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Importing your Own Data To display in GIS Lab 4a: (Table Join) Mapping By State, County, or Nation
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Lab Overview In this lab you will: 1.Prepare the data you obtained for your portfolio so that it can be imported into Arc GIS mapping software. 2.Set up your own personal geodatabase which you can use to store all data you would like to map. 3.Import your portfolio Data into your geodatabase 4.Add your portfolio Data to an appropriate map (this involves joining 2 tables) 5.Selecting how you want the data to be visually represented
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1. Preparing the data you created in lab 4 so that it can be imported into Arc GIS mapping software.
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Create an Excel Spreadsheet that Lists Data By State Make sure that your variable names are along the top row (top 1 row only) and that the state names are down the side column (A). There should be no blank rows above the data and no blank columns to the left.
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Side Note: Make sure that the primary key (such as state, county, country etc) that you will be linking to in the map are spelled exactly the same way as in the map. (the next 4 slides review this)
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To examine how the data is stored for a layer, right click on the layer, Select Open Attribute Table
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It looks like a spreadsheet!
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Highlight everything (by column) Options, Export, as Text (dbf may work better for your computer) Then you can retrieve these labels and find data that corresponds with them.
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Side Note ends: Continue from here
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Select the Data in the Sheet You Want
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Save As…(give it a name) Save As Type: DBF IV
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OK to Only Active Sheet
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OK to Format Change
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2. Setting up your own personal geodatabase which you can use to store all data you would like to map.
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Next Open Up ArcCatalog
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File, Connect Folder
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Select your H and the Specific Folder you want to put it in.
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Now notice your H is in the left pane, Click on the H drive
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Right Click in Blank Pane on Right hand side, New Personal GeoDatabase
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Name it
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Skip the next few slides (it seems to work without them) i.e. skip to part 3 of instructions
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Right Click on it, New, Feature Class
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Name it, Next
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Default
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Shape, Spatial Reference, 3 dots
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Select, Geographic Coordinate Systems
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North America, North American Datum 1927
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Apply, OK, Finish.
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Resume with instructions
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3. Importing your Lab 4 Data into your geodatabase
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Next Launch ArcToolbox
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Pick: Export from Table, Table to Geodatabase
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If it does not appear as in the previous slide, use the following…
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You may later find it helpful to shorten the data name here (so variable names are shorter, since this is added to existing variable names). To do this, copy and paste it here and give the pasted version a short name like fhdata.
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i.e. Shorten the target name in the box that opens
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****Be sure that table name is short and no spaces in it!!!! Or else it won’t convert.
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For Input Table, Select the DBF 4 Data you saved in Excel (click the file folder)
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For Output, select your new personal geodatabase
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Press OK and watch it convert
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4. Adding your Lab 4 data to an appropriate map (this involves joining 2 tables)
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Open Arc Map
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Select the Existing Map for this Course
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Open it, Save as…an ArcMap Document –not template-(pick your own name) in your H Drive
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Select + by the Entire Us
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This expands the selection
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3 SLIDES EXCERPTED FROM HERE BECAUSE NO LONGER NEEDED WITH THIS SOFTWARE UPGRADE
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Insert, Data Frame
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Right Click on New Data Frame, Add Data
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Select your original data (again- but this time it is inside your geodatabase!), add
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Notice it is now in the left panel
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Right Click on it and Open
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This will show that you have imported the Data into the Map
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Now you must join the data you imported with the shapes of the map that already exist in our class template.
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Right Click on United States, Joins and Relates, Join
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Choose State Name for 1
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Select Folder and Browse and Add your new Data for 2
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Choose State for 3, OK
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Now Right Click and Open for the US Shape File
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Notice that the New data has been joined with the existing state shapes by matching state names (nulls appear where no match was found –check these for mistakes due to formatting)
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5. Selecting how you want the data to be visually represented
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Next we will represent the imported data by color scheme
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Right click on US, Properties
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Select the Symbology Tab
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Select Quantities, Graduated Colors
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Select a Variable
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Select the number of (different) classes of colors you prefer, then to the right select classify
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Classify allows you to adjust the range of values within each color
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Select Apply and watch the map go from this….
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…..To this.
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Or This
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To make sure it displays your graduated symbols… Go to the legend on the map, Right Click, Properties,
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Make sure only the layer you used in your join is showing
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To copy and paste maps to powerpoint or MS Word, right click on it, copy map to clipboard. Go to desired destination, paste.
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Now you can go ahead and follow the same procedure for maps and data of your own choosing. You will both present your maps and explain them informally to the class and hand the following: 1.print-outs of your maps and the sources of your data. 2.You will save your digital maps and data and sources to the following folder. Create a subfolder for your work that includes your name in it. L:\CourseInformation\Ridzi\Utility Folder\Program Evaluation and Policy Analysis Lab 4a Submission Folder
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If you want only a section of a larger map…
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Right Click, Open Attribute Table
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Options, Select By Attributes
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Double Click on Variable (state Name) = Get Unique Values, select the value you want (NY)
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Apply
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If you browse the spreadsheet now you will see all NY values are selected.
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Now return to the side bar, right click, selection, create layer from selected features.
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Double click on the counties selection and re-name it “New York Counties” or as appropriate for your purposes.
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Trouble shooting
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If H or L drive does not work, use the C.
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If No scale is included on your map to show color meanings Insert, Scale, Make sure the layer that you joined to is included.
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The following 3 not needed
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Click add Data
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Open the Geodatabase you created
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Select the Data that you imported into the Geodatabase (ie your now converted original excel data), Add
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