RSKtrim.m

Arguments

Input

-Required-

RSK
reference : channel that determines which samples will be in the range and trimmed. To trim according to time, use 'time', or, to trim by index, choose 'index'.
range : 2 element vector of minimum and maximum values to trim

-Optional-

profile : vector of profile numbers (defaults to all profiles).
direction : up, down, both (default).
channel : channels that apply the flag to.
action : NaN (default), remove, interp
visualize: show plot with original, processed and flagged data on specified profile(s)

Output

RSK

The function removes or replaces values that fall in a certain range.

The argument input `reference` could be a channel name (e.g. sea pressure), `time`, or `index`. The following input `range` is a 2 element vector of minimum and maximum values. The samples in `reference` that fall within the range (including the edge) will be trimmed. When `reference` is `time`, the range must be in MATLAB datenum format. When `reference` is `index`, obviously the range must be integer numbers.

The function provides three methods to deal with flagged data, which are:

`NaN` - replace flagged samples with NaN
`remove` - remove flagged samples
`interp` - replace flagged samples with interpolated values by neighbouring points.

Examples:

CODE

% Replace data acquired during a shallow surface soak with NaN
rsk = RSKtrim(rsk, 'reference', 'sea pressure', 'range',[-1 1], 'action', 'NaN');

% Remove data before 2019-01-01
rsk = RSKtrim(rsk, 'reference', 'time', 'range', [-inf datenum([2019 01 01 00 00 00])], 'action', 'remove');