Great Lakes Data Rescue Project - Lake Erie and Lake Saint Clair Bathymetry

 

VECTOR FILE INFORMATION

The contours were scanned and vectorized at compilation scales ranging from 1:2,500 to 1:100,000.

ARC/INFO® interchange files

The ARC/INFO® interchange files were created with the Arc (version 7.2.1) command: 'export cover <input cover> <interchange file>'(the UNIX command 'unix2dos' was used to create the PC formatted interchange files) and can be imported with the Arc command: 'import cover < interchange file> < output cover> '.
All export interchange files are upwardly compatible, therefore problems may occur importing these interchange files to an earlier version of ARC/INFO®.

ASCII XYZ files

The ASCII XYZ files contain multiple longitude (decimal degrees), latitude (decimal degrees), and depth (in meters) triplets. Each individual contour segment is separated by a ">".

 

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