Todd,
I've seen this problem too. However, the solution is not always the
same. One time I was mixing 2-D and 3-D fields (try slicing the data at
a level or the make 2-D method); some times the units were a problem (
try the makeNewUnit method); and other times there were other problems.
In summary I would say that using NetCDF data other than model data from
motherlode is not as easy as I would like.
Bill
Todd Ellis wrote:
To the list:
I have a student who is attempting to use IDV to calculate and display
Q-vectors using reanalysis data. In using some of the built in
formulas in the IDV, however, the IDV seems to gag on doing partial
derivatives of the NetCDF Reanalysis data, even though it works fine
with model data from the UCAR motherlode.
I'm attaching the error message below, and by my examination, it
appears that it might have to do with the way the coordinate system in
the NetCDF data is applied. Are there any users who have experience
with this matter that may be able to offer advice on an approach to
solving this issue?
I am also starting a support ticket, but thought that, since time is
an issue, I would try the collective expertise of the community as well.
Thanks for your time
Todd
Pasted error message:
Traceback (innermost last):
File "<string>", line 1, in ?
File "<string>", line 289, in dvdx
File "<string>", line 105, in ddx
at visad.FunctionType.binary(FunctionType.java:283)
at visad.DataImpl.binary(DataImpl.java:138)
at visad.DataImpl.divide(DataImpl.java:218)
at
ucar.unidata.data.grid.DerivedGridFactory.partial(DerivedGridFactory.java:2237)
at
ucar.unidata.data.grid.DerivedGridFactory.partial(DerivedGridFactory.java:2186)
at
ucar.unidata.data.grid.DerivedGridFactory.partial(DerivedGridFactory.java:2165)
at
ucar.unidata.data.grid.DerivedGridFactory.ddx(DerivedGridFactory.java:2134)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:585)
visad.TypeException: visad.TypeException: FunctionType.binary: types
don't match
_________________________________________
Dr. Todd D. Ellis
Assistant Professor of Meteorology
Department of Earth Sciences
108 Ravine Parkway
SUNY College at Oneonta
Oneonta, NY 13820
ellistd@xxxxxxxxxxx
(607) 436-2309
"I don't believe in Quantum Physics when it comes to
matters of the heart"
-- Crash Davis, Bull Durham
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