Merge pull request #29 from ocefpaf/soundspeed

Soundspeed

Author: ocefpaf

CHANGES.txt

@@ -1,9 +1,14 @@
 Changelog
 ---------
 
+Version 0.2.4, 05-May-2015.
+
+* Added `woa_profile`.
+* Re-write of `woa_subset` to use iris instead of Pandas.
+* Deprecate 'state' option in soundspeed.
+
 Version 0.2.3, 23-Jan-2015.
 
-* Unpinned version in setup.py.
 * Several small bugs and typos fixes.
 
 Version 0.2.2, 18-Aug-2014.

oceans/__init__.py

@@ -1,6 +1,6 @@
 # -*- coding: utf-8 -*-
 
-__version__ = '0.2.3'
+__version__ = '0.2.4'
 
 __all__ = ['RPSstuff',
            'datasets',

oceans/datasets/datasets.py

@@ -7,7 +7,7 @@
 # e-mail:   ocefpaf@gmail
 # web:      http://ocefpaf.tiddlyspot.com/
 # created:  09-Sep-2011
-# modified: Mon 04 May 2015 02:30:43 PM BRT
+# modified: Mon 04 May 2015 05:44:40 PM BRT
 #
 # obs: some Functions were based on:
 # http://www.trondkristiansen.com/?page_id=1071
@@ -92,8 +92,6 @@ def woa_subset(bbox=[2.5, 357.5, -87.5, 87.5], variable='temperature',
     ...     gl.yformatter = LATITUDE_FORMATTER
     ...     return fig, ax
     >>> # Extract a 2D surface -- Annual temperature climatology:
-    >>> import numpy as np
-    >>> import numpy.ma as ma
     >>> import matplotlib.pyplot as plt
     >>> from oceans.ff_tools import wrap_lon180
     >>> from oceans.colormaps import cm, get_color
@@ -154,7 +152,7 @@ def woa_subset(bbox=[2.5, 357.5, -87.5, 87.5], variable='temperature',
     cubes = iris.load_raw(url)
     cubes = [cube.intersection(longitude=(bbox[0], bbox[1]),
                                latitude=(bbox[2], bbox[3])) for cube in cubes]
-
+    cubes = iris.cube.CubeList(cubes)
     if full:
         return cubes
     else:
@@ -225,7 +223,7 @@ def woa_profile(lon, lat, variable='temperature', clim_type='00',
     cubes = [extract_nearest_neighbour(cube, [('longitude', lon),
                                               ('latitude', lat)])
              for cube in cubes]
-
+    cubes = iris.cube.CubeList(cubes)
     if full:
         return cubes
     else:

oceans/sw_extras/sw_extras.py

@@ -620,14 +620,6 @@ def psu2ppt(psu):
             psu ** 2 + a[6] * psu ** 2.5)
 
 
-def swstate():
-    pass
-
-
-def adiabattempgrad():
-    pass
-
-
 def soundspeed(S, T, D, equation='mackenzie'):
     """Various sound-speed equations.
     1)  soundspeed(s, t, d) returns the sound speed (m/sec) given vectors
@@ -721,20 +713,6 @@ def soundspeed(S, T, D, equation='mackenzie'):
         C = ((C3 * P + C2) * P + C1) * P + C0
         # SOUND SPEED RETURN.
         ssp = C + (A + B * SR + D * S) * S
-    elif equation == 'state':
-        raise TypeError("Not implemented!")
-        P = D
-        # Copied somewhat from program EOSSPEED.F
-        svan, sigma = swstate(S, T, P)
-        VOL = (1.) / (1000. + sigma)
-        # DV/DP|ADIA = (DV/DP) AT CONSTANT T + ADIA.LAPSE RATE *
-        # (DV/DT) AT CONSTANT P
-        # Note: factor of 10 is convert pressure from dB to Bars.
-        dVdP = swstate(S, T, P, 'dP')
-        dVdT = swstate(S, T, P, 'dT')
-        dVdPad = (dVdP + adiabattempgrad(S, T, P) * dVdT) * 10
-        # C = V * SQRT ( 1/DV/DP| ADIA)
-        ssp = VOL * np.sqrt(np.abs((1.e5) / dVdPad))
     else:
         raise TypeError('Unrecognizable equation specified: %s' % equation)
     return ssp