flagdata

1. SYNOPSIS

[data, flags] = flagdata(data, lim, options )

2. DESCRIPTION

This function parses the input data and flags them as bad according to specified limits. A limit is specified by a vector with the following values:

1. Minimum value allowed
2. Maximum value allowed
3. Kind of limit to apply. Possible values are

   
   
   

   -1

   Data must lie outside intervall specified by minimal and maximal values.

   
   
   

   +1

   Data must lie inside intervall specified by minimal and maximal values.

This function returns a list of flags for each data being tested. These have the following meaning:

-Inf

Corresponding data was less than minimal value,and limit mode was inside.

+Inf

Corresponding data was more than maximal value,and limit mode was inside.

1

Corresponding data passed the limit test.

0

Corresponding data was inside intervall,but limit mode was set to outside.

NaN

Corresponding data was already set to NaN on input.

3. PARAMETERS

data

Array (MxN) of M variables,with N different values that should be flagged.

lim

Array (Mx3) specifying the limits for the M variables.

options keyword , value

The rest of the arguments is a list of options. See below for implemented options.

4. OPTIONS

Implemented options are:

-hdg vector

Non-NaN values in the specified vector correspond to column numbers in data containing heading values. These are converted within 0 and 360 before applying the limit tests.

5. RETURNS

data

Array (MxN),with all data not passing the limit test set to NaN.

flags Array (MxN) with the flags valeus resulting from the limit tests

as described above.

6. AUTHORS

Pierre Jaccard, Geophysical Institute, University of Bergen, 1999