000read.me file that describes USGS OF99-438,  10/7/1999, pd

Lewis, R.S. and Derkey, P. D., 1999, Digital geologic map of part of the Thompson Falls 1:100,000 quadrangle, Idaho: U.S. Geological Survey Open-File Report 99-438, 32 p.

This report describes the contents of a digital data set (approximately 3 MB) which consists of Arc/Info Export format files and associated macro programs.  A page-sized, color version of the digital geologic map is included in the report.  The data set also includes macro programs and complete plot files for creating a paper copy of the map at a scale of 1:100,000.  The data set is available on the World Wide Web at http://wrgis.wr.usgs.gov/open-file/of99-438/of99-438.html.  It is also available via anonymous FTP from: wrgis.wr.usgs.gov, in the directory: pub/open-file/of99-438.

Requirements:  A networked computer system is required to copy the data set from the host computer across the Internet.  A geographic information system (GIS) capable of importing Arc/Info Export format files is required for access to the digital files.  All plot files are stored in HPGL2 format.  The digital data set files are in UNIX ASCII format.

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Explanation of digital data files for the 'Digital geologic map of part of the Thompson Falls 1:100,000 quadrangle, Idaho,'  U.S. Geological Survey Open-File Report 99-438:  

The Thompson Falls GIS is available as four UNIX compressed TAR files: covers.tar.Z, maps.tar.Z, more.tar.Z, and amls.tar.Z, along with the report text (of99-438.pdf) in an Adobe Acrobat Portable Document File (PDF) format.

To download the GIS data files, create a new workspace in a UNIX working environment and copy the covers.tar.Z, maps.tar.Z, more.tar.Z, and amls.tar.Z files to your new workspace, and also download the of99-438.pdf file. To uncompress the filename.tar.Z files, use the command 'uncompress -v filename.tar.Z' and then to extract the files from the resulting filename.tar files, use the command 'tar -xvf filename.tar.'  

To import the Arc/Info interchange-format files into your workspace, open Arc/Info on your workstation and enter '&run 00import' at the Arc: prompt. 

Your working directory should contain the following files:
00import.aml -  Arc/Info program to import Arc/Info interchange-format files into the user's workspace.
of99-438.pdf - Open-File Report text in Adobe Acrobat Portable Document File (PDF) format. 

Primary Arc/Info EXPORT-format files (*.e00) and metadata (*.met) for the digital geology of the Thompson Falls quadrangle:

tf100k.e00 - principal Thompson Falls line and polygon geologic map coverage
tfpnt.e00 - point coverage of structural map symbols
tf100k.met - metadata file

Additional Arc/Info EXPORT-format files (*.e00) necessary to re-create the geologic map plates:

calcomp1.shd.e00 - calcomp1.shd shadeset
fnt037.e00 - font 37
fnt038.e00 - font 38
fnt040.e00 - font 40
geoscamp2.mrk.e00 - markerset for structural symbols
tfallsu11.e00 - exterior boundary of the Thompson Falls quadrangle, mathematically generated. 

Arc/Info AML, graphics, key, lineset, and text files necessary to re-create the geologic map quadrangle plates:

tf100k.aml - program that creates a graphics file (*.GRA) of the geologic map plate.
scale2a.aml - program that generates the customary and metric bar scales and representative fraction for the scales.

index_tf.gra - index map showing location of the Thompson Falls quadrangle (the mapped area) with respect to the Pacific Northwest.

tf_line.key - keyfile that generates the contact, structure and other lines in the explanation.
tf_pol.key - keyfile that generates the geologic map unit explanation.
tf_sym.key - keyfile that generates the point symbol explanation.

geology.lin - lineset file

geo.prj - a textfile used to identify real-world (geographic) coordinates - for use in adding latitude and longitude notation around the margins of the quadrangle.
u11.prj - a textfile used to identify UTM, zone 11 (with a yshift = -5,000,000) map projection - for use in adding latitude and longitude notation around the margins of the quadrangle.
tfcrd.txt - a textfile listing map credits.
tfdisc.txt - a textfile with a digital data disclaimer statement.
tfref.txt - a textfile listing map references.

Plotter calibration file:
cal.dat - the color calibration file used in the Arc/Info 'HPGL2' command to create plot files of the plates for plotting on the USGS HP650C in the Spokane Field Office.  This file is a custom file for this particular plotter.  Other plotters will require their own custom color calibration file.

Encapsulated PostScript (*.eps), Arc/Info graphics (*.gra) and HPGL2 (*.hp) files for the digital geologic map quadrangle plate (scale 1:100,000):
tf100k.gra
tf100k.hp