ArcGIS Desktop, Mobile GIS, Server GIS, Online GIS, ESRI Data. We will be using ArcGIS desktop the most.
2. Would it be better to perform most of your data analysis and layer symbolization in
data or layout view? Why?
It would be better to perform data analysis and layer symbolization in Data view because layout view represents an outlook of the printed page. You can add tittles, scale, bars legends and other elements. With data views you can create analyze and symbolize maps.
3. What are two ways to obtain help for ArcGIS Desktop?
You can go to the main menu and scroll down to the icon “What’s this?” or just press shift+f1 or go to support.esri.com.
4. How are attributes linked to geographic features?
A geographic object in a layer such as a city, a country, a lake and even temperature are all called features. They are just represented in a variety of shapes and they tell you everything about a layer. However, there is much more to a feature and its shape and location. We might be curious about the country’s population, capital system of government, ext. There is a lot of information to be had in a feature. This is why GIS stores information about the features of layer in a table. It keeps record of everything in the feature of the layer. These categories are called attributes. Attributes help describe and define a feature we wish to represent in GIS.
5. What is the file extension of an ArcMap document?
The file extension is map document’ or ‘.mxd’.
6. What are two ways to zoom in/zoom out on a map?
In the tools toolbar click on the zoom in or out tool you will be able to perform this task. The map zooms to its original extend if you click the “Full extend button” icon on the tools toolbar. Another way to zoom in and out is by clicking on the pan tool also located on the tools toolbar. The only thing you have to do is roll the mouse up or down. Another way is to just go to tools on the main menu and look for the zoom icon.
7. List three operations available in the ‘context menu’ of a layer. Hint: Right‐clicking with your mouse in the TOC should help you with this question.
Three operations available in the context menu of a layer are the layer’s property, Opening the attribute table and converting features to graphics.
8. If the check box next to a layer in the table of contents is grayed‐out, what does this mean? How would you resolve this issue?
It means that the layers visibility depends on the map’s scale. To resolve this issue you just have to zoom in and the layer will become visible.
9. What are the differences between large and small scale maps? Provide an example of each.
Large ground areas create small scale maps. For example, a map of the United States.
Small ground areas create large scale maps. For example , a map of your block.
The reason for this is because in a small area the fraction is very small.
10. Describe the differences between features and surfaces. Provide an example for each.
Features: are descriptions in this case geographical descriptions that we wish to represent in GIS. For example a city a river, a lake.
Surfaces: Is more of a continuous expanse that changes from one collection to another. For example the ocean is a geographic expanse that does not change from one location to another, unless we are talking about different water depths.
11. A GIS is a useful problem‐solving tool. You can do all of the following tasks with it, except one. Which one?
- Create project criteria
- b. Query data
- c. Display data on a report
- d. Store project data
Using the existing ArcMap document “Ex03c.mxd”, and the knowledge and skills you have gained from the Chapter 3 exercises, answer the following questions:
12. What are the minimum and maximum elevations of the cities Earhart visited? Briefly describe how you determined these values.
The highest maximum elevation was 1045 the city of Tucson the lowest elevation out of all the cities she visited was the New Orleans, USA with a 0 elevation status. I determined this by doing a right click on the layer called “Cities Earthhart Visited” and then I opened the attribute table.
13. On the continent of Africa, what is the approximate distance (in miles) from Dakar to Assab? What are two techniques (one tool and one process) you could use to figure this out?
It is approximately 5740 miles. One way to figure the approximate distance out is by clicking on the Tools toolbar and the clicking on the measure tool then with the drop down menu we can point to distance and click kilometers, meters or in this case miles.
14. What are two possible methods you could use to figure out the names of the cities shown on the map?
Two ways this is done is by clicking in the identify tool in the tools tool bar and click the city you want to identify. It gives you all the information about the country. You can also simply click on the cities layer located in the TOC and right click. Then open the attribute table and just highlight any city you wish to know the location of.
15. Zoom to the extent of North and South America so that all the cities Earhart visited are labeled. Capture a screen shot (Alt + PrtScr) of this view and paste into your Word document (Ctrl+v). Turn in this screen shot with your answers from this sheet.
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