llslice - Sample variable data between user specified (latitude, longitude)points.

SYNOPSIS

llslice  [ parameter=value ... ]  [ inputfile outputfile ]
llslice  [ parameter=value ... ]  [ inputfile ... outputfile ]

Parameters are: include_vars, latitude_1, longitude_1, latitude_2, longitude_2,

llslice takes one or more input datasets and samples them based on user specified endpoints, (latitude_1, longitude_1), and (latitude_2, longitude_2). For a given variable, these endpoints are converted to variable dimension coordinates (x1, y1) and (x2, y2), and the variable is sampled at all (x, y) points on the line connecting (x1, y1) and (x2, y2).

For each input dataset, an output dataset is created. The user specifies which variables from each input dataset to sample and then write to the output.

PARAMETERS

include_vars

This parameter specifies which variables in the input datasets to sample and write to the output datasets. If this list of prefixed with a minus sign, all variables, except those listed, will be sampled. Wildcards * and ? are allowed. The default is to include all variables in the input datasets.

latitude_1, longitude_1

These two parameters specify the first endpoint. Values must be specified using standard latitude and longitude formats. See formats. There are no default values.

latitude_2, longitude_2

These two parameters specify the second endpoint. Values must be specified using standard latitude and longitude formats. See formats. There are no default values.

EXAMPLES

None supplied.

SEE ALSO

llpoints, sample, formats

NOTES

An alternative to using llslice is to use llpoints to generate a list of (latitude, longitude) points between the endpoints, and then to use sample to sample the input datasets at the list of points.

Last Update: $Date: 1999/05/10 20:14:45 $