如何获得特定维度的netCDF变量列表？

Question

{ 
dimensions: 
    grp = 50 ; 
    time = UNLIMITED ; // (0 currently) 
    depth = 3 ; 
    scalar = 1 ; 
    spectral_bands = 2 ; 
    x1AndTime = 13041 ; 
    x2AndTime = 13041 ; 
    midTotoAndTime = 13041 ; 
variables: 
    double time(time) ; 
    double a1(time, hru) ; 
    double a2(time, hru) ; 
    double a3(x1AndTime, hru) ; 
    double a4(x2AndTime, hru) ; 
    double a5(hru) ; 

公开赛在R

out <- ncdf4::nc_open('test.nc')

的netCDF文件获取所有的变量

ncvars <- names(out[['var']])

这给我的所有变量在netCDF文件列表。

我怎样才能得到它们的尺寸time和hru，例如变量列表？

拟输出：

列表与a1, a2

Answer 1

注意：这是蟒，不属于R但是示出的逻辑。

import netCDF4 

out = netCDF4.Dataset("test.nc") 
# list of vars w dimenions 'time' and 'hru' 
wanted_vars = [] 

# loop thru all the variables 
for v in out.variables: 
    # this is the name of the variable. 
    print v 
    # variable.dimensions is a tuple of the dimension names for the variable 
    # In R you might need just ('time', 'hru') 
    if out.variables[v].dimensions == (u'time', u'hru'): 
    wanted_vars.append(v) 

print wanted_vars