Patrick BROCKMANN - LSCE (Climate and Environment Sciences Laboratory)
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Updated: 2018/12/10

Load the ferret extension



In [1]:

    
%load_ext ferretmagic

Get data from ferret and put data from python



In [2]:

    
%%ferret
set text/font=hershey
use coads_climatology
shade sst[l=10] ; go land









    




! Enter_GO land
! Exit_GO



In [3]:

    
%ferret_getdata sstdict = sst









    




Message: sstdict is now available in python as a dictionary containing the variable's metadata and data array.



In [4]:

    
sstdict.keys()









    Out[4]:





['axis_coords',
 'axis_types',
 'data_unit',
 'axis_units',
 'title',
 'axis_names',
 'missing_value',
 'data']



In [5]:

    
sstdata = sstdict['data']
type(sstdata)









    Out[5]:





numpy.ndarray



In [6]:

    
import numpy
mask = numpy.abs(sstdata - sstdict['missing_value']) < 1.0E-5
sstdata[mask] = -10.0
sstdict['name'] = 'SSTCopy'
sstdict['title'] = 'SST with miss vals set to -10'
sstdict.keys()









    Out[6]:





['axis_coords',
 'axis_types',
 'data_unit',
 'axis_units',
 'title',
 'axis_names',
 'missing_value',
 'data',
 'name']



In [7]:

    
%ferret_putdata sstdict









    




Message: sstdict is now available in ferret as SSTCopy



In [8]:

    
%%ferret
show data
shade sstcopy[l=1]









    




     currently SET data sets:
    1> /opt/ferret_dsets/data/coads_climatology.cdf  (default)
 name     title                             I         J         K         L
 SST      SEA SURFACE TEMPERATURE          1:180     1:90      ...       1:12
 AIRT     AIR TEMPERATURE                  1:180     1:90      ...       1:12
 SPEH     SPECIFIC HUMIDITY                1:180     1:90      ...       1:12
 WSPD     WIND SPEED                       1:180     1:90      ...       1:12
 UWND     ZONAL WIND                       1:180     1:90      ...       1:12
 VWND     MERIDIONAL WIND                  1:180     1:90      ...       1:12
 SLP      SEA LEVEL PRESSURE               1:180     1:90      ...       1:12
 ------ Python Variables ------
 SSTCOPY  SST with miss vals set to -10    1:180     1:90      ...       1:12      ...       ...



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