Introduction | Geomorphology | Raster data files | Vector data files | Images

VECTOR FILE INFORMATION

Most of the lake was digitized at 1:250,000 scale. The exceptions are the Mackinac Channel and the Grand Traverse Bay which were edited at higher resolutions.

ARC/INFO® interchange file

The ARC/INFO® interchange files were created with the Arc (version 7.0.4) command:
'export cover < input> < interchange file> none'
and can be imported with the Arc command:
'import cover < interchange file> < output> '
All export interchange files are upwardly compatible, therefore problems may occur importing these interchange files to an earlier version of ARC/INFO®.

ASCII XYZ file

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

Introduction | Geomorphology | Raster data files | Vector data files | Images