that can be developed, to minimize land acquisition and construction costs

LKSH GIS Society 11

In addition, to further reduce construction costs, the city would prefer that the site be:

• Within 1,000 meters of the main wastewater junction (within 500 meters is considered even more suitable)

• Within 50 meters of an existing road

• The plant will also require a total of at least 150,000 square meters in area.

LKSH GIS Society 12

Step 2: Create the Project Database

You need to 1. Assemble the existing data and review it----Check

the criteria and present them by layers

2. Prepare the data for analysis----

Checking data quality (making sure the data is accurate and up-to-date)

Converting data between formats

LKSH GIS Society 13

Automating data by digitizing, scanning, converting, or geolocating

Defining coordinate systems

Projecting layers to a new coordinate system

Merging adjacent layers

LKSH GIS Society 14

Step 3: Analyze the Data

OrSource: ESRI, Getting stared with ArcGIS, 1999

LKSH GIS Society 15

Convert to Raster data

Environmental Criteria 1 Environmental

Criteria 2Environmental Criteria 3

Figure 3Figure 2Figure 1

Multiply

Figure 4

Economic Criteria 1

Economic Criteria 2

Economic Criteria 3

ClassifyFigure 6 Figure 7 Figure 8

Standardise

MCE RoutineUser Weight

Output

Figure 12 Clip

Figure 13

Classify

Operate

Select Clip

Convert to VectorFigure 15

Figure 16

Figure 17

Mask

Mask

Figure 18 Filter

Figure 21

Decision Making

Detail Assessment

Figure 22VIA

Figure 14

LKSH GIS Society 16

Step 4: Present the Results

Now suppose you are going to present your project at a public meeting you need to consider:

1.Who is your Audience ?

2.What do the equipments you get ?

3.How long would it take ?

4.What kind of problems would they ask ?

LKSH GIS Society 17

Using ArcCatalog

Source: Michael Zeiler, Modeling our World (1999)

LKSH GIS Society 18

Source:Ibid

LKSH GIS Society 19Source:Ibid

LKSH GIS Society 20Source:Ibid

LKSH GIS Society 21

Assembling the database

1. Navigate to the ArcGIS\ArcTutor\Getting_Started folder. Double-click the Getting_Started folder to show its contents.

LKSH GIS Society 22

2. Copy the folder and save it as a folder in C:\drive or D: \drive

LKSH GIS Society 23

3. Create a personal geodatabase

LKSH GIS Society 24

4. Create the City_layers and Analysis folders

LKSH GIS Society 25

a. Copy the parks feature class from the GreenvalleyDB geodatabase to the your project geodatabase.

5.Adding data to your project folderHere are the steps:

LKSH GIS Society 26

b. Create the streets layer in the City_layers folder.

LKSH GIS Society 27

Then in the Save Layer As dialog box, navigate to the City_layers folder in your project folder and name the layer .streets.. Click Save.

LKSH GIS Society 28

c. Create the flood_zone layer in the City_layers folder.

LKSH GIS Society 29

At this point, you have created your own project database as the graph.

LKSH GIS Society 30

Using ArcToolbox

Firstly, the tools can be categorized into 4 groups

LKSH GIS Society 31

Analysis Tool

LKSH GIS Society 32

Conversion Tools

LKSH GIS Society 33

Data Management Tools

LKSH GIS Society 34

My tools

LKSH GIS Society 35

Due to the limited time and non-necessary to present all the tools, here we just use data management tools as our practical example.

1. Double click project wizard (shapefiles, geodatabase) as right side.

LKSH GIS Society 36

2. Choose the shapefile or geodatabase which is you supposed to set up or change the projection.

LKSH GIS Society 37

3. If the shapefile or geodatabase you choose was set up the projection system before, the warning window would appear. Just click OK or 確定 . Then the wizard will go on

LKSH GIS Society 38

4. Click the ‘‘next step’’ and the ‘‘Select Coordinate System’’ would appear.

LKSH GIS Society 39

5. Spatial Reference window would appear and here you can choose to ‘’Select’’ the coordinate systems which are predefined in ArcGIS, ‘’Import’’ a coordinae system from an existing geodataset or create a new coordinate system from the data which is collected by your GPS or field work survey.

LKSH GIS Society 40

Using ArcMap

Here is today’s assignment.1. Add all the layers into a mxd file.2. Try to convert all the layers into the same data structure.

(e.g all become raster or all become raster), then compare the result with the original dataset.

Most of the members of our society have the idea about how to manipulate ArcMap. However when you are dealing with the analysis or representation, you will get the chance to use ArcToolbox and ArcCatalog. So…..