Lab Assignment 3 part IIB

2. Add the three datasets included in the 'Projections' folder to a new ArcMap document or
data frame. Using what you learned in the tutorials and class demonstrations, align the
three datasets using a common projection and/or coordinate system. One is displayed
using a simple datum, the second with a projected coordinate system, and the third is
missing spatial reference information. The best and most practical method would be
aligning the spatial references using the dataset displayed with a simple datum rather
than assigning projections to all three. This method eliminates a large amount of
potential error and ultimately requires the least amount of work.


3. Take screenshots of the Layer Properties with the Source tab displayed for all three
datasets, showing the spatial reference information for each. You'll have to take three
separate screenshots since you can only display one at a time. Include all three on your
blog.
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This assignment screenshot contains steps to convert datums by ArcMap and ArcCatalog, latter steps only used when ArcMap unable to convert.

Final datum for all data (Caves/Faults/Marble) in WGS 1984 UTM Zone 11N

Note: NAD 1983 = WGS 1984

Note: Marble did not show at layer before datum converting.

Lab Assignment 3 part IIA

[Contains multiple images, high speed internet connect recommect.]


1. Using the Chapter 13 folder, complete Chapter 13 in Getting to Know ArcGIS 10. At the
end of each exercise, save your map by selecting File -> Export Map in Layout View and
include iron your blog post for Lab 3.

(This works are to make all datums into same format.)

LAb Assignment 3 Part I

1. As I mentioned, there is a hierarchy of three classes of vector data - shapefiles, coverages, and feature classes - each type with increasing complexity and capabilities. Name the data sets in the folder that belong to each class and which type of vector model they represent (point, line, polygon).

a) Shapefile

b) Coverage

c) Feature Class

Mineral King [Personal Geodatabase]

Caves (PG Feature Class)

Elevation (PG Raster Class)

Faults (PG Feature Class)

Folds (PG Feature Class)

Marble (PG Feature Class)

Streams (PG Feature Class)

Cities [Coverage]

            Point (Point Feature Class)

            Tic (Tic Feature Class)

Countries [Coverage]

            Arc (Arc Feture Class)

            Label (Label Feature Class)

            Polygon (Polygon Feature Class)

            Region.counties (Region Feature Class)

            Tic (Tic Feature Class)

Emergencyctr [Coverage]

            Point (Point Feature Class)

            Tic (Tic Feature Class)

Hydro_In [Coverage]

            Arc (Arc Feature Class)

            Route.hydroIn (Route Feature Class)

            Tic (Tic Feature Class)

Country_boundaries [Shapefile]

Flight_diverge [Shapefile]

Flight_path [Shapefile]

Quksigx020 [Shapefile]

Volcanoes [Shapefile]

2. Describe the icon (color, design, etc) associated with each of the three classes.

Shapefile: single yellow rectangular icon

Coverage: triple yellow rectangular icon

Feature Class: single yellow rectangular icon

Shapefile and Feature Class can include different symbol at inside of rectangular icon. Coverage icon can show one of symbol from its contained Shapefile or Feature Class.

3. Now minimize ArcCatalog. Open the folder where your data is saved using Windows Explorer (the “My Documents” folder used for routine file management in the Windows environment).

You should see a number of different files associated with each of the caves, streams, and marble datasets. Name all six extensions you see. They should be the same for all three datasets and independent of vector data type.

4. Open any of the .prj files. What information is given? (hint: browse the layer properties window for ant vector dataset and compare this information to what you see in the .prj file).

flight_path.prj

flight_diverge.prj

PROJCS["World_Plate_Carree",GEOGCS["GCS_WGS_1984",DATUM["D_WGS_1984",SPHEROID["WGS_1984",6378137,298.257223563]],PRIMEM["Greenwich",0],UNIT["Degree",0.017453292519943295]],PROJECTION["Plate_Carree"],PARAMETER["False_Easting",0],PARAMETER["False_Northing",0],PARAMETER["Central_Meridian",162.5],UNIT["Meter",1]]

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Volcanoes.prj

county_boundaries.prj

 PROJCS["NAD_1927_Albers",GEOGCS["GCS_North_American_1927",DATUM["D_North_American_1927",SPHEROID["Clarke_1866",6378206.4,294.9786982]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]],PROJECTION["Albers"],PARAMETER["False_Easting",0.0],PARAMETER["False_Northing",-4000000.0],PARAMETER["Central_Meridian",-120.0],PARAMETER["Standard_Parallel_1",34.0],PARAMETER["Standard_Parallel_2",40.5],PARAMETER["Latitude_Of_Origin",0.0],UNIT["Meter",1.0]]

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5. What type of data do you suppose the .dbf file extension contains?

Database files

6. Using the lecture, your textbook and ArcGIS Help, describe the contents of each of the four remaining files not addressed in the two previous questions.

.shp – main file (features)

.shx – index file (defines linkages)

.dbf – database file (attribute table)

.prj – projection information

.sbn – spatial index file

7. Go back to ArcCatalog and you should see the Mineral King geodatabase. We will talk in detail about geodatabases later, but what happens when you open the geodatabase? Include a screenshot of what you see.

8. Now navigate to the geodatabase using Windows Explorer. What do you see when attempting to access the geodatabase from Windows Explorer?

Microsoft Access Database

9. Back in ArcCatalog, locate the 'elevation' dataset. This raster dataset represents a widely analyzed type raster data.

a) Add the raster file into ArcMap

b) Briefly describe the type of raster data

Elevation, value of high and low in meter.

c) Name the file extension used to save the dataset (use ArcGIS Help but common raster

formats include TIFF, GRID, ASCII, cid, etc)

Mineral_King.mdb ArcMap personal geodatabase

d) Include a screenshot of the raster image from ArcMap.

 

 (Thanks for solve my 3 questions.)