File: HOW2USE.TXT Date: September 28, 1995 ************************************************************************** INTRODUCTION This CD-ROM is one of a series produced by the U.S. Geological Survey (USGS). This series contains digital raster graphic (DRG) images of USGS standard series quadrangle maps of the United States, its Trusts, and Territories. The DRG images contained on this disc are identified in DRG_LIST.TXT located in the \DOCUMENT directory. The data contained on this disc were produced through an Innovative Partnership agreement between The Land Information Technology Company, Ltd., of Aurora, CO, and the U.S. Geological Survey. ************************************************************************* MENU SYSTEM This CD-ROM includes a text-based user interface menu system for MS-DOS compatible computers. The interface facilitates access to, and use of, all text files. To invoke the user interface from the system prompt, enter: DRG (in either uppercase or lowercase) ************************************************************************** IMAGE COMPRESSION CD-ROM's are capable of storing approximately 650 megabytes of digital information. It was necessary to compress each image file to facilitate distribution on one disc. All data files on this disc were compressed using TIFF PackBits software. For information about the compression software and its use, please refer to TIFF_60.TXT in the \DOCUMENT directory. ************************************************************************** VIEWING SOFTWARE This CD-ROM includes two software packages that will enable the user to view all DRG images stored on this disc. Windows-based ArcView Version 1.0 software was furnished by Environmental Systems Research Institute, Inc. (ESRI). DOS-based Aerial View Lite software was furnished by Gary Mart. Information about the viewing software packages and their uses may be found in the ARC_VIEW.TXT and AV_LITE.TXT files in the \ARCVIEW and \AV_LITE directories. Any use of trade, product, or firms names is for descriptive purposes only and does not imply endorsement by the U.S. Government. ************************************************************************** DIRECTORY STRUCTURE For those who prefer to explore the contents of this disc without using the menu system, or for users of operating systems other than MS-DOS, a generic example of the directory tree is shown below. \ | DRG.BAT MENU.PDF | |---AV_LITE | AV_LITE.TXT AVL_INST.BAT AVL_ZIP.EXE | |---ARCVIEW | ARC_VIEW.TXT ARC_INST.BAT ARCVIEW1.EXE | |---ACROBAT | ACROREAD.EXE ACROBAT.TXT ACROINST.BAT | |---DATA | DRG Image files identified by .TIF extensions. | Associated World files identified by .TFW extensions. | |---INDEX | Map Index file(s) with .TIF extensions. | ArcView 1.0 Views with .AV extensions. | |---DOCUMENT | DRG_LIST.TXT DRG_NAME.TXT DRG_PKG.TXT DRG_STD.TXT | MAPINDEX.TXT READ_ME.TXT TIFF_60.TXT USGSINFO.TXT | GEO_TIFF.TXT DOS_MENU.TXT HOW2USE.TXT TIFF_60.PS | |---DOCU_PDF | (.PDF format of all ASCII text files on this CD-ROM, | except DRG_LIST.TXT) | HOW2USE.PDF DRG_NAME.PDF DRG_PKG.PDF DRG_STD.PDF | MAPINDEX.PDF READ_ME.PDF TIFF_60.PDF USGSINFO.PDF | GEO_TIFF.PDF DOS_MENU.PDF AV_LITE.PDF ARC_VIEW.PDF | ACROBAT.PDF | |---DOSMENU | ARCMENU.DAT AVLMENU.DAT BROWSE.EXE VIEWMENU.DAT | DOCUMENU.DAT GSMENU.EXE MAINMENU.DAT DRG_INFO.DAT | ACROBAT.DAT | +---METADATA Federal Geographic Data (Metadata files) identified by .FGD extensions (one for each data set). Files with .BPT extensions (not shown) are used by the text browser to index .TXT files. ************************************************************************** DESCRIPTION OF TEXT FILES DRG.BAT - This batch file is used to start the GSMENU software menu. HOW2USE.TXT - (This file) Describes the disc directory structure and the contents and location of all text and data files. MENU.PDF - Adobe PDF format menu. This file contains links to other files in .PDF format. The linked files contain the same information as the files in the \DOCUMENT directory. README.TXT - DRG product information overview covering: Product Liability Description of a DRG Displaying a DRG Georeferencing information Product specifications DOS_MENU.TXT - Brief description of the text-based user interface or menu system, including instructions on its use. DRG_LIST.TXT - Sorted list of all DRG images contained on this disc. The list contains the data set name (DSN), map scale, quadrangle name, State(s), and the size (bytes) of each image. THIS FILE IS NOT AVAILABLE IN .PDF FORMAT. DRG_STD.TXT - Standards for DRG's, including the metadata template. GEO_TIFF.TXT - GeoTIFF Revision 0.2 specifications. TIFF_60.TXT - TIFF Revision 6.0 specifications. AV_LITE.TXT - Information about the Aerial View Lite viewing software package, including installation instructions. ARC_VIEW.TXT - Information about the ArcView Version 1.0 viewing software package, including installation instructions. ACROBAT.TXT - Information about the ACROBAT Reader software package, including installation instructions. DRG_NAME.TXT - Describes the standardized DRG data set names, including illustrations of file naming schemes for each map series. DRG_PKG.TXT - Describes the packaging specifications for DRG products on CD-ROM. MAPINDEX.TXT - Describes the functionality of the map index images included on this disc. These images provide useful map reference information. USGSINFO.TXT - Provides information about the points of contact for the DRG program and the nationwide network of Earth Science Information Center (ESIC) offices. **************************************************************************