vector data model lab
DESCRIPTION
using arc gis 9.3TRANSCRIPT
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Chapter 3
Introduction
In this chapter the task is all about application to vector data model. All we know that the vector are
consist of point, line polygon. Here the task given is to make the student can manipulate and make the
data model of the vector.
Task 1(examine the data file structure of coverage and shape file)
Objective: to view the data layer (feature classes) associated with coverage in arc catalog and examine
its data structure shape file dare using window explore. Also convert the coverage into shape file and
examine the shape file data structure.
Procedure
Open arc catalog access the chapter 3 from the tree select the coverage land .it will show the coverage
contain arc label, polygon and tic. The preview for each features class can view by selected on the
preview tab. Notice the order that given that each classes will correspond with its features classes.
When right click the data of the task from the catalog tree properties been selected. As shown the
coverage properties have 4 tab that:
a) General tab: show the presence of topology for the polygon features class.
b) Projection tab: show an unknown coordinate system
c) Tics and extent tab: show the tics and extent of the coverage
d) Tolerance tab: show the various tolerance value for editing and building topology.
When using the window explore to view a file. The folder generally contains arc data file(.adf) and some
of these graphic files are recognizable by name, such as arc.adf for the polygon/arc list. The file is in
binary files and cannot be read.
To convert the files to shape file, arc tool box been use. There 2 options to convert the files. First option
is to use feature class to shape file and second option is export function in data set context menu. Here
the second option had been use.
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Arc catalog-connect to folder-chapter3
Click plus sign the land
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Right click land-propertise
Show unknow coordinate system
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Right click polygon-propertise
Show 76 numberof feature
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Right click polygon- export-to shapefile(single). Output chapter 3-output feature
class(land_polygon)-ok
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Show land_polygon.shp
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Right click land_polygon-propertise. Coordinate system-show unknow
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Task 2 (create file geodatabase, features dataset, and features class).
Objective: to create a file geodtabase and features dataset. To import the shape file into the features
dataset as features classes and examine the data structure
Procedure
First is to make the geodatabase file. The folder that contain the data been right click then select new
and select geodatabse. Then the file been rename. All this been done in arc catalog.
Next to create the features dataset. The file that bee done before this been right click and selected new.
Then select the features dataset. Then choose the name and coordinate projection
The file will appear in the geodatabase.. right click the file to import it and select to features class
multiple .
In the gesodatabase file properties, it has 2 tabs. The general tab and domain tab. The domain use to
establish valid values or valid range of value for an attribute to minimize data entry error.
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Start arc Catalog - connect to folder – chapter3
Right click chapter 3-new-file geodatabase -rename as task2.gdb. Right click task2.gdb-new-
feature dataset
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Name(area_1)-next
Projected coordinate system-UTM-NAD1927-NAd 1927 UTM Zone 11N-next
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None-next
Finish.
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Right click area_1 –import –feature class(multiple). Input elevzone.shp & stream.shp – output
area_1 – ok
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Right click task2.gdb – propertise
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Right click elevzone – propertise –show 10 tabs.
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Task 3(convert shape file to a personal geodatabase features class)
Objective: to update area and perimeter values of data by converting it into a features class in personal
geodatabase.
Procedure:
In arc catalog, the file been selected. On the preview tab, the preview been changed into table.
Then, make the personal geodatabase, the procedure same with the previous chapter.
The result is when the file be preview the correct perimeter and area values will be show.
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Arc catalog – chapter 3-landsoil.shp
Preview type-table
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Right click chapter 3 – new – personal geodatabase. Rename task3.mdb
Right click task3.mdb – import – feature class (single)
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Input landsoil.shp. Output task3.mdb – output feature class (landsoil) – ok
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Preview in table
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Task 4(examine polylines with measure)
Procedure:
In this has arc map have been used. the data been added and open the attribute table to check the
information that want to known.
This steps is to add the identify route location tool. To make it appear, customize been selected from the
tools menu. Then on the commands tab, selected category linear referencing next drag and drop the
identify route location command to a tool bar in arc map. Then finish it by closed the dialog box.
The identify route location command is to shows the measures values of the point that be selected as
well as the minimum measurement, maximum measurement and other information.
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Arc map – rename data frame task 4 -
Add data -
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Choose Decreasse24k.shp-
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Right click decreasse24k.shp – open attribute table
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Right click decrease 24k – properties
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Routes tab - route identifier – sr – ok
Select customize menu – customize mode – command tab – linear referencing – identifier route
location.
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Drag to toolbar in arcmap
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Select feature – select a highway
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Click identify route location, Result display information of selected highway
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Task 5(view regions and route)
Objective: to view the composite features as well the simple features of arc and polygon in the
coverage.
Procedure:
If the selected data be expanding in the arc catalog, various type of layer will been show. The two basic
layers are the region layer that represents regions subclass and the route as the layer of route subclass
In the arc map, the attribute table of the selected data will show the information.
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Arc catalog – chapter 3
Rename data frame- nhd 1
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Add data – polygon,region.lm,region.rch,region.wb. Right click region.lm – open attribute table
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Insert – data frame Rename as nhd2 , Add data – arc,route.drain,route.lm,route.rch
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Right click route.rch – open attribute table
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Right click route.rch – data –export, As a shapefile
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Task 6(view TIN)
Objective: to view Tin
Procedure:
The data been added in arc map, then open the data properties. On the source tab, the data source
frame show the number of nodes and the elevation range.
On the symbology tab, unchecked the elevation then clicked the add button in the show frame. A dialog
appear then, highlighted edges with the same symbol and click add.
Arcmap – rename data frame – task 6
Add data - emidatin
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Right click emidatin – propertise, Symbology -
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Uncheck elevation -
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Select add , Select edges with the same symbol – add, Show triangle (faces)
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Conclusion
In task 1 it all about the converting the coverage into a shape file and then examine the data structure of
the coverage and shape file. Then, in task 2 it discuss about how to work with basic elements of the file
geodatabase. Task is show how to update the area and perimeter values of a polygon shape file by
converting it into personal geodatabase features class. Then, in task 4, it teaches how to view routes in
the form of polylines with m values. In task 5, it shows how to view regions and routes subclass. Lastly in
task 6, lets us view a Tin in arc catalog and arc map.