gcon2con

1. USAGE

gcon2con

2. DESCRIPTION

Reads a generalized contour file, usually obtained from

xtract(1), and create a contour file with four columns. By specifiying a file with a list of ship heading, you can rotate the vectors so that the positive x-axis is starbord to the ship track, and positive y-axis is along track. For an explanation of generalized contour files, see con2con(1).

3. PARAMETERS

The following parameters must be edited:

gcon_file

Name of generalized contour file.

con_file

Name for output contour file.

nav_file

Name of a file with time and heading columns for rotation of contour velocities. Set it to the empty string to avoid this.

t_nav

Number of the column in navigation file containing time information.

h_nav

Number of the column in navigation file containing heading information.

t_gcon

Number of column in gcon_file containing time information. This is used to synchronize the generalized contour data with navigation information.

i_gcon

Vector of indexes to columns in gcon_file to print in the output file. To generate a contour output,this will be a list of column numbers like [ x y u v ].

scale

Multiply velocities by this factor.

4. AUTHORS

Pierre Jaccard, Geophysical Institute, University of Bergen, 1999