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spt's Introduction

SPT: Slocum Power Tools

A library of Matlab routines for loading, manipulating and visualizing Slocum glider data files

John Kerfoot
Institute of Marine & Coastal Sciences, Rutgers University
[email protected]
(848) 932-3344

Documentation for this toolbox is available on the Wiki.

Background

This toolbox provides 2 core classes, Dbd and DbdGroup, which provide a mechanism for manipulating individual data files as well as groups of data files, respectively. There are also a variety of utility routines for, among other things:

  • Conversion of Matlab dates to unix dates
  • Convertion of NMEA GPS coordinates to and from decimal degrees
  • File operations
  • Exporting data to a variety of data structures and file formats
  • Plotting data sets

The toolbox currently uses the CSIRO Matlab EOS-80 Seawater Library to derive oceanic properties from the raw glider measurements.

A copy of the last stable version can also be found here.

Development of the CSIRO Matlab EOS-80 Seawater Library toolbox has been stopped in favor of the Gibbs SeaWater (GSW) Oceanographic Toolbox of the International Thermodynamic Equation of Seawater (TEOS-10), which can be found here.

As of August 2014, I have not made the switch to the GSW toolbox.

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spt's Issues

DbdGroup: Calculate distance along track

Write function for calculating distance along track of a DbdGroup instance. Will require interpolation of gps fixes across the entire group, not by Dbd instance.

writing a trajectory netcdf file

Are there more detailed instructions as to how to create a netcdf file with all the data from a mission (not just single profile files) ? I've tried to follow the rough instructions supplied in the wiki, https://github.com/kerfoot/spt/wiki/Writing-Glider-Trajectory-NetCDF-Files , but am having some issues.

I can create a DbdGroup, but then how do I map the netCDF variables to the dbd sensors ?

I've downloaded the trajectory template from https://github.com/IOOSProfilingGliders/Real-Time-File-Format/tree/master/template , and do I then create an instance of the GTrajectoryNc by giving the path to the trajectory template ?

I'm a little lost after that, any guidance would be appreciated.

cross-section plotting

Undefined function 'min' for input arguments of type 'matlab.graphics.axis.Axes'.

Error in plotDbdGroupSection (line 371)
data_ax = min(ax);

dbds2dbdgroup error

Undefined function or variable 'fprint'.

Error in dbds2DbdGroup (line 362)
fprint('%s: File %s not found.\n',...

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