--- Begin Forwarded Message ---
Date: Mon, 13 Jul 1998 09:49:59 -0700 (Pacific Daylight Time)
From: Jean Kan <[log in to unmask]>
Subject: Re: Great American History Machine <fwd>
Sender: [log in to unmask]
To: Jennifer Stone <[log in to unmask]>
Cc: [log in to unmask]
Reply-To: Jean Kan <[log in to unmask]>
Message-ID: <[log in to unmask]>
----
Jenny,
Our cataloging record (partial display below) shows the imprint of
U. of Maryland at College Park. Larry is right; GAHM data is not
compatible with ArcView. However, in order to make GAHM’s
tabular data useful in ArcView you would need to use GAHM in
conjunction with HUSCO (Historical U.S. County Boundary files, $333)
which contains useable boundary files in ArcView. Here are the steps
that outline the ArcView GIS use of these two products:
1. Export table in GAHM to .csv file.
2. Open .csv file in Wordpad. (delete any spaces between rows)
3. Save as a .txt file.
In Arcview:
4. From project window, select "add table" and specify type as .txt.
5. Open .txt file, and "export" and save in the hard drive as a dBase file (.dbf)
6. Bring out the .dbf in ArcView using "add table".
Up to this point you have only a GAHM table in ArcView which can’t produce
a view with correct historical county boundaries. So, the next step
is to join the tables of HUSCO’s boundary files with GAHM’s tabular
files. In order to join the 2 tables successfully you would need to
resolve the problem of case differences between tables from these 2
products.
7. With the .dbf table open, select "county name" field
8. Go to "field" menu and select "Create index"
9. Go to "table" menu and select "start edit"
10. With county field still selected, go to "field" menu and select "calculate"
11. In the pop-up dialog box, double-click "county" and "Ucase". All county names
should become upper-case.
12. Go to "table" menu select "save edits" then "stop editing"
Here, you are ready to bring in the Husco boundaries in a view in ArcView.
13. With county names all in upper-case, you are now ready to join the GHAM
table to the HUSCO table.
After creating a "joined" table, it is a good idea to convert it into a new table that
doesn’t require ArcView to perform a "join" each time the table is
opened. This will save you time in the long run:
14. In the view, select the theme that represents the Joined table. Use the "select" tool
to highlight the entire theme drawing in the view.
15. Go to "theme" menu, select "convert to shapfile"
16. Delete the old theme and its table.
Hope that helps. The above procedures were devised and tested by Heather Murapa,
our GIS specialist. In case you need more detailed procedures please
feel free to contact Heather ([log in to unmask], (650)
725-9179).
HUSCO file is created by Dept. of Geography & Anthropology, Louisiana State
University.
************************************************************
Partial display of GAHM:
TITLE: The great American history machine [computer file] : an interactive
atlas of the 19th and 20th century : United States social and
political history.
At head of title: GAHM
Title on title screen: History machine
Computer programs and data.
IMPRINT: Program version 2.0; Data & Map Library version 1.1. College Park,
Md. : ePress Project, Academic Software Development
Group, Computer Science Center, University of
Maryland, c1995.
1 computer optical disc : col. ; 4 3/4 in. + user manual (28 p. :
ill. ; 28 cm.)
OTHER: University of Maryland at College Park. Academic Software Development
Group.
******************************************************************
Partial display of HUSCO:
TITLE: The historical United States county boundary files. Vols. I & II,
1790-1970 [computer file]
Also known as: HUSCO
Computer data and programs.
IMPRINT: Scales vary; Albers Equal Area projection; (N29.5'--N45.5'). Baton
Rouge, LA : Dept. of Geography & Anthropology, Louisiana State
University, c1996
7 computer disks : 3 1/2 in. + instruction sheets (5 sheets)
*******************************************************************
On Thu, 9 Jul 1998 14:27:21 -0400 Johnnie Sutherland
<[log in to unmask]> wrote:
> --- Begin Forwarded Message ---
> Date: Thu, 9 Jul 1998 10:04:53 -0700 (PDT)
> From: Jennifer Stone <[log in to unmask]>
> Subject: Great American History Machine
> Sender: Jennifer Stone <[log in to unmask]>
> To: [log in to unmask]
>
> Reply-To: Jennifer Stone <[log in to unmask]>
> Message-ID:
> <[log in to unmask]>
>
>
> Greetings, all. Has anyone ever used this?
>
> Great American History Machine
> The Great American History Machine (GAHM) provides data profiles useful in
> social science research. GAHM allows you to select data sets tailored to
> your specific inquiries. For example inquiries can be constructed for
> population, literacy, education, slavery, housing, voting, immigration and
> many other social science topics. Data provided includes 18th, 19th and
> 20th century data, including election returns and census data.
>
> I can't seem to find much more information than that. I know it can make
> maps, but can data be exported in other formats or imported into existing
> programs such as ArcView? Does anyone know who the publisher is?
>
> Thanks!
>
> Jenny Stone
> ___________________________________
> GIS Librarian * Map Collection
> University of Washington Libraries
> Box 352900 * Seattle, WA 98195-2900
>
>
>
>
> --- End Forwarded Message ---
Jean Kan (650)725-1103
Branner Earth Sciences Library
Stanford University
Stanford, CA 94305-2210
--- End Forwarded Message ---
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