Introductory Exercises for GIS Using ArcMap & ArcCatalog

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From the toolbox display, select “Fields” from the “Data Management Tools”Select “Add Field”Select the “Lakes” shapefile from the “Input Table” dropdown listName the new field “Name” under “Field Name”Select “TEXT” as the “Field Type”. The many types of fields that can be used are described in theright-hand help screen in the “Add Field” tool.Click “OK” to run the toolOpen the attribute table for the Lakes shapefile. There is now a blank field for Name that we canpopulate.Select “Start Editing” from the “Editor” tool dropdown list.In the Lake attribute table, click in the cell we want to fill under the “Name” field so that the cursoris blinkingType “Beseck Lake” in the cellIn the “ID” field, enter “1”. This will allow you to give every polygon you create a unique IDnumberSelect “Save Edits” from the “Editor” tool dropdown list, then select “Stop Editing”Congratulations, this concludes the first part of this exercise. Save your work and continue to part two.18
Part II: Locating Prime Farmland in MiddlefieldImportant Topics Covered• Examining the Attributes of Map Features• Displaying Specific Fields• Creating an Effective Representation of the Data• Using the Dissolve Function• Using the Buffer Function• Using the Intersect Function• Using the Union Function• Exporting the MapExamining the Attributes of Map FeaturesIn order to understand the features on the Soil layer you must look at the table where this attributeinformation is stored. Ensure that the Middlefield Soils layer is turned on (box is checked in table of contents) Open the attribute table for the Middlefield Soils layer (see instructions from Part I) Resize the table window so that more fields (columns) are visibleEach attribute table is comprised of rows (termed records) and columns (termed fields). Each recordrepresents a feature in the layer. Each field stores attribute information about a particular record. Therelationship between records and the features in the layer allow information to be selected in the layer.Someone has already created a field called “Farmland” that classifies the various soil types according totheir agricultural productivity. You will create a map that displays this information.Displaying Specific FieldsIt may be necessary or desirable to change which field of an attribute table is used to display the data inthe map view. This is easily defined and changed using the layer “Properties” window.Close the TableOpen the layer Properties for Middlefield Soils by right clicking on the layer title in the table ofcontents and selecting “Properties”Among the tabs in the Properties window, select “Symbology”. This tab allows you to changehow the data are displayed on the map.From the “Show” menu on the left side of the window, select “Categories”, then “Unique Values”.Select “FARMLAND: from the “Value Field” dropdown list, then click “Add All Values” at thebottom of the window. This will add all of the values from the “FARMLAND” field to the maindisplay window.Make sure the box next to “” is unchecked, then click “OK” to change the mapview.19
Page 1 and 2: Introductory Exercises for GIS Usin
Page 3 and 4: Now scroll to the section labeled
Page 5 and 6: Using ArcCatalogArcGIS shapefiles c
Page 7 and 8: Click “Add”, then “OK, then
Page 9 and 10: Navigate to the correct directory a
Page 11 and 12: Notice that ArcMap asks whether you
Page 13 and 14: In the toolbox window, select “Co
Page 15 and 16: There are several lakes found throu
Page 17: Click on the edge of Beseck Lake in
Page 21 and 22: Prime Farmland Soils Prime Farmlan
Page 23 and 24: You have now located and effectivel
Page 25 and 26: Choose Aggregated Farmland and Buff
Page 27 and 28: You have now identified the most su
Page 29: Each element can be edited individu

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