Geography Reference
In-Depth Information
Census Blocks 2000 (1.2 MB) and Line Features—Roads (2.0 MB). At the bottom of the page,
click Proceed to Download.
After a brief wait you will be told that your data file is ready. Click Download File. 7
Here is a procedure that worked in Internet Explorer:
Click Save As. In the Save As window navigate to
Day_Care_Data in
___IGIS-Arc_ YourInitials
Don't change the filename. Press Save. When the download is complete, close all browser
functions.
Using Firefox the procedure is similar. Firefox may not be configured to allow you to specify
the download the file location. You may have to find it and copy it to the Day_Care_Data
folder.
16. With the operating system, examine the Day_Care_Data folder. You should find a ZIP file there
with a name something like
at_tigeresri1234567890.zip
Unzip the file, using either a commercially available unzipping program (like WinZip or
PKZIP) or the unzipping facility in Microsoft Windows (right-click the zip folder, then select
Extract All). Unfortunately the structure of downloads from Esri is somewhat like Russian
nested dolls: You now have two additional zip files to contend with. Unzip the folder
blk0047093 (the census block file), and you should get the three basic components of
a shape file:
tgr47093blk00.dbf
tgr47093blk00.shp
tgr47093blk00.shx
(What is 47093? Tennessee is state number 47, and Knox County is county 93 in the state,
according to the government's FIPS classification).
Also unzip the roads folder lkA47093.zip to produce tgr47093lkA.dbf, tgr47093lkA.shp, and
tgr47093lkA.shx.
17. Back in ArcCatalog, click the Folder Connections entry and refresh the Catalog Tree. Find the
two shapefiles somewhere in the tree of Day_Care_Data. If necessary, move them directly into
7 You should probably find out where your browser is going to put the files.
 
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