Wednesday, October 27, 2010

Lab 8


Boldstad Chapter 8 questions and answers
1. A database management system organizes and manipulates data. A DBMS uses specific software tools to managing tabular data - especially to retrieve and index data.

2. One-to-one  - only one record connects to another. 
    Many-to-one - multiple records connect to one other records in a different table.

3. They are popular because they make the data more independent and have a central control that allows for multiple users to access it.

Ormsby Chapter 8 & 9
4a. String data
4b. String data

5a. LU_Description, LU_General, LU_Type, Acres, Square Miles
5e. 92,236.77 acres

Wednesday, October 13, 2010

Lab 7


I. Chapter 7
1. The information comes from layer attributes.
2. Using the label tool, clicking on the cities you do want to label should label them.
3. Yes. Right Click > Nudge
4. Selector.
5. Map annotation and Geodatabase annotation.

II. Chapter 18
1. a. True
2. Yes, you can.
3. When you launch ArcMap, they give you the option to use a template.
4. Double click on the symbol under the attribute data and a new window should pop up, giving you the option to change the symbol, its color, etc.
5. Select the Symbol or use the drawing toolbar  > fill color.

III. Chapter 19
1. Determine the size and orientation of the map.
2. Layout view can contain multiple data frames, therefore it won't be the same as data view unless adjusted.
3. What type of measurement unit to use, the amount of dividers, and the amount of subdividers.
4. It shows you how the map will appear if printed.
5. Data view would move with the graphic, but in layout view, the overall map is independent of the movement of the graphic.

Part 2:
1. Choropleth maps classify numerical data into shaded categories.
2. Layer files allow you to define symbol assignments and different classifications
3. Layer files don't contain datasets; however layer packages contains the map layer and a copy of its data
4. Long Beach: 461,522
5. Los Angeles: 3,694,820
6. Document, URL, and Macro.

Wednesday, October 6, 2010

Lab 6

1. In your own words, describe how symbology can be influenced by scale.

Symbology can be manipulated so that certain names show up/disappear based on the current scale of the map.

2. What are two ways (one direct and one indirect) to access a layers symbol colors so that they can be changed?

You may either click on the symbol icon under the feature class to bring up the color options or right-click the icon itself and select a color.

3. How would you access the graduated symbols classification icon?

Right click feature class > Properties > Symbology tab > Quantities > Graduated Symbols
 

4. What are 5 other symbology styles (in addition to ‘Conservation’) that are available to customize your features?

Proportional Symbols, Dot Density, Quantity by Category, Stacked, Unique Values.

5. How could you permanently save layer symbology for use later on?


Save the layer as a layer file.

6. How can  pyramids help raster data display faster?

Pyramids contain many versions of the raster map, from coarse to fine, that help the map draw at a faster rate when you zoom in and out.

7. How could you quickly and temporarily change a layer name to aid display in the Table of Contents?
Double click on the layer name in the feature class and rename it.

8. What is normalization?

Normalization is dividing one attribute by another to find the ratio between them. One example, if trying to see if - between two countries - which one has a denser population.