Naval Postgraduate School OC3902

FUNDAMENTALS OF MAPPING, CHARTING, AND GEODESY

Lab4: ArcGIS Part-2

Lab Exercise

Mapping from shapefile data

The ESRI Shapefile or simply a shapefile is a popular geospatial vector data format for geographic information systems software. It is developed and regulated by ESRI as a (mostly) open specification for data interoperability among ESRI and other software products. A "shapefile" commonly refers to a collection of files with ".shp", ".shx", ".dbf", and other extensions on a common prefix name (e.g., "lakes.*"). The actual shapefile relates specifically to files with the ".shp" extension, however this file alone is incomplete for distribution, as the other supporting files are required.

This lab will practice how to map from shapefile data and how to use layout view to represent a piece of paper with several maps. There are three Georgia shp data sets named as counties, cities, and inter (interstate and US high way) in this lab folder partB. The counties data include some information, such as population(1980,1990,1993,1998), population growth rate (1993-1998), percentage of (white, black, asian, hisp, and others), base incoming, percentage of incoming (over 150k, 100k-150k, 75-100k, 50-75k,……), average age, ……. Try to make one page plot include three map, the main map is the 1998 population with county names, city names, interstate and US high way, the other two sub map will be: population growth (1993-1998) and average incoming.

Please copy the directory lab4_ArcGIS2 with all the data files to your working directory from \\lrcapps\common$\OC3902\FY09Qtr1, and work in your own directory.

Step 1	Start ArcMap and Create a new view
	Start ArcMap, check “A template”. Change the director to lab4_ArcView2 Select “emptylayout.mxt”. Then click “Ok”. Now you get an empty layout view map. Switch ‘layout view’ to ‘data view’.
Step 2	Add the shapefile data
	Click the “add data” button in the standard tool bar (or click the File from main bar and pull down to the add data ) to open Add Data Catalog. Go to your working director lab4_ArcView2, chick all the three data files (cities.shp, counties.shp, and inter.shp). Click Add.
Step 3	Change city symbol and size
	Change the right city symbol (circle1) and size (8) the same way as the last lab.
Step 4	Choose the different line styles and text symbols for inter state and US highways
	Different line styles: Right click on “inter”, click “properties…”, click “symbology”, in the “Layer Properties” Catalog. Choose “Categories”, then click “Unique values many fields”, pull down value filed to “TYPE” and leave the other two line <NONE>. Click “Add All Values” (or click “Add Values…” select both “interstate” and “US”). Change the property from “Symbology” to “Labels” and check on “Label features in this layer”, change the method to “Defined classes of features and label each class differently.”. Click “Get Symbol Classes” and pull down to “Interstate” on Class and pull down to “ROUTE_ID” in Label Field. Click on “Symbol’ and select “U.S.Interstate HWY” on the Symbol Selector Catalog. Click “OK” and click “Placement Properties…” on “Other Options”. In the Placement properties Catalog select Orientation as “Parallel”, and Position as “On the line”. Click “OK”. Switch the Layer Property from “Labels” to “Symbology” in Laper Properties Catalog. Double click “Interstate” and change Symbol selector to “Highway”, color as red and width as 2. Click “OK” both in symbol selector and layer properties. Same way to modify U.S.Hwy symbol, size and placement properties.
Step 5	Name the counties with different color and 1998 population on the map
	Right click on “counties”, click “Properties…”, click “Symbology”, in the Layer Properties Catalog and select “Quantities” and “Graduated Colors”, in the “Values” of field choice “POP_98” and leave <NONE> in Normalization, choice the classes number and color ramp. Click “Labels”, mark “Label features in this layer”. If you want add both “NAME” and “POP_98” in label fields, click “Expression” instead of selection. Pull down to “POP_98” click Append in the Label Expression Catalog. Click “OK” in both Label Expression window and Layer Properties window. Now you can get map as: If you like to add a round brackets on population number, you can modify the expression [NAME] & " " & "("&[POP_98] &")" in the Label Expression Catalog.
Step 6	Switch data view to layout view
	Click “layout view”, change the map size and move it to the upper half of the paper. Add text Population (1998) as the map title (use Drawing tool bar).
Step 7	Make the sub map population growth
	Click “Insert” in main menu, click “Data frame”, move the frame and re size it, to the right position. Click add data ‘symbol’ in standard tool bar, only select “counties.shp”. Use layer properties to make the POP_GROWTH map with label on. Make the title as “Population Growth”.
Step 8	Make the sub map average family incoming (AVG_INC).
	Similar to the step 7
Step 9	Save the maps as a ArcMap document files (.mxd)
	Pull down to “Save As” from File in main bar, save the map as lab2.mxd.
Step 10	Save the maps as a GIF (.gif) Pull down to “Export Map…” from File in main bar, save the map as lab2.gif.

Email lab2.gif to: fan@nps.edu

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Last Updated 29 Sep. 2008
POC: Peter Chu