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Using ArcView GIS: Part 2

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Using ArcView GIS: Part 2 Learning more of the basics for ArcView 3.3 Using ArcView Part 2 * – PowerPoint PPT presentation

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Title: Using ArcView GIS: Part 2


1
Using ArcView GIS Part 2
  • Learning more of the basics for ArcView 3.3

2
Areas to be covered today
  • Saving a project how to and how not to
  • Image and Feature themes (data types)
  • Adding a Theme
  • Scale how to insure it appears on your final
    map
  • Changing colors with the Palette Manager
    especially translucent colors
  • Minimum Requirements for a Map
  • Adding Name, Date and data source to your map
  • Making a jpeg from a layout
  • Proclib what is it and what is required
  • Additional Icons in ArcView

3
Saving a Project
  • A project file DOES NOT SAVE DATA
  • A project file saves a path to data
  • Thus when you resume work on a project the path
    (location must be the same as in the past)

4
Saving a Project Proclib
  • Title Using the Save As Feature for a Project
    File (.apr)
  •         Purpose To save files in the place you
    want, in this case to a C/Temp/yourfolder file.
  •  
  • Procedure
  • 1.      In the U/ drive or your thumb drive
    directory create a new folder with a name
    reflecting your work
  • 2.      In AcrView Click on the File menu? drag
    down to Save As and click
  • 3.      Click on the drop-down list for the Save
    In field
  • 4.      Select the appropriate drive, in this
    case drive U or F or such in the pick window.
  • 5. Scroll down and double Click on the
    folder you have created above to open it.
  • 6.      Now, and not earlier, name the project
    something meaningful by clicking in the File Name
    title box?remove the default name that was given
    and change it to your new file name
  • 7.      Click the Save button.
  • 8.      The new file name should appear in the
    title bar of your file or ArcView project window.
  •  
  •  
  • Originator Lauren Seaby
  • Procedure Date 10-18-00
  • Updated p. buckley, 10-14-08

5
Second choose folder
Third create filename
First set drive
6
Saving a Project
  • I suggest getting into the practice of saving
    your project on either you U drive or thumb
    drive. Later in the quarter we will talk about
    saving on the C drive

7
Feature and Image data
  • Our example using the simple exercise data set
    should well illustrate this
  • Also check-out Some Definitions on the Course Web
    Page

Feature data
Image data
8
First How To -- Definition Building
  • Divide text or powerpoint material into bullets
  • Rank them by order of importance
  • Translate these points in sentence(s) using your
    own words.
  • Insert examples in the definition

9
Feature Data
10
Feature Data ESRI Definition
  • In ArcView, features are stored as vector data
    and their attributes are stored in tables known
    as attribute tables. Each class of features is
    stored in a shapefile and has its own attribute
    table. Attribute tables contain one record for
    each feature of that class in the coverage.
  • Points Points represent features found at
    discrete locations, such as telephone poles,
    wells and mountain peaks.
  • Arcs Arcs represent linear features such as
    streams, streets and contours.
  • Polygons Polygons represent areas enclosed by
    specific boundaries, such as countries, states,
    land parcels and soil types.

11
Feature Data Entity Attribute
Note one Attribute (Descriptive Information) line
or record for each Entity (Province)
12
Adding Image Data
Change the Data Source Type
13
Image Data
Note there are no Attribute Tables Available with
Image Data
14
Image data ESRI Definition (my highlights)
  • An image is a graphic representation or
    description of an object that is typically
    produced by an optical or electronic device. Some
    common examples of image data include remotely
    sensed data, such as satellite data, scanned
    data, and photographs.
  • Image data is a form of raster data where each
    grid-cell, or pixel, has a certain value
    depending on how the image was captured and what
    it represents. For example, if the image is a
    remotely sensed satellite image, each pixel
    represents light energy reflected from a portion
    of the Earth's surface. If, however, the image is
    a scanned document, each pixel represents a
    brightness value associated with a particular
    point on the document.
  • To change the way an image looks and to derive
    additional information from an image you can edit
    an image's legend. (Aside but this is very
    limited)
  • Images are often used as the background to views,
    with spatial data being drawn on top of them.
    Themes representing images are therefore normally
    moved to the bottom of the view's Table of
    Contents, so that they are drawn on the view
    first.
  • The main difference between image data and
    feature-based spatial data is that images do not
    contain attribute data about the features they
    show.

15
Now you do it
  • Take a moment to build a definition for each
    feature and image data

16
Adding a Theme to a View
  • Be sure to choose between feature and image data

17
When adding a theme be sure to choose between
feature (usually default) and image data
Add Theme
18
Scale
  • Must know the scale/Coordinate System at which
    the data was electronically stored
  • The most common Coordinate System for ESRI is
    lat/long
  • The most common in the US in governments is State
    Plane
  • The most common internationally is UTM
  • Know mapping units and choose measurement units

19
Setting Scale
Coordinate system units
  • From the Menus open
  • View/Properties
  • Then set map units to correct map units
  • Map units are the coordinate system units in
    which the data is electronically stored like feet
    in State Plane

20
Setting Scale
Here the Mapping units are metric
(meters) Electronically stored units But when
measuring around town in Bellingham the Distant
units have been set to miles
21
Using Scale to Measure
Selecting the measurement tool
22
Measuring in Miles across Bellingham Bay
Mapping units (coordinate units) in meters
Measurement in miles
23
Using Scale
Now the scale bar in the final Layout Map can be
used
24
Translucent Colors
  • Choose the theme you wish to work with
  • Know the difference between foreground and
    background colors
  • Know what fills are
  • Make your choices

25
Translucent Colors
This is left as on exercise for you to figure out
Take GOOD notes in class
26
Minimum Requirements for a Map
  • See the course web page
  • Also realize that this is a changing answer
  • However in my class use my requirements

27
Adding metadata to a map
  • Take some notes on the icons we use
  • Also see PowerPoint notes from last week

28
Making a jpeg from your Layout
  • Choose File/Export

29
Making a jpeg from your Layout
  • In order set the
  • Drive
  • Folder
  • Format (jpeg)
  • File name

30
ProcLib
  • Procedure Library crib notes to remind you and
    your co-workers how to accomplish a given task
  • See my minimum requirements and examples on
    course Web Page

31
Additional Icons
  • Take good notes then review them and make them
    better
  • Wherever you work you will be doing this the rest
    of your life
  • Good skills at this will lower you blood pressure
    and pay big bucks
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