[ncl-talk] convert hdf to nc using ncl_convert2nc gives error

[Dennis Shea]

I have run this on a MAC (yosemite) with 6.2.0 and one of our linux servers
with 6.3.0. It works fine on those systems.

I think a core NCL developer will have to look. I will open a JIRA ticket

I have placed a gzip'd version of the converted file at:

ftp ftp.cgd.ucar.edu
anonymous
email
cd pub/shea
binary
ls
get MERRA200.prod.assim.tavg1_2d_slv_Nx.20000101.hdf.nc.gz
quit



On Thu, Aug 27, 2015 at 9:22 AM, Marit Marsh Stromberg <
mmarsh04 at mail.bbk.ac.uk> wrote:

> Many thanks for your help. I have now tried to add .hdfeos and .he2 but
> unfortunately the error message remains...
>
> $ ncl_convert2nc MERRA200.prod.assim.tavg1_2d_slv_Nx.20000101.hdf.hdfeos
> if: Expression Syntax.
>
> $ ncl_convert2nc MERRA200.prod.assim.tavg1_2d_slv_Nx.20000101.hdf.he2
> if: Expression Syntax.
>
>
> On 27 August 2015 at 15:51, Dennis Shea <shea at ucar.edu> wrote:
>
>> If you examine the file via:
>>
>> %> ncl_filedump MERRA200.prod.assim.tavg1_2d_slv_Nx.20000101.hdf | less
>>
>> You will see that it is a HDF-EOS2 file.
>>
>> I
>>
>> Variable: f
>>
>> Type: file
>>
>> filename:       MERRA200.prod.assim.tavg1_2d_slv_Nx.20000101
>>
>> path:   MERRA200.prod.assim.tavg1_2d_slv_Nx.20000101.hdf
>>
>>    file global attributes:
>>
>>       HDFEOSVersion : HDFEOS_V2.14
>>
>>       StructMetadata_0 : GROUP=SwathStructure
>>
>> END_GROUP=SwathStructure
>>
>> GROUP=GridStructure
>>
>>         GROUP=GRID_1
>>
>>                GridName="EOSGRID"
>>
>>                 XDim=540
>>
>>                 YDim=361
>>
>> [SNIP]
>>
>>
>> ====================
>> It is best to attach a .he2 (or .hdfeos) to the file in the command line.
>> You need *not* rename the file.
>>
>> %> ncl_filedump MERRA200.prod.assim.tavg1_2d_slv_Nx.20000101.hdf.he2 |
>> less
>>
>>
>> ===================
>>
>> To make a netCDF, use the .he2 extension to the file name in the command
>> line.
>>
>>
>> %> ncl_convert2nc MERRA200.prod.assim.tavg1_2d_slv_Nx.20000101.hdf.he2
>>
>>
>> Good Luck
>>
>> On Thu, Aug 27, 2015 at 3:33 AM, Marit Marsh Stromberg <
>> mmarsh04 at mail.bbk.ac.uk> wrote:
>>
>>> Hi,
>>> I am trying to convert a hdf file to netcdf format via ncl_convert2nc
>>> but get an error message "if:Expression Syntax" (see below for input and
>>> output message). This seem to have been a problem raised on this email list
>>> before (e.g.
>>> http://www.ncl.ucar.edu/Support/talk_archives/2013/3087.html) but
>>> following the email thread - and going through the proposed ways of solving
>>> the issue - the issue do not appear to have been solved (at least not
>>> posted on the mailing list). Does anybody have an idea on what the issue
>>> might be?
>>> I have attached a link so that the file I want to convert can be
>>> downloaded.
>>>
>>> Kind regards,
>>> Marit Marsh Stromberg
>>>
>>> The code I am running and the error message I get:
>>> $ ncl_convert2nc MERRA200.prod.assim.tavg1_2d_slv_Nx.20000101.hdf
>>> if: Expression Syntax.
>>>
>>> My computer and ncl version info:
>>> $ ncl -V
>>> 6.3.0
>>> The NCL binary I downloaded was
>>> ncl_​ncarg-​6.​3.​0.​MacOS_​10.​8_​64bit_​nodap_​gcc471.​tar.​gz
>>> <https://www.earthsystemgrid.org/download/fileDownload.htm?logicalFileId=81feecd3-cd9b-11e4-bb80-00c0f03d5b7c>
>>>
>>> $ uname -a
>>> Darwin DM-MacBook-Pro.local 12.5.0 Darwin Kernel Version 12.5.0: Sun Sep
>>> 29 13:33:47 PDT 2013; root:xnu-2050.48.12~1/RELEASE_X86_64 x86_64
>>>
>>> Mac OS X Version 10.8.5
>>>
>>> What I have tried so far, as suggested in reply on this email list
>>> before:
>>> * to add .he5 as file ending (as suggested in
>>> http://www.ncl.ucar.edu/Support/talk_archives/2013/3093.html):
>>> $ ncl_convert2nc MERRA200.prod.assim.tavg1_2d_slv_Nx.20000101.hdf.he5
>>> if: Expression Syntax.
>>>
>>> * To do a file dump (ncl_filedump) - which I am able to do. (as
>>> suggested in
>>> http://www.ncl.ucar.edu/Support/talk_archives/2013/3167.html)
>>>
>>> * Running the command prefixed by 'csh -xv' (as suggested in
>>> http://www.ncl.ucar.edu/Support/talk_archives/2013/3208.html)
>>> This gives:
>>> $ csh -xv ncl_convert2nc MERRA200.prod.assim.tavg1_2d_slv_Nx.20000101.hdf
>>> ncl_convert2nc: No such file or directory.
>>> However, running
>>> $ which ncl_convert2nc
>>> /usr/local/ncl-6.3.0/bin/ncl_convert2nc
>>> shows it should be there.
>>> ​
>>>  MERRA200.prod.assim.tavg1_2d_slv_Nx.20000101.hdf
>>> <https://drive.google.com/a/mail.bbk.ac.uk/file/d/0B5nVy-cTj_CkUzQ3SUxoMi1IN0E/view?usp=drive_web>
>>> ​
>>>
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>>>
>>
>
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