Re: [sage-windows] Re: gtalk chat request
William Stein
> I am wondering if matplotlib working on windows port of sage, examples?
Yes. Though I think we currently build it with no GUI backends, so
you can create plots, but you can only render them to PNG's. (You use
savefig, I think.) It would be nice for a windows guru to fix things
so that a GUI backend works. Presumably windows has a windowing
library that works out of the box everywhere! :-).
As far as I can tell, sympy, scipy, and numpy all work perfectly in
sage-windows.
Sympy gets you pretty far for symbolic computation. If you try
import sympy
sympy.<tab key>
you'll see it has a lot of symbolic manipulation capabilities. It
also has a plot command which does both 2d and 3d plots and works
perfectly under windows.
William
>
> On Wed, Jun 3, 2009 at 3:50 PM, William Stein <wst...@gmail.com> wrote:
>>
>> On Wed, Jun 3, 2009 at 12:43 PM, Blair Sutton <bla...@googlemail.com> wrote:
>> > Oh right. Usually best to ask at google groups
>> > (http://groups.google.co.uk/group/sage-windows).
>> >
>> > Right now Sage-Windows is fairly basic and only the IPython shell with some
>> > math libraries is installed. We intend to update the distribution gradually.
>> >
>> > I expect that by version 0.40 we should have a system similar in usability
>> > to the UNIX port although perhaps lacking super computational power.
>>
>> I think it is impossible to tell how long until we'll be done. E.g.,
>> we had no clue
>> how long it would take to get PARI running with MSVC, except that Dan
>> Shumow said he
>> tried for a few hours and "it didn't work". Then we tried again
>> during Sage Days for about 2 hours,
>> and everything nicely fell into place and it works well. I think it
>> is basically impossible to predict
>> how long it will take to get any component of sage to build with MSVC,
>> and the best we can do is
>> to just try. Just over half the components of Sage are in sage-windows.
>>
>> William
>>
>>
>> >
>> > I have CCed this to the main list for future readers.
>> >
>> > On Wed, Jun 3, 2009 at 8:36 PM, bill pines <bill...@gmail.com> wrote:
>> >>
>> >> I want to ask question about sage, I could not run 0.37 on vista. I only
>> >> got ipython shell, do not know how to start sage. But no people answer my
>> >> question.
>
>
--
William Stein
Associate Professor of Mathematics
University of Washington
http://wstein.org
Ondrej Certik
>
> 2009/6/4 bill pines <bill...@gmail.com>:
>> I am wondering if matplotlib working on windows port of sage, examples?
>
> Yes. Though I think we currently build it with no GUI backends, so
> you can create plots, but you can only render them to PNG's. (You use
> savefig, I think.) It would be nice for a windows guru to fix things
Unfortunately, this doesn't work, at least for me:
In [6]: pylab.savefig("C:\Users\Ondrej\Desktop\a.png")
---------------------------------------------------------------------------
IOError Traceback (most recent call last)
[...]
C:\Program Files\Sage Math\local\python\lib\site-packages\matplotlib\backends\ba
ckend_agg.py in print_png(self, filename_or_obj, *args, **kwargs)
326 renderer.dpi = self.figure.dpi
327 if is_string_like(filename_or_obj):
--> 328 filename_or_obj = file(filename_or_obj, 'wb')
329 _png.write_png(renderer._renderer.buffer_rgba(0, 0),
330 renderer.width, renderer.height,
IOError: [Errno 22] invalid mode ('wb') or filename: 'C:\\Users\\Ondrej\\Desktop
\x07.png'
but the path is correct as checked by:
In [15]: os.system("dir "+"C:\Users\Ondrej\Desktop")
Volume in drive C has no label.
Volume Serial Number is AC4D-7A9B
Directory of C:\Users\Ondrej\Desktop
06/04/2009 09:47 AM <DIR> .
06/04/2009 09:47 AM <DIR> ..
06/03/2009 01:47 AM 72,169,316 sage-0.3.7.RC2.msi
06/04/2009 09:47 AM <DIR> sage-windows-0.3.7.RC2
06/04/2009 08:15 AM 67,843,793 sage-windows-0.3.7.RC2.zip
2 File(s) 140,013,109 bytes
3 Dir(s) 10,902,740,992 bytes free
Out[15]: 0
But python doesn't allow me to open any file in there in the write mode:
In [16]: open("C:\Users\Ondrej\Desktop\a.txt", "w")
---------------------------------------------------------------------------
IOError Traceback (most recent call last)
C:\Program Files\Sage Math\<ipython console> in <module>()
IOError: [Errno 22] invalid mode ('w') or filename: 'C:\\Users\\Ondrej\\Desktop\
x07.txt'
Thus matplotlib also fails.
> so that a GUI backend works. Presumably windows has a windowing
> library that works out of the box everywhere! :-).
Yeah, that'd be awesome.
>
> As far as I can tell, sympy, scipy, and numpy all work perfectly in
> sage-windows.
> Sympy gets you pretty far for symbolic computation. If you try
>
> import sympy
> sympy.<tab key>
>
> you'll see it has a lot of symbolic manipulation capabilities. It
> also has a plot command which does both 2d and 3d plots and works
> perfectly under windows.
That's right, nice. Unfortunately no one has worked on the pyglet
based plotting in sympy for almost 2 years already.
I still hope someone will show up and port it as a matplotlib backend. :)
Ondrej
Robert Kern
>
> On Thu, Jun 4, 2009 at 9:42 AM, William Stein <wst...@gmail.com> wrote:
>>
>> 2009/6/4 bill pines <bill...@gmail.com>:
>>> I am wondering if matplotlib working on windows port of sage, examples?
>>
>> Yes. Though I think we currently build it with no GUI backends, so
>> you can create plots, but you can only render them to PNG's. (You use
>> savefig, I think.) It would be nice for a windows guru to fix things
>
> Unfortunately, this doesn't work, at least for me:
>
> In [6]: pylab.savefig("C:\Users\Ondrej\Desktop\a.png")
> ---------------------------------------------------------------------------
> IOError Traceback (most recent call last)
> [...]
> C:\Program Files\Sage Math\local\python\lib\site-packages\matplotlib\backends\ba
> ckend_agg.py in print_png(self, filename_or_obj, *args, **kwargs)
> 326 renderer.dpi = self.figure.dpi
> 327 if is_string_like(filename_or_obj):
> --> 328 filename_or_obj = file(filename_or_obj, 'wb')
> 329 _png.write_png(renderer._renderer.buffer_rgba(0, 0),
> 330 renderer.width, renderer.height,
>
> IOError: [Errno 22] invalid mode ('wb') or filename: 'C:\\Users\\Ondrej\\Desktop
> \x07.png'
Watch your backslashes! \a is the bell character.
--
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
Ondrej Certik
>
> On Thu, Jun 4, 2009 at 11:21, Ondrej Certik <ond...@certik.cz> wrote:
>>
>> On Thu, Jun 4, 2009 at 9:42 AM, William Stein <wst...@gmail.com> wrote:
>>>
>>> 2009/6/4 bill pines <bill...@gmail.com>:
>>>> I am wondering if matplotlib working on windows port of sage, examples?
>>>
>>> Yes. Though I think we currently build it with no GUI backends, so
>>> you can create plots, but you can only render them to PNG's. (You use
>>> savefig, I think.) It would be nice for a windows guru to fix things
>>
>> Unfortunately, this doesn't work, at least for me:
>>
>> In [6]: pylab.savefig("C:\Users\Ondrej\Desktop\a.png")
>> ---------------------------------------------------------------------------
>> IOError Traceback (most recent call last)
>> [...]
>> C:\Program Files\Sage Math\local\python\lib\site-packages\matplotlib\backends\ba
>> ckend_agg.py in print_png(self, filename_or_obj, *args, **kwargs)
>> 326 renderer.dpi = self.figure.dpi
>> 327 if is_string_like(filename_or_obj):
>> --> 328 filename_or_obj = file(filename_or_obj, 'wb')
>> 329 _png.write_png(renderer._renderer.buffer_rgba(0, 0),
>> 330 renderer.width, renderer.height,
>>
>> IOError: [Errno 22] invalid mode ('wb') or filename: 'C:\\Users\\Ondrej\\Desktop
>> \x07.png'
>
> Watch your backslashes! \a is the bell character.
Right, William just pointed out on the sage-windows list too. It was
my fault, I have to learn how things work in windows. But windows7 is
pretty cool, it looks quite nice.
Ondrej