> I'm working with pyhdf to open TRMM Rainfall HDF files.  My final
> pourpose is converting them to a numpy array.

> Once I downloaded them fromftp://disc2.nascom.nasa.gov/ftp/data/s4pa//TRMM_L3/TRMM_3B42
> using an automated script. I've to manually decompress the donwloaded
> files using WinRAR. Then, processing de inflated files to get the
> numpy array. So I wonder how can I automate the whole process....

> The downloaded HDF files ar Z compressed, I've been trying to inflate
> them using zlib, but it seems that python zlib implemementation can't
> detect header information.

> Here are the questions:
> a- Have you faced the same problem?
> a- Somebody knows a better way to do it? (getting numpy arrays from
> the HDF.Z files)
> b- If I were in a unix machine, I'll call decompress using a system
> call, but I'm in a Windows machine. If you know a compress
> implementation on windows, it also will help a lot.

> Environment:
> Python 2.5
> Windows 7 x64
> pyhdf (SD)
> numpy

> Thanks in advance.

> You could try an os.system call to the 7-Zip executable on Windows.
> According to the website (http://www.7-zip.org/), it can decompress .Z
> files.

> Hanlie

> On Aug 1, 3:17 pm, jpaulini <jpaul...@gmail.com> wrote:
> > Hi all,

> > I'm working with pyhdf to open TRMM Rainfall HDF files.  My final
> > pourpose is converting them to a numpy array.

> > Once I downloaded them fromftp://
> disc2.nascom.nasa.gov/ftp/data/s4pa//TRMM_L3/TRMM_3B42
> > using an automated script. I've to manually decompress the donwloaded
> > files using WinRAR. Then, processing de inflated files to get the
> > numpy array. So I wonder how can I automate the whole process....

> > The downloaded HDF files ar Z compressed, I've been trying to inflate
> > them using zlib, but it seems that python zlib implemementation can't
> > detect header information.

> > Here are the questions:
> > a- Have you faced the same problem?
> > a- Somebody knows a better way to do it? (getting numpy arrays from
> > the HDF.Z files)
> > b- If I were in a unix machine, I'll call decompress using a system
> > call, but I'm in a Windows machine. If you know a compress
> > implementation on windows, it also will help a lot.

> > Environment:
> > Python 2.5
> > Windows 7 x64
> > pyhdf (SD)
> > numpy

> > Thanks in advance.

> I had WinRAR, but I couldn't command line a .Z file decompression..

> It's not an elegant solution, but it worked fine. I had very frustrating moments trying to inflate the HDF.Z files using python zlib library…

> On 02.08.2011, at 14:06, Juan F Paulini wrote:

> > Thank you, ping. That was all I needed (my next move should be migrating
> my os to linux...)

> > I had WinRAR, but I couldn't command line a .Z file decompression..

> > It's not an elegant solution, but it worked fine. I had very frustrating
> moments trying to inflate the HDF.Z files using python zlib library…

> You could use the Unix command `file` to see what type that file is. Maybe
> it is not a deflated file but a Zip file?

> Regards,
> Oliver

> --
> Oliver Tonnhofer    | Omniscale GmbH & Co KG    | http://omniscale.de
> http://mapproxy.org | https://bitbucket.org/olt | @oltonn