skip to navigation
skip to content

Not Logged In

ctd 0.2.1

Tools to load hydrographic data as DataFrames

Tools to load hydrographic data into pandas DataFrame (and some rudimentary methods for data pre-processing/analysis).

This module can load SeaBird CTD (CNV), Sippican XBT (EDF), and Falmouth CTD (ASCII) formats.

Quick intro

pip install ctd

and then,

kw = dict(compression='gzip')
fname = './test/data/CTD/g01l06s01.cnv.gz'
cast = DataFrame.from_cnv(fname, **kw)
downcast, upcast = cast.split()
fig, ax = downcast['t090C'].plot()

We can do better:

from ctd import DataFrame, lp_filter, movingaverage
kw.update(below_water=True)
cast = DataFrame.from_cnv(fname, **kw)
downcast, upcast = cast.split()
temperature = downcast['t090C'].despike(n1=2, n2=20, block=100)
temperature.index = lp_filter(temperature.index.values)
temperature = temperature.bindata(delta=1)
temperature = temperature.interpolate()
temperature = temperature.smooth(window_len=21, window='hanning')
fig, ax = temperature.plot()
ax.axis([0, 30, 2000, 0])
ax.set_ylabel("Pressure [dbar]")
ax.set_xlabel(u'Temperature [\u00b0C]')

Not so quick intro

Check out the IPython Notebook.

Author

Filipe Fernandes

Changelog

Version 0.2.1

  • None is assigned to position data when it is not available.

Version 0.2.0

  • Fixed compatibility fir 0.13.

Version 0.1.0

  • First version derived from oceans package.
 
File Type Py Version Uploaded on Size
ctd-0.2.1.tar.gz (md5) Source 2014-04-08 14KB
  • Downloads (All Versions):
  • 6 downloads in the last day
  • 51 downloads in the last week
  • 149 downloads in the last month