if I use gdalinfo to check the file:
chaoyue@chaoyue-Aspire-4750:~/Downloads/LISOTD$ gdalinfo
LISOTD_HRMC_V2.3.2011.hdf
Driver: HDF4/Hierarchical Data Format Release 4
Files: LISOTD_HRMC_V2.3.2011.hdf
Size is 512, 512
Coordinate System is `'
Subdatasets:
SUBDATASET_1_NAME=HDF4_SDS:UNKNOWN:"LISOTD_HRMC_V2.3.2011.hdf":0
SUBDATASET_1_DESC=[360x720x12] HRMC_COM_FR (32-bit floating-point)
SUBDATASET_2_NAME=HDF4_SDS:UNKNOWN:"LISOTD_HRMC_V2.3.2011.hdf":4
SUBDATASET_2_DESC=[360x720x12] HRSC_COM_FR (32-bit floating-point)
Corner Coordinates:
Upper Left ( 0.0, 0.0)
Lower Left ( 0.0, 512.0)
Upper Right ( 512.0, 0.0)
Lower Right ( 512.0, 512.0)
Center ( 256.0, 256.0)
Chao
2012/6/2 Chao YUE <chaoyue...@gmail.com>
> Dear all,
>
> I tried to use pytalbes to read a hdf file, but I got error:
> I searched a little bit online, there might be cases you have more than 2
> file handlers for the same file and they are opened for both read and
> write, you'll probably have this error.
> But it's not my case that I open it only for the first time. From the
> error message, it seems that there is no root group.
>
> In [1]: h5file=tables.openFile('LISOTD_HRMC_V2.3.2011.hdf','r')
> ---------------------------------------------------------------------------
> HDF5ExtError Traceback (most recent call last)
> /home/chaoyue/Downloads/LISOTD/<ipython-input-1-b53d861308cf> in <module>()
> ----> 1 h5file=tables.openFile('LISOTD_HRMC_V2.3.2011.hdf','r')
>
> /usr/local/lib/python2.7/dist-packages/tables/file.pyc in
> openFile(filename, mode, title, rootUEP, filters, **kwargs)
> 256 return filehandle
> 257 # Finally, create the File instance, and return it
>
> --> 258 return File(filename, mode, title, rootUEP, filters, **kwargs)
> 259
> 260
>
> /usr/local/lib/python2.7/dist-packages/tables/file.pyc in __init__(self,
> filename, mode, title, rootUEP, filters, **kwargs)
> 565
> 566 # Get the root group from this file
>
> --> 567 self.root = root = self.__getRootGroup(rootUEP, title,
> filters)
> 568 # Complete the creation of the root node
>
> 569 # (see the explanation in ``RootGroup.__init__()``.
>
>
> /usr/local/lib/python2.7/dist-packages/tables/file.pyc in
> __getRootGroup(self, rootUEP, title, filters)
> 614 # Create new attributes for the root Group instance and
>
> 615 # create the object tree
>
> --> 616 return RootGroup(self, rootUEP, title=title, new=new,
> filters=filters)
> 617
> 618
>
> /usr/local/lib/python2.7/dist-packages/tables/group.pyc in __init__(self,
> ptFile, name, title, new, filters)
> 1155 self._g_new(ptFile, name, init=True)
> 1156 # Open the node and get its object ID.
>
> -> 1157 self._v_objectID = self._g_open()
> 1158
> 1159 # Set disk attributes and read children names.
>
>
> /usr/local/lib/python2.7/dist-packages/tables/hdf5Extension.so in
> tables.hdf5Extension.Group._g_open (tables/hdf5Extension.c:5521)()
>
> HDF5ExtError: Can't open the group: '/'.
>
> If I open the file with this command, it gave no error:
>
> In [2]: h5file=tables.openFile('LISOTD_HRMC_V2.3.2011.hdf',mode='r')
>
> But when I try to print the file information, I get:
>
> In [3]: print h5file
> Exception tables.exceptions.HDF5ExtError: HDF5ExtError('Problems closing
> the Group /',) in ignored
> ---------------------------------------------------------------------------
> AttributeError Traceback (most recent call last)
> /home/chaoyue/Downloads/LISOTD/<ipython-input-3-64c76de88957> in <module>()
> ----> 1 print h5file
>
> /usr/local/lib/python2.7/dist-packages/tables/file.pyc in __str__(self)
> 2197 # Print all the nodes (Group and Leaf objects) on object
> tree
>
> 2198 date =
> time.asctime(time.localtime(os.stat(self.filename)[8]))
> -> 2199 astring = self.filename + ' (File) ' + repr(self.title) +
> '\n'
> 2200 # astring += 'rootUEP :=' + repr(self.rootUEP) + '; '
>
> 2201 # astring += 'format_version := ' + self.format_version +
> '\n'
>
>
> /usr/local/lib/python2.7/dist-packages/tables/file.pyc in _gettitle(self)
> 474
> 475 def _gettitle(self):
> --> 476 return self.root._v_title
> 477 def _settitle(self, title):
> 478 self.root._v_title = title
>
> AttributeError: 'File' object has no attribute 'root'
>
> I have not too much experience handling HDF data but it's the second time
> I have this problem.
> In both cases the data are downloaded from official release of research
> data so I think it's unlikely that the data itself are badly produced.
> But if anyone has any interest trying to have a look of the issue, the
> data is at:
> ftp://ghrc.nsstc.nasa.gov/pub/lis/climatology/HRMC/data/
>
> The ftp is anonymous and the data released by NASA.
>
> thanks for any help in advance,
>
> best regards,
>
> Chao
>
> --
>
> ***********************************************************************************
> Chao YUE
> Laboratoire des Sciences du Climat et de l'Environnement (LSCE-IPSL)
> UMR 1572 CEA-CNRS-UVSQ
> Batiment 712 - Pe 119
> 91191 GIF Sur YVETTE Cedex
> Tel: (33) 01 69 08 29 02; Fax:01.69.08.77.16
>
> ************************************************************************************
>
>
--
***********************************************************************************
Chao YUE
Laboratoire des Sciences du Climat et de l'Environnement (LSCE-IPSL)
UMR 1572 CEA-CNRS-UVSQ
Batiment 712 - Pe 119
91191 GIF Sur YVETTE Cedex
Tel: (33) 01 69 08 29 02; Fax:01.69.08.77.16
************************************************************************************
------------------------------------------------------------------------------
Live Security Virtual Conference
Exclusive live event will cover all the ways today's security and
threat landscape has changed and how IT managers can respond. Discussions
will include endpoint security, mobile security and the latest in malware
threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/
_______________________________________________
Pytables-users mailing list
Pytables-users@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/pytables-users
