Holocene Evolution, OFR 01-076
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DATA TIPS This project used ESRI's products (Arc/Info and ArcView) to do the final processing of these data. Although queries and displaying of the data is very simple in any of ESRI's software programs, GIS software is not necessary for all the data presented on the CD-ROM. The following sections might provide useful information:
Seismic-reflection profiles - The downsampled seismic-reflection profiles are contained in HTML documents with both the interpreted as well as uninterpreted profiles in a single HTML document and can be viewed with any web browser. These HTML files reside in the directory htmlseis, or can be accessed from the Data page. In addition to the HTML's, the individual JPEG images are contained on this CD-ROM in the directories under htmlseis and can be viewed with any compatible software.
All other data on the CD-ROM requires and ESRI compatible data reader to view the data directly. This could be ArcView, ArcGIS, or ArcExplorer.
FREE GIS DATA BROWSER- for those people who don't have a GIS data browser on their computer, a free viewer (ArcExplorer) is available from ESRI ( URL: http://www.esri.com): ArcExplorer is limited to Microsoft Windows operating systems and has versions for Windows 95/98 or NT.
And if you are already ArcView compatible...
The root directory of the CD-ROM contains an ArcView project file called dataview.apr (right-click to download) which was created on a Windows2000 system using Arcview 3.2. When using the CD, either double-click on the filename to launch ArcView, or open ArcView version 3.1 (or higher) and load the project. The project file has been modified to reflect relative pathnames to files, so it should work from the CD-ROM drive, regardless of the assigned drive letter. However, this project files contains grids and requires the user have the Spatial Analyst extension to open the project. For those users who have ArcView, but not Spatial Analyst, open the ArcView project file in the root directory of the CD-ROM entitled datapart.apr (right-click to download). This ArcView project does not contain any of the gridded surfaces. Those grids can be loaded as images, but because the grids are floating point grids the default colormap loaded is grayscale which does not reveal many of the details of the surfaces.
Within the ArcView project, the seismic tracklines
are hotlinked to the html documents containing the seismic-reflection
profiles. For these hotlinks to work, the user must supply information to
the ArcView project regarding data location. When the ArcView project is
first opened, the user is queried as to the location ArcView project file (root
directory). If the file is read from the CD-ROM, then the drive letter of
the CD-ROM is what needs to be filled in. If the whole contents of the
CD-ROM are copied to the hard disk, then this directory information needs to be
entered at the prompt. This procedure only works of the directory
structure of the CD-ROM is kept in tact when moved to the hard disk. This
does not mean the CD-ROM contents have to be copied to the root directory of the
hard disk, but simply that wherever copied, the CD-ROM contents maintain their
directory structure.
- If you want to download the seismic-reflection profiles from the CD-ROM, simply copy them from their directory on the CD-ROM to the location of your choice. The data listing indicates the location of specific files.
- ESRI grid files cannot be copied directly to a hard drive unless the whole grid directory and all subdirectories are copied. To copy an individual grid to another location, use ArcView's data manager.
- Although shapefiles can also be copied directly to disk, care needs to be taken to ensure all of the files necessary to open each shapefile are transferred. For this reason, it is recommended that the shapefiles be transferred using ArcView's data manager.
