Re: New version of PyNGL and PyNIO available

All:

I think that would be of great interest to the Python community - not
that I dont ever want the pyNGL - but it would broaden the appeal!

thanks for all your hard work!

L

p.s. - hello Jeff!

On Aug 19, 2008, at 11:05 AM, David Brown wrote:

> Jeff,
> You are right about that. We have been discussing the best way to
> 'disentangle' the
> NIO library. With luck we can do it for the release version 1.3.0.
> -dave
>
> On Aug 19, 2008, at 9:49 AM, Jeff Whitaker wrote:
>
>> Mary Haley wrote:
>>>
>>>
>>> On Mon, 18 Aug 2008, Jeff Whitaker wrote:
>>>
>>>> Mary Haley wrote:
>>>>>
>>>>> We are please to announce a new release of PyNIO and PyNGL,
>>>>> which are
>>>>> now being released as separate packages, and are available as open
>>>>> source.
>>>>>
>>>>> The new version of both packages is 1.3.0b1, and they have the
>>>>> following new major features:
>>>>>
>>>>> - Support for masked arrays added
>>>>>
>>>>> PyNIO will now return a numpy masked array if a missing value is
>>>>> detected on the NetCDF, HDF, or GRIB file. The PyNGL
>>>>> visualization
>>>>> routines were also updated to recognize masked arrays. You no
>>>>> longer need to set the *MissingValue* resources if you have a
>>>>> masked array that contains a valid missing value.
>>>>>
>>>>> - Extended subscripting added to PyNIO
>>>>>
>>>>> PyNIO now supports an extended form of subscripting to specify
>>>>> subsets using a description string that can reference associated
>>>>> coordinate variables if they exist in the file. Dimensions can
>>>>> be
>>>>> transposed by varying the order of the coordinate axes in the
>>>>> subset specification. Time dimension subsets may be specified
>>>>> using
>>>>> ISO-8061-conforming date/time strings if the time dimension
>>>>> has a
>>>>> CF-conforming 'units' attribute.
>>>>>
>>>>> - New analysis functions in PyNGL:
>>>>>
>>>>> o Ngl.betainc - Evaluates the incomplete beta function.
>>>>> o Ngl.chiinv - Evaluates the inverse chi-squared distribution
>>>>> function.
>>>>> o Ngl.linmsg - Linearly interpolates to fill in missing values.
>>>>> o Ngl.regline - Calculates the linear regression coefficient
>>>>> between two series.
>>>>>
>>>>> - New visualization routines in PyNGL:
>>>>>
>>>>> o Ngl.streamline_scalar_map - routine for generating
>>>>> streamlines
>>>>> colored by scalar fields over a map.
>>>>> o Ngl.wmstnm - draws station model data.
>>>>>
>>>>> For a full list and description of what's new, see:
>>>>>
>>>>> http://www.pyngl.ucar.edu/whatsnew.shtml
>>>>>
>>>>> We are releasing this as a beta version so we can get some user
>>>>> testing of the new features, especially recognition of masked
>>>>> arrays
>>>>> and the extended subscripting capability in PyNIO.
>>>>>
>>>>> Please report to pyngl-talk or Dave or I if you run into
>>>>> problems, and
>>>>> we'll try to make sure it gets into the official 1.3.0 release.
>>>>>
>>>>> Note: building PyNGL and/or PyNIO from source code is not a
>>>>> trivial
>>>>> task. We have tried to document this as best as we could, but we
>>>>> would also appreciate your feedback in this area. We have
>>>>> provided
>>>>> some prebuilt binaries. Send email to me if you run into any
>>>>> installation problems.
>>>>>
>>>>> Cheers,
>>>>>
>>>>> --Mary
>>>>
>>>> Mary: Thanks for releasing the source! I've just tried to build
>>>> NIO on my mac, and almost succeeded. I don't have HDFEOS, so I
>>>> set HAS_HDFEOS to 0. setup.py does
>>>>
>>>> gcc -bundle -undefined dynamic_lookup -L/sw/lib -I/sw/include
>>>> build/temp.macosx-10.5-ppc-2.5/niomodule.o -L/sw/lib -L/Users/
>>>> jwhitaker/lib -lnio -lmfhdf -ldf -ljpeg -lpng -lz -lnetcdf -
>>>> lhdf5_hl -lhdf5 -lsz -lgrib2c -ljasper -lpng -o ./nio.so
>>>>
>>>> but importing nio gives
>>>>
>>>> ImportError: dlopen(./nio.so, 2): Symbol not found: _GDattach
>>>> Referenced from: /Volumes/User/jwhitaker/python/PyNIO-1.3.0b1/
>>>> nio.so
>>>> Expected in: dynamic lookup
>>>
>>> Jeff,
>>>
>>> Are you linking against a libnio.a that we built? If so, it may have
>>> been built with HDFEOS included, and hence you will need the HDFEOS
>>> library to resolve these symbols. I realize this is a pain. I
>>> should
>>> update the documentation to reflect this. This is true for NetCDF4
>>> and GRIB2 as well, unfortunately.
>>>
>>> The one option is to build NCL from source and answer "no" to the
>>> HDFEOS support question.
>>>
>>> It looks like you are building on a Mac PPC running 10.5? I've
>>> attached the HDF-EOS software for 10.4 (I don't have the PPC/10.5
>>> combo). It's attached to this message.
>>>
>>> --Mary
>>
>> Mary: Oops, I missed that I have to build NCL first before PyNIO.
>> Is libnio too entangled with the rest of NCL to split it out and
>> ship it with PyNIO? It would be really nice to be able to just get
>> the I/O capabilities of PyNIO without having to build all the ncar
>> graphics stuff.
>>
>> -Jeff
>>>
>>>> I think that symbol is from hdfeos - so it would appear that it's
>>>> not really optional. Funny thing is, I grepped the PyNIO source
>>>> and I don't see that symbol referenced anywhere. -Jeff
>>>>
>>>>
>>>>
>>>> --
>>>> Jeffrey S. Whitaker Phone : (303)497-6313
>>>> Meteorologist FAX : (303)497-6449
>>>> NOAA/OAR/PSD R/PSD1 Email : Jeffrey.S.Whitaker_at_noaa.gov
>>>> 325 Broadway Office : Skaggs Research Cntr 1D-113
>>>> Boulder, CO, USA 80303-3328 Web : http://tinyurl.com/5telg
>>>>
>>>>
>>
>>
>> --
>> Jeffrey S. Whitaker Phone : (303)497-6313
>> Meteorologist FAX : (303)497-6449
>> NOAA/OAR/PSD R/PSD1 Email : Jeffrey.S.Whitaker_at_noaa.gov
>> 325 Broadway Office : Skaggs Research Cntr 1D-113
>> Boulder, CO, USA 80303-3328 Web : http://tinyurl.com/5telg
>>
>
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Received on Tue Aug 19 2008 - 10:22:01 MDT