[Numpy-discussion] calling numpy from java
hi all, is it possible to use numpy functions (like eigh()..etc)from java code? isthere a java wrapper for numpy? thanks wilson ___ Numpy-discussion mailing list Numpy-discussion@scipy.org http://projects.scipy.org/mailman/listinfo/numpy-discussion
Re: [Numpy-discussion] calling numpy from java
On Sun, Jul 6, 2008 at 07:55, wilson <[EMAIL PROTECTED]> wrote: > hi all, > is it possible to use numpy functions (like eigh()..etc)from java > code? Not particularly, no. > isthere a java wrapper for numpy? No. -- Robert Kern "I have come to believe that the whole world is an enigma, a harmless enigma that is made terrible by our own mad attempt to interpret it as though it had an underlying truth." -- Umberto Eco ___ Numpy-discussion mailing list Numpy-discussion@scipy.org http://projects.scipy.org/mailman/listinfo/numpy-discussion
Re: [Numpy-discussion] calling numpy from java
On Sun, Jul 6, 2008 at 9:55 PM, wilson <[EMAIL PROTECTED]> wrote: > hi all, > is it possible to use numpy functions (like eigh()..etc)from java > code? isthere a java wrapper for numpy? As Robert said, not really possible. A large part of numpy (around 50%) is pure C, of which a large part is tied to the python C api. If all you want is some linear algebra things like eigh, I would be really surprised if java did not have wrappers around LAPACK, though, so that's where you should look. cheers, David ___ Numpy-discussion mailing list Numpy-discussion@scipy.org http://projects.scipy.org/mailman/listinfo/numpy-discussion
Re: [Numpy-discussion] calling numpy from java
David Cournapeau wrote: > On Sun, Jul 6, 2008 at 9:55 PM, wilson <[EMAIL PROTECTED]> wrote: >> hi all, >> is it possible to use numpy functions (like eigh()..etc)from java >> code? isthere a java wrapper for numpy? Yes, it is possible, but not yet 100% convenient. Have a look at jepp, from jepp.sourceforge.net. The idiom is something like array.tostring being picked up as a floatarray or bytearray in java. Best, Jon ___ Numpy-discussion mailing list Numpy-discussion@scipy.org http://projects.scipy.org/mailman/listinfo/numpy-discussion
Re: [Numpy-discussion] NumPy, buffers (PEP 3118), complex floats, and Cython
Travis E. Oliphant wrote:
> Dag Sverre Seljebotn wrote:
>> I'd like some advice for what way people feel would be the best for
>> supporting complex datatypes in NumPy in Cython; as well as ask in what
>> way it is likely that NumPy will make use of PEP 3118.
>>
>> It seems like NumPy defines its complex data to be a struct of two
>> doubles, for instance:
>>
>> typedef struct { double real, imag; } npy_cdouble;
>>
>> According to PEP 3118 [1], it would be natural to export this as "dd"
>> (record of two doubles) rather than "Zd" (complex double), when
>> exporting ndarrays through a buffer interface. Right?
>>
> No, it is more natural to use Zd because then you know you are dealing
> with complex numbers and not just two separate floats.
I guess my confusion comes from assuming the wrong thing about what
"complex double" refers to in the PEP; since that's the only reference I
found to the concept in the PEP I assumed it corresponded to the C99
float.
Can I assume then that Zd means that the data always has the form of
npy_cdouble and friends? (I guess this might seem "obvious", but as you
see I've already had one wrong guess, and I can't seem to find it
defined anywhere...)
--
Dag Sverre
___
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Re: [Numpy-discussion] Enthought Python Distribution
On Jul 2, 2008, at 9:34 AM, Travis Vaught wrote: > Greetings, > > We're pleased to announce the beta release of the Enthought Python > Distribution for *Mac OS X*. > Oh Happiness, Oh Joy. I'm downloading it now. Have a virtual beer on me until I can get to Austin and buy you all a real one. /s/ Bob ___ Numpy-discussion mailing list Numpy-discussion@scipy.org http://projects.scipy.org/mailman/listinfo/numpy-discussion
Re: [Numpy-discussion] Numpy-discussion Digest, Vol 22, Issue 21
> Message: 4
> Date: Sun, 06 Jul 2008 13:36:24 +0900
> From: David Cournapeau <[EMAIL PROTECTED]>
> Subject: Re: [Numpy-discussion] Numpy on AIX 5.3
> To: Discussion of Numerical Python
> Message-ID: <[EMAIL PROTECTED]>
> Content-Type: text/plain; charset=ISO-8859-1
>
> Marek Wojciechowski wrote:
> > Hi!
> >
> > I'm trying to install numpy-1.1 on AIX 5.3 but i'm getting an error:
> >
> > running build
> > running scons
> > customize UnixCCompiler
> > Found executable /usr/bin/cc_r
> > customize IBMFCompiler
> > Found executable /usr/bin/xlf90
> > Found executable /usr/bin/xlf
> > Found executable /usr/bin/xlf95
> > Creating /tmp/tmp5j_OiW/qV0MJ4_xlf.cfg
> > customize IBMFCompiler
> > Creating /tmp/tmp5j_OiW/-LWcxB_xlf.cfg
> > customize UnixCCompiler
> > customize UnixCCompiler using scons
> > Traceback (most recent call last):
> > File "setup.py", line 96, in
> > setup_package()
> > File "setup.py", line 89, in setup_package
> > configuration=configuration )
> > File "/home/marek/tmp/numpy-1.1.0/numpy/distutils/core.py", line 184,
> > in setup
> > return old_setup(**new_attr)
> > File "/home/marek/apython/lib/python2.5/distutils/core.py", line 151,
> > in setup
> > dist.run_commands()
> > File "/home/marek/apython/lib/python2.5/distutils/dist.py", line 974,
> > in run_commands
> > self.run_command(cmd)
> > File "/home/marek/apython/lib/python2.5/distutils/dist.py", line 994,
> > in run_command
> > cmd_obj.run()
> > File "/home/marek/tmp/numpy-1.1.0/numpy/distutils/command/build.py",
> > line 38, in run
> > self.run_command('scons')
> > File "/home/marek/apython/lib/python2.5/distutils/cmd.py", line 333, in
> > run_command
> > self.distribution.run_command(command)
> > File "/home/marek/apython/lib/python2.5/distutils/dist.py", line 993,
> > in run_command
> > cmd_obj.ensure_finalized()
> > File "/home/marek/apython/lib/python2.5/distutils/cmd.py", line 117, in
> > ensure_finalized
> > self.finalize_options()
> > File "/home/marek/tmp/numpy-1.1.0/numpy/distutils/command/scons.py",
> > line 289, in finalize_options
> > self.cxxcompiler = cxxcompiler.cxx_compiler()
> > File "/home/marek/tmp/numpy-1.1.0/numpy/distutils/ccompiler.py", line
> > 303, in CCompiler_cxx_compiler
> > + cxx.linker_so[2:]
> > TypeError: can only concatenate list (not "str") to list
>
> Just by reading at the code, the line
>
> [cxx.linker_so[0]] + cxx.compiler_cxx[0] + cxx.linker_so[2:]
>
> Cannot work unless cxx.compiler_cxx is a nested list. Since AIX is not
> that common, it is well possible that this mistake was hidden for a long
> time. So I would first try something like:
>
> cxx.linker_so = [cxx.linker_so[0], cxx.compiler_cxx[0]] +cxx.linker_so[2:]
>
Yeah, this pushed building further. However there's another bug:
creating build/temp.aix-5.3-2.5/build
creating build/temp.aix-5.3-2.5/build/src.aix-5.3-2.5
creating build/temp.aix-5.3-2.5/build/src.aix-5.3-2.5/numpy
creating build/temp.aix-5.3-2.5/build/src.aix-5.3-2.5/numpy/core
creating build/temp.aix-5.3-2.5/build/src.aix-5.3-2.5/numpy/core/src
compile
options: '-Ibuild/src.aix-5.3-2.5/numpy/core/src -Inumpy/core/include
-Ibuild/src.aix-5.3-2.5/numpy/core -Inumpy/core/src -Inumpy/core/include
-I/home/marek/apython/include/python2.5 -I/home/marek/apython/include/python2.5
-c'
cc_r: build/src.aix-5.3-2.5/numpy/core/src/umathmodule.c
"numpy/core/src/umathmodule.c.src", line 1518.29: 1506-046 (S) Syntax error.
"numpy/core/src/umathmodule.c.src", line 1518.30: 1506-046 (S) Syntax error.
"numpy/core/src/umathmodule.c.src", line 1518.28: 1506-046 (S) Syntax error.
"numpy/core/src/umathmodule.c.src", line 1518.29: 1506-046 (S) Syntax error.
"numpy/core/src/umathmodule.c.src", line 1518.33: 1506-046 (S) Syntax error.
"numpy/core/src/umathmodule.c.src", line 1518.30: 1506-046 (S) Syntax error.
"numpy/core/src/umathmodule.c.src", line 1518.31: 1506-046 (S) Syntax error.
"numpy/core/src/umathmodule.c.src", line 1518.35: 1506-046 (S) Syntax error.
"numpy/core/src/umathmodule.c.src", line 1518.29: 1506-046 (S) Syntax error.
"numpy/core/src/umathmodule.c.src", line 1518.30: 1506-046 (S) Syntax error.
"numpy/core/src/umathmodule.c.src", line 1518.28: 1506-046 (S) Syntax error.
"numpy/core/src/umathmodule.c.src", line 1518.29: 1506-046 (S) Syntax error.
"numpy/core/src/umathmodule.c.src", line 1518.33: 1506-046 (S) Syntax error.
"numpy/core/src/umathmodule.c.src", line 1518.30: 1506-046 (S) Syntax error.
"numpy/core/src/umathmodule.c.src", line 1518.31: 1506-046 (S) Syntax error.
"numpy/core/src/umathmodule.c.src", line 1518.35: 1506-046 (S) Syntax error.
error:
Command "cc_r -DNDEBUG -O -Ibuild/src.aix-5.3-2.5/numpy/core/src
-Inumpy/core/include -Ibuild/src.aix-5.3-2.5/numpy/core -Inumpy/core/src
-Inumpy/core/include -I/home/marek/apython/include/python2.5
-I/home/marek/apython/include/python2.5 -c
build/src.aix-5.3-2.5/numpy/core/src/umathmodule.c -o
build/temp.aix-5.3-2.5/build/src.aix-5.3-2.5/numpy/core/src
Re: [Numpy-discussion] Numpy-discussion Digest, Vol 22, Issue 21
On Sun, Jul 6, 2008 at 11:05 AM, Marek Wojciechowski <[EMAIL PROTECTED]>
wrote:
> > Message: 4
> > Date: Sun, 06 Jul 2008 13:36:24 +0900
> > From: David Cournapeau <[EMAIL PROTECTED]>
> > Subject: Re: [Numpy-discussion] Numpy on AIX 5.3
> > To: Discussion of Numerical Python
> > Message-ID: <[EMAIL PROTECTED]>
> > Content-Type: text/plain; charset=ISO-8859-1
> >
> > Marek Wojciechowski wrote:
> > > Hi!
> > >
> > > I'm trying to install numpy-1.1 on AIX 5.3 but i'm getting an error:
> > >
> > > running build
> > > running scons
> > > customize UnixCCompiler
> > > Found executable /usr/bin/cc_r
> > > customize IBMFCompiler
> > > Found executable /usr/bin/xlf90
> > > Found executable /usr/bin/xlf
> > > Found executable /usr/bin/xlf95
> > > Creating /tmp/tmp5j_OiW/qV0MJ4_xlf.cfg
> > > customize IBMFCompiler
> > > Creating /tmp/tmp5j_OiW/-LWcxB_xlf.cfg
> > > customize UnixCCompiler
> > > customize UnixCCompiler using scons
> > > Traceback (most recent call last):
> > > File "setup.py", line 96, in
> > > setup_package()
> > > File "setup.py", line 89, in setup_package
> > > configuration=configuration )
> > > File "/home/marek/tmp/numpy-1.1.0/numpy/distutils/core.py", line 184,
> > > in setup
> > > return old_setup(**new_attr)
> > > File "/home/marek/apython/lib/python2.5/distutils/core.py", line 151,
> > > in setup
> > > dist.run_commands()
> > > File "/home/marek/apython/lib/python2.5/distutils/dist.py", line 974,
> > > in run_commands
> > > self.run_command(cmd)
> > > File "/home/marek/apython/lib/python2.5/distutils/dist.py", line 994,
> > > in run_command
> > > cmd_obj.run()
> > > File "/home/marek/tmp/numpy-1.1.0/numpy/distutils/command/build.py",
> > > line 38, in run
> > > self.run_command('scons')
> > > File "/home/marek/apython/lib/python2.5/distutils/cmd.py", line 333,
> in
> > > run_command
> > > self.distribution.run_command(command)
> > > File "/home/marek/apython/lib/python2.5/distutils/dist.py", line 993,
> > > in run_command
> > > cmd_obj.ensure_finalized()
> > > File "/home/marek/apython/lib/python2.5/distutils/cmd.py", line 117,
> in
> > > ensure_finalized
> > > self.finalize_options()
> > > File "/home/marek/tmp/numpy-1.1.0/numpy/distutils/command/scons.py",
> > > line 289, in finalize_options
> > > self.cxxcompiler = cxxcompiler.cxx_compiler()
> > > File "/home/marek/tmp/numpy-1.1.0/numpy/distutils/ccompiler.py", line
> > > 303, in CCompiler_cxx_compiler
> > > + cxx.linker_so[2:]
> > > TypeError: can only concatenate list (not "str") to list
> >
> > Just by reading at the code, the line
> >
> > [cxx.linker_so[0]] + cxx.compiler_cxx[0] + cxx.linker_so[2:]
> >
> > Cannot work unless cxx.compiler_cxx is a nested list. Since AIX is not
> > that common, it is well possible that this mistake was hidden for a long
> > time. So I would first try something like:
> >
> > cxx.linker_so = [cxx.linker_so[0], cxx.compiler_cxx[0]]
> +cxx.linker_so[2:]
> >
>
> Yeah, this pushed building further. However there's another bug:
>
> creating build/temp.aix-5.3-2.5/build
> creating build/temp.aix-5.3-2.5/build/src.aix-5.3-2.5
> creating build/temp.aix-5.3-2.5/build/src.aix-5.3-2.5/numpy
> creating build/temp.aix-5.3-2.5/build/src.aix-5.3-2.5/numpy/core
> creating build/temp.aix-5.3-2.5/build/src.aix-5.3-2.5/numpy/core/src
> compile
> options: '-Ibuild/src.aix-5.3-2.5/numpy/core/src -Inumpy/core/include
> -Ibuild/src.aix-5.3-2.5/numpy/core -Inumpy/core/src -Inumpy/core/include
> -I/home/marek/apython/include/python2.5
> -I/home/marek/apython/include/python2.5 -c'
> cc_r: build/src.aix-5.3-2.5/numpy/core/src/umathmodule.c
> "numpy/core/src/umathmodule.c.src", line 1518.29: 1506-046 (S) Syntax
> error.
> "numpy/core/src/umathmodule.c.src", line 1518.30: 1506-046 (S) Syntax
> error.
> "numpy/core/src/umathmodule.c.src", line 1518.28: 1506-046 (S) Syntax
> error.
> "numpy/core/src/umathmodule.c.src", line 1518.29: 1506-046 (S) Syntax
> error.
> "numpy/core/src/umathmodule.c.src", line 1518.33: 1506-046 (S) Syntax
> error.
> "numpy/core/src/umathmodule.c.src", line 1518.30: 1506-046 (S) Syntax
> error.
> "numpy/core/src/umathmodule.c.src", line 1518.31: 1506-046 (S) Syntax
> error.
> "numpy/core/src/umathmodule.c.src", line 1518.35: 1506-046 (S) Syntax
> error.
> "numpy/core/src/umathmodule.c.src", line 1518.29: 1506-046 (S) Syntax
> error.
> "numpy/core/src/umathmodule.c.src", line 1518.30: 1506-046 (S) Syntax
> error.
> "numpy/core/src/umathmodule.c.src", line 1518.28: 1506-046 (S) Syntax
> error.
> "numpy/core/src/umathmodule.c.src", line 1518.29: 1506-046 (S) Syntax
> error.
> "numpy/core/src/umathmodule.c.src", line 1518.33: 1506-046 (S) Syntax
> error.
> "numpy/core/src/umathmodule.c.src", line 1518.30: 1506-046 (S) Syntax
> error.
> "numpy/core/src/umathmodule.c.src", line 1518.31: 1506-046 (S) Syntax
> error.
> "numpy/core/src/umathmodule.c.src", line 1518.35: 1506-046 (S) Syntax
> error.
> error:
> Command "cc_r -DNDEBUG -O -Ibuild/src.
[Numpy-discussion] Schedule for the SciPy08 conferencez
We have received a large number of excellent contributions for papers for the SciPy 2008 conference. The program committee has had to make a difficult selection and we are happy to bring to you a preliminary schedule: Thursday = **8:00** Registration/Breakfast **8:55** Welcome (Travis Vaught) **9:10** Keynote (Alex Martelli) **10:00** State of SciPy (Travis Vaught, Jarrod Millman) **10:40** -- Break -- **11:00** Sympy - Python library for symbolic mathematics: introduction and applications (Ondřej Čertik) **11:40** Interval arithmetic: Python implementation and applications (Stefano Taschini) **12:00** Experiences Using Scipy for Computer Vision Research (Damian Eads) **12:20** -- Lunch -- **1:40** The new NumPy documentation framework (Stéfan Van der Walt) **2:00** Matplotlib solves the riddle of the sphinx (Michael Droettboom) **2:40** The SciPy documentation project (Joe Harrington) **3:00** -- Break -- **3:40** Sage: creating a viable free Python-based open source alternatice to Magma, Maple, Mathematica and Matlab (William Stein) **4:20** Open space for lightning talks Friday **8:30** Breakfast **9:00** Pysynphot: A Python Re-Implementation of a Legacy App in Astronomy (Perry Greenfield) **9:40** How the Large Synoptic Survey Telescope (LSST) is using Python (Robert Lupton) **10:00** Real-time Astronomical Time-series Classification and Broadcast Pipeline (Dan Starr) **10:20** Analysis and Visualization of Multi-Scale Astrophysical Simulations using Python and NumPy (Matthew Turk) **10:40** -- Break -- **11:00** Exploring network structure, dynamics, and function using NetworkX (Aric Hagberg) **11:40** Mayavi: Making 3D data visualization reusable (Prabhu Ramachandran, Gaël Varoquaux) **12:00** Finite Element Modeling of Contact and Impact Problems Using Python (Ryan Krauss) **12:20** -- Lunch -- **2:00** PyCircuitScape: A Tool for Landscape Ecology (Viral Shah) **2:20** Summarizing Complexity in High Dimensional Spaces (Karl Young) **2:40** UFuncs: A generic function mechanism in Python (Travis Oliphant) **3:20** -- Break -- **3:40** NumPy Optimization: Manual tuning and automated approaches (Evan Patterson) **4:00** Converting Python functions to dynamically-compiled C (Ilan Schnell) **4:20** unPython: Converting Python numerical programs into C (Rahul Garg) **4:40** Implementing the Grammar of Graphics for Python (Robert Kern) **5:00** Ask the experts session. A more detailled booklet including the abstract text will be available soon. We are looking forward to seeing you in Caltech, Gaël Varoquaux, on behalf of the program committee. -- SciPy2008 conference. Program committee Anne Archibald, McGill University Matthew Brett Perry Greenfield, Space Telescope Science Institute Charles Harris Ryan Krauss, Southern Illinois University Gaël Varoquaux Stéfan van der Walt, University of Stellenbosch ___ Numpy-discussion mailing list Numpy-discussion@scipy.org http://projects.scipy.org/mailman/listinfo/numpy-discussion
