Preface Introduction Getting Started About the CD-ROM Contacts

About the CD: File and Data Structure

File and Data Structure
Data Dictionary
Projections
Legend

File and Data Structure describes the organization of the CD-ROM from a directory perspective.

The CD-ROM is ISO9660 compliant that means the CD-ROM can be read on both a Windows PC or a UNIX workstation.

Directory Structure
Below is a look at the directory structure at the root level.

Summary of directories
Directory
of \
      cf AUTOPLAY
      of DATA
            of SRV
            of SHP
            of SECGIF
            of E00
            of ARC
      of DOC
      of SOFT
For a complete look at the directory structure click here.

At the root level there are 4 directories.

1. AUTOPLAY:contains files and apps for CD-ROM to automatically open the splash page so the user can start viewing the data (available only for Windows users).

2. DATA: contains all the data pertaining to the Digital Surficial Geology such as geologic contacts and units. In this directory there are 5 sub-directories organized based on file formats.
     SRV: data files in for SurView
     SHP: shape file format for ArcView
     SECGIF: images of stratigraphic sections linked for use in SurView
     E00: Arc/Info export file
     ARC: Arc/Info workspaces and coverages
Digital Surficial Geology data sets in directories SRV, SHP, E00, and ARC are organized based on NTS map area. An example of the Shape file organization is listed below. Notice that the directory below SHP have sub-directories with the prefix NTS plus the 1:50 000 NTS map sheet number, e.g., 82J09.

Summary of directories
Directory
of \
      cf AUTOPLAY
      of DATA
            of SHP
                  cf NTSALL
                  cf NTS82G08
                  cf NTS82G09
                  cf NTS82G16
                  cf NTS82H03
                  cf NTS82H04
                  cf NTS82H05
                  cf NTS82H06
                  cf NTS82H12
                  cf NTS82H13
                  cf NTS82J01
                  cf NTS82J08
                  cf NTS82J09

Within these sub-directories are the files named by a consistent naming scheme used for each data formats. See File Naming Scheme for more information below.

3. DOC: all files related to the documentations.

4. SOFT: contains software such as SurView (runs only in Windows)

File Naming Scheme
The file naming scheme is consists of a 3 letter prefix plus the NTS number.
For example, the file called GEO82G08, is listed under the NTS82G08 directory and contains the surficial geologic units.
Here is a list of all the files that represents the Digital Surficial Geology data set:

Files
GEO<NTS#>
CNT<NTS#>
LIN<NTS#>
SUR<NTS#>
ESK<NTS#>*
MLT<NTS#>*
MWS<NTS#>*
ATT<NTS#>
CHM<NTS#>
CHT<NTS#>
PEB<NTS#>
SSC<NTS#>

* Available only for SurView
Go to section Data Dictionary for more details.
Note that the file name will have different extensions based on their data format, .e.g, for Arc/Info export file formats will have files that have the extension *.E00.

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