Hi all,
We're trying to use the netCDF4 python lib to access data on an what I
thikn is a HYRAX server. It can create the Dataset object seemingly fine,
and creates a variabel object fine -- but then gives me:
RuntimeError: NetCDF: file not found
when I try to extract some data from the variable.
Noett hat this seems to work fien with PyDAP -- so maybe that means that
it's a netcdf lib problem, rather than a HYRAX problem.
But I have no idea how to debug this
I'm using a pretty recent version of the netcdf lib:
In [8]: netCDF4.getlibversion()
Out[8]: u'4.4.1 of Aug 10 2016 18:32:53 $'
though the failure is the same with older versions as well. (and both on
Windows and OS-X so far...)
I've enclosed a small python script that demonstrates the problem -- the
problem url is in the script.
Thanks for any hints!
-CHB
--
Christopher Barker, Ph.D.
Oceanographer
Emergency Response Division
NOAA/NOS/OR&R (206) 526-6959 voice
7600 Sand Point Way NE (206) 526-6329 fax
Seattle, WA 98115 (206) 526-6317 main reception
Chris.Barker@xxxxxxxx
# Example of failed requet from a HYRAX server
from netCDF4 import Dataset
nc =
Dataset('http://ingria.coas.oregonstate.edu:80/opendap/aggregation/ocean_time_aggregation.ncml')
print("Dataset loaded OK")
u = nc.variables['u']
print("Successfully Extracted a varaible object:")
print(u)
u_shape = u.shape # this works ok
print("The variable object is seemingly valid:")
print("the shape is %s" % (u_shape,))
print("but I can't extract the actual data")
u_data = u[0, 0, 0:10, 0:10:] # this does not work--"RuntimeError: NetCDF:
file not found"
