00:01This is Lesson 6: Conduct the analysis...
00:03...Exercise 6d: Clean up the map and geodatabase.
00:07In this exercise we have seven objectives.
00:10First, we want to simplify (clean up) the map document.
00:13Second, add descriptions to the layer properties.
00:16Third, delete any unnecessary fields from the attribute table.
00:20Fourth, add an identifier field to the attribute table.
00:24Fifth, save the layer as a layer file.
00:26Sixth, set up the map document properties.
00:29And the seventh objective is to clean up the geodatabase.
00:34This exercise begins where Exercise 6c ended.
00:37In the Table of Contents, we will begin at the top...
00:39...and remove all layers except for the following...
00:42...RecommendedSites, LARiver, LARiverBuffer, and Basemap.
00:48Next we will turn on the LARiver, LARiverBuffer, and Basemap layers.
00:53Right-click LARiverBuffer and click Zoom To Layer.
00:56To make the LARiver layer stand out more, open the Symbol Selector...
01:00...and change the color to Big Sky Blue, and change the width to 3.
01:06Next, open the Symbol Selector for the RecommendedSites layer.
01:10Click Fill Color, and then click No Color.
01:13Change the outline color to Medium Apple, and the outline width to 2.
01:19Open the Symbol Selector for the LARiverBuffer.
01:22Click Fill Color and then click No Color.
01:24Change the outline color to Medium Lilac, and the outline width to 1.5.
01:29Our first objective, to simplify our map document, has been met.
01:33Now let’s move on to the second objective, to add descriptions to the layer properties.
01:37Open the layer properties for RecommendedSites...
01:40...and click the General tab.
01:42In the Description box, type...
01:44...“These are the five sites recommended for a new park near the Los Angeles River.”
01:48Then click OK.
01:50Open the layer properties for LARiverBuffer.
01:53In the Description box, type...
01:55...“This is a 3/4 mile buffer around the Los Angeles River.”
01:59Then click OK.
02:00Now we need to delete all unnecessary fields and attributes...
02:03...from the RecommendedSites table. This is the third objective on this list.
02:08Open the Attribute Table, right-click on the FID_fivesites_identity field heading...
02:14...and choose Delete Field.
02:15Click Yes on the prompt to confirm the field deletion.
02:18We also need to delete the following FID fields...
02:21...FID_FiveSites, NEAR_FID, FID_ParkAccessZones_SpatialJoin...
02:33We are now going to move to the fourth objective...
02:35...which is to add an identifier field that can be managed.
02:38Click the Table Options button and choose Add Field.
02:41Name the field SiteID and accept the default Short Integer field data type, then click OK.
02:47Next, scroll to the end of the table.
02:49Right-click the SiteID field heading and choose Field Calculator.
02:52Double-click OBJECTID, then click OK.
02:55This is a simple expression that will assign the same values of 1 to 5 to the new field.
03:01The difference is that the SiteID is a field we can manage, while OBJECTID is not.
03:06Once the processing is complete, open the layer properties for RecommendedSites.
03:10The following steps show a detailed example for formatting fields...
03:13...to make them more readable.
03:15Click the Fields tab.
03:16In the list of fields, uncheck Shape_Length and Shape_Area to hide them.
03:21At the bottom of the list, click SiteID to highlight it.
03:24In the row of tools at the top, click the little drop-down arrow...
03:27...next to the Move Up button, and choose Move To Top.
03:30Click the Move Down button twice to move the field directly underneath Shape.
03:35Moving this field affects the layer only. In the feature class, fields are stored in the order...
03:39...in which they’re added, and this order can’t be changed.
03:42Click the PCT UNDER 18 field near the bottom of the list to highlight it.
03:46In the box on the right, under Appearance, click the word Alias to highlight it.
03:49Replace the current alias with Percent Under 18 Years.
03:54Two lines down, click Number Format to highlight it.
03:57Click the button that appears on the right to open the Number Format dialog box.
04:02In the Number Format dialog box, click the Percentage category...
04:05...then click Numeric Options.
04:07Change the number of decimal places to 0.
04:10Click OK on the Numeric Options and Number Format dialog boxes.
04:15Click Apply to apply your changes so far.
04:18Now we need to do these same steps to the ACRES, NEAR_DIST, POP2000...
04:22...MEDIAN HH INCOME, and POP DENSITY fields.
04:25Format the ACRES field. Change the alias to Acres...
04:31...and the number format to Numeric (one decimal place).
04:38Format the NEAR_DIST field. Change the alias to Feet to LA River...
04:44...and the number format to Numeric...
04:46...(zero decimal places; show thousands separators).
04:50Format the POP2000 field; change the alias to 1/4 Mile Population...
04:55...and the number format to Numeric (show thousands separators).
05:00Format the MEDIAN HH INCOME field.
05:03Change the alias to Median Household Income and the number format to Currency.
05:11Format the POP DENSITY field.
05:13Change the alias to People per Square Mile, and the number format to Numeric...
05:18...(zero decimal places; show thousands separators).
05:21Click OK to close the layer properties.
05:23In the attribute table, widen fields as needed by placing the mouse pointer...
05:27...between field headings and dragging in either direction.
05:30Close the attribute table.
05:32We can now move on to the fifth objective...
05:34...saving the RecommendedSites layer as a layer file...
05:37...so that these properties will be available for use in other map documents.
05:41At this point, all of the format settings are layer properties...
05:45...within this map document only.
05:47This is what was done to the city boundary of Los Angeles in Lesson 1.
05:51In the Table of Contents, right-click RecommendedSites...
05:54...and choose Save As Layer File.
05:56In the Save Layer dialog box, navigate if necessary to Home - ParkSite\MapsAndMore.
06:05Accept the default name, RecommendedSites.lyr, and click Save.
06:11Our sixth objective is to set the map document properties to create metadata...
06:15...(background information) about the map and to make it searchable.
06:19From the main menu, choose File > Map Document Properties.
06:23In the Map Document Properties dialog box, for the title, type...
06:27..."Los Angeles River Park Site Analysis."
06:29For the summary, type...
06:30..."Map of recommended sites for park development near the Los Angeles River."
06:35For the description, type...
06:36..."These are the five sites recommended for a new park near the Los Angeles River."
06:40For the author, type your name.
06:43For the credits, type "City of Los Angeles, Esri."
06:47For the tags, type "parks, Los Angeles River, Los Angeles"...
06:51...and include the commas to separate the tags.
06:53Near the bottom of the dialog box, check the box to store...
06:56...relative pathnames to data sources.
06:59This setting allows you to move the map document...
07:01...and its data sources to different locations without disruption...
07:05...as long as the layer paths to source data maintain the same...
07:08...directory structure relationship.
07:09Click Make Thumbnail, then click OK.
07:13Save the map.
07:15In the Catalog window, in the Home folder...
07:17...right-click Lesson6.mxd and choose Item Description.
07:21The properties you set appear in the Item Description for the map document.
07:25If you don’t see the thumbnail graphic, right-click the Home folder...
07:27...in the Catalog window and choose Refresh.
07:30Note that the Preview tab allows you to navigate the map.
07:34When you have finished exploring the various tools in the Preview tab...
07:37...close the Item Description window.
07:40We are now ready to move on to the final objective on our list...
07:43...cleaning up the geodatabase.
07:44In the Catalog window, expand AnalysisOutputs.gdb and click on it.
07:49Click the Show Next View button...
07:52...to split the Catalog window into a top and bottom pane.
07:55The geodatabase should contain eleven feature classes and one table.
07:59In the bottom pane of the Catalog window, hold the Control key and click each dataset...
08:03...in AnalysisOutputs to select it, except these two: LARiverBuffer and RecommendedSites.
08:09Right-click any of the selected datasets and choose Delete.
08:12Click Yes on the Confirm Delete dialog box.
08:16Now we’ll update the item descriptions for the two remaining feature classes.
08:19In the Catalog window, right-click the LARiverBuffer feature class...
08:23...and choose Item Description.
08:24In the Item Description window, click the Preview tab...
08:28...and click the Create Thumbnail button.
08:30Click the Description tab. In the row of buttons at the top, click Edit.
08:37In the Summary box, highlight and delete the existing text. Replace it with this...
08:41..."This dataset represents the area under consideration...
08:44...for a new park near the Los Angeles River."
08:46In the Item Description box, highlight and delete the existing text. Replace it with this...
08:51..."This dataset is a 3/4 mile buffer around the Los Angeles River."
08:55In the Credits box, highlight and delete the existing text. Replace it with this...
09:00..."City of Los Angeles, Esri."
09:02At the top of the window, click Save, and leave the Item Description window open.
09:07In the Catalog window, click RecommendedSites.
09:10Click the Preview tab and click the Create Thumbnail button.
09:14Click the Description tab and click Edit.
09:17In the Summary box, highlight and delete the existing text. Replace it with this...
09:21..."These are the five sites recommended for the new park near the Los Angeles River."
09:25In the Description box, highlight and delete the existing text. Replace it with this...
09:29..."This dataset is a subset of vacant land parcels...
09:32...one acre or larger near the Los Angeles River."
09:35In the Credits box, replace the existing text with this...
09:38..."City of Los Angeles, Esri."
09:40Click Save and close the Item Description window.
09:42Save the map.
09:44This concludes Exercise 6d, Clean up the map and geodatabase.
09:47In the next exercise, we will evaluate the results of our work...
09:51...by inspecting photographs of the sites.
Exercise 6d: Clean up the map and geodatabase
Understanding GIS: An ArcGIS Project Workbook for ArcGIS 10
Lesson 6: Conduct the analysis
Add metadata, remove extra layers from the map, and format table fields.
Book Resources are located here.
- Recorded: Oct 3rd, 2011
- Runtime: 09:59
- Views: 11810
- Published: Nov 30th, 2011
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