Chapter 3 Gis Ijoi
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Transcript of Chapter 3 Gis Ijoi
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CHAPTER 3
Objective:
To convert the coverage into shapefle
To examine the data structure.
To create a geodatabase and import shapefle in to it.
To coverage with built-in regions and route subclass.
To convert data into a digital elevation model (TIN).
Task 1: Examine the data file structure f cvera!e and sha"efile
#ummar$
For task 1, it shows the data layers such as label, polygon, arc and tic. It also ask to convert the
coverage into a shapefile and examine the shapefile’s data structure.
Outcmes
Figure 1: nd product for task 1
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%uestin 1:
For coverage, it can store many type of data. !his concept same to feature data set and feature
class. For shapefile, it has single data only.
%uestin &:
"ystem that involve are feature class and dbase
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Task &: Create !edatabase' feature dataset and feature class
#ummar$
For task #, it ask to create a file geodatabase and a feature dataset. $eodatabase is created and
name as Task2.gdb and for new feature dataset, we named it as Area_1 and the pro%ected
coordinate system is &!', ()* 1+#, -( 11. !his coordinate system is shared by all feature
class in Area_1. (ext, import the shapefile intointo the feature dataset as feature classes and
examine their data file structure. ) standalone feature class and feature class in a feature dataset
cannot use the same name and the name must be uni/ue.
Outcme
Figure #: utcome for task #
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Task 3: Cnvert a sha"efile t a "ersnal !edatabase feature class
#ummar$
In task 0, the data will be update the area and perimeters value of shapefile by converting it into a
feature class in a personal geodatabase. !he personal geodatabase is rename as task3.mdb.
Outcme
Figure 0: after update the shapefile
%uestin 3:
ther than shapefile, raster and table also can be imported to a geodatabase.
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Task (: Examine "l$lines )ith measures
#ummar$
In task , we need to identify the route location or we need to examine the polyline shapefile.
2hen we click the route, the coordinate will appear.
Outcme
Figure : highway routes
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Figure 3: route info
%uestin (:
(o
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Task *: +ie) re!ins and rutes
#ummar$
For task 3, it ask to view the regions and route subclasses that reside in hydrography coverage.
(ew data frame is created and named as 4nhd15 and 4nhd#5 then add shapefile data into the
frame. !he layer can be converted in nhd which is known as coverage layer into a shapefile or
geodatabase feature class.
Outcome
Figure 6: 7olygon data frame in nhd 1
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Figure : 8oute data frame in nhd #
%uestin *:
9es
%uestin ,:
9es
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Task ,: +ie) T-.
#ummar$
In task 6, it ask to prepared !I( from a digital elevation model.
Outcme
Figure : )fter !I( is produced
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Challen!e Task
%uestin 1
; (