Changes between Version 22 and Version 23 of CdatLite


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Timestamp:
23/09/09 15:10:17 (10 years ago)
Author:
spascoe
Comment:

--

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  • CdatLite

    v22 v23  
    22 
    33 '''2009-09-15''':: 
    4   cdat-lite-5.2rc1 is out and [http://pypi.python.org/pypi/cdat-lite available on pypi].  Presently the tarball '''not''' on the NDG egg repository.  Download from pypi if you don't want to use easy_install.  
     4  cdat-lite-5.2rc1 is out and [http://pypi.python.org/pypi/cdat-lite available on pypi] or the [http://ndg.nerc.ac.uk/dist NDG Egg repository] 
    55 
    66{{{ 
     
    2727.. _PCMDI: http://www2-pcmdi.llnl.gov/ 
    2828 
    29 FAQ 
    30 === 
    31  
    32 What is CDAT? 
    33 ------------- 
    34  
    35 CDAT_ is a large suite of open source tools distributed by PCMDI_ for 
    36 the management and analysis of climate data.  It includes several 
    37 visualisation components and the graphical user interface VCDAT. 
    38  
    39 What is the difference between CDAT and cdat-lite? 
    40 -------------------------------------------------- 
    41  
    42 Differences between CDAT and CDAT-lite can be classified as 
    43 differences in scope, i.e. which packages are included, and installation system. 
    44  
    45 cdat-lite contains the 'cdms2' package and a few related 
    46 packages.  It does not include the 'vcs' visualisation package or the 
    47 VCDAT graphical user interface.  As of v5.1.1-0.3pre3 the included 
    48 packages are: 
    49  
    50  * cdms2 
    51  
    52  * cdtime 
    53  
    54  * cdutil 
    55  
    56  * genutil 
    57  
    58  * ncml 
    59  
    60  * Properties 
    61  
    62  * regrid2 
    63  
    64  * unidataa 
    65  
    66  * xmgrace 
    67  
    68 CDAT bundles virtually all dependencies together in it's source 
    69 distribution -- even Python itself.  This has it's advantages as it 
    70 simplifies satisfying dependencies and avoids version conflicts 
    71 between dependencies.  However, if you want to integrate CDAT's data 
    72 management components into your existing Python architecture CDAT can 
    73 be overkill. 
    74  
    75  
    76 What has changed between cdat-lite-4.x and cdat-lite-5.x? 
    77 --------------------------------------------------------- 
    78  
    79 If you are a cdat-lite-4 user (or a CDAT 4 user) you have a big 
    80 migration job on your hands.  CDAT-4 uses the ``Numeric`` package for 
    81 arrays which has been out of date and unmaintained for a long time 
    82 now.  It is known to have problems on 64bit architectures. 
    83  
    84 How does cdat-lite track changes to CDAT? 
    85 ----------------------------------------- 
    86  
    87 cdat-lite tries to release major new versions shortly after new 
    88 versions of CDAT.  Sometimes CDAT-trunk contains important fixes that 
    89 should be applied so that the latest cdat_lite can run ahead of 
    90 official CDAT releases (although sometimes CDAT recommends you build 
    91 from trunk anyway). 
    92  
    93 The one exception is the UK Met. Office PP file support which is 
    94 usually updated in cdat_lite before CDAT.  In all cases the exact 
    95 build versions of CDAT and cdunifpp will be stated in the 
    96 distribution's ``setup.py`` file. 
    97  
    98 How can I use CMOR2 with cdat-lite? 
    99 ----------------------------------- 
    100  
    101 We are interested to hear any with experience of using CMOR2 with 
    102 cdat-lite but it should be as simple as downloading the distribution 
    103 and installing it in parallel with:: 
    104  
    105   # From the CMOR install directory 
    106   $ python setup.py install 
    107  
    108 How can I use OPeNDAP with cdat-lite? 
    109 ------------------------------------- 
    110  
    111 OPeNDAP support is an experimental feature of cdat-lite at the moment. 
    112 Unlike CDAT you don't select OPeNDAP explicitly during installation 
    113 but cdat-lite will inherit any OPeNDAP support embedded into the 
    114 NetCDF4 library.  Recent beta releases of NetCDF4 provides a switch to 
    115 transparently use OPeNDAP. 
    116  
    117 How do I install cdat-lite as an unprivileged user? 
    118 --------------------------------------------------- 
    119  
    120 See `installing locally`_ 
    121  
    122 Which versions of NetCDF does cdat-lite support? 
    123 ------------------------------------------------ 
    124  
    125 TODO 
    126  
    12729Installing cdat-lite 
    12830==================== 
     
    13638  # Required if using a NetCDF4 compiled with HDF5 
    13739  $ export HDF5_HOME=/usr/local/hdf5 
    138   $ easy_install cdat_lite 
     40  $ easy_install cdat_lite  
    13941 
    14042 
     
    256158.. _`cdat-lite homepage`: http://proj.badc.rl.ac.uk/ndg/wiki/CdatLite 
    257159.. _`NERC Data Grid wiki`: http://proj.badc.rl.ac.uk/ndg/wiki 
     160 
     161 
     162 
     163 
     164FAQ 
     165=== 
     166 
     167What is CDAT? 
     168------------- 
     169 
     170CDAT_ is a large suite of open source tools distributed by PCMDI_ for 
     171the management and analysis of climate data.  It includes several 
     172visualisation components and the graphical user interface VCDAT. 
     173 
     174What is the difference between CDAT and cdat-lite? 
     175-------------------------------------------------- 
     176 
     177Differences between CDAT and CDAT-lite can be classified as 
     178differences in scope, i.e. which packages are included, and installation system. 
     179 
     180cdat-lite contains the 'cdms2' package and a few related 
     181packages.  It does not include the 'vcs' visualisation package or the 
     182VCDAT graphical user interface.  As of v5.1.1-0.3pre3 the included 
     183packages are: 
     184 
     185 * cdms2 
     186 
     187 * cdtime 
     188 
     189 * cdutil 
     190 
     191 * genutil 
     192 
     193 * ncml 
     194 
     195 * Properties 
     196 
     197 * regrid2 
     198 
     199 * unidataa 
     200 
     201 * xmgrace 
     202 
     203CDAT bundles virtually all dependencies together in it's source 
     204distribution -- even Python itself.  This has it's advantages as it 
     205simplifies satisfying dependencies and avoids version conflicts 
     206between dependencies.  However, if you want to integrate CDAT's data 
     207management components into your existing Python architecture CDAT can 
     208be overkill. 
     209 
     210 
     211What has changed between cdat-lite-4.x and cdat-lite-5.x? 
     212--------------------------------------------------------- 
     213 
     214If you are a cdat-lite-4 user (or a CDAT 4 user) you have a big 
     215migration job on your hands.  CDAT-4 uses the ``Numeric`` package for 
     216arrays which has been out of date and unmaintained for a long time 
     217now.  It is known to have problems on 64bit architectures. 
     218 
     219How does cdat-lite track changes to CDAT? 
     220----------------------------------------- 
     221 
     222cdat-lite tries to release major new versions shortly after new 
     223versions of CDAT.  Sometimes CDAT-trunk contains important fixes that 
     224should be applied so that the latest cdat_lite can run ahead of 
     225official CDAT releases (although sometimes CDAT recommends you build 
     226from trunk anyway). 
     227 
     228The one exception is the UK Met. Office PP file support which is 
     229usually updated in cdat_lite before CDAT.  In all cases the exact 
     230build versions of CDAT and cdunifpp will be stated in the 
     231distribution's ``setup.py`` file. 
     232 
     233How can I use CMOR2 with cdat-lite? 
     234----------------------------------- 
     235 
     236We are interested to hear any with experience of using CMOR2 with 
     237cdat-lite but it should be as simple as downloading the distribution 
     238and installing it in parallel with:: 
     239 
     240  # From the CMOR install directory 
     241  $ python setup.py install 
     242 
     243How can I use OPeNDAP with cdat-lite? 
     244------------------------------------- 
     245 
     246OPeNDAP support is an experimental feature of cdat-lite at the moment. 
     247Unlike CDAT you don't select OPeNDAP explicitly during installation 
     248but cdat-lite will inherit any OPeNDAP support embedded into the 
     249NetCDF4 library.  Recent beta releases of NetCDF4 provides a switch to 
     250transparently use OPeNDAP. 
     251 
     252How do I install cdat-lite as an unprivileged user? 
     253--------------------------------------------------- 
     254 
     255See `installing locally`_ 
     256 
     257Which versions of NetCDF does cdat-lite support? 
     258------------------------------------------------ 
     259 
     260TODO 
     261 
    258262}}}