[sage-support] Re: stat functions
On Jun 30, 2009, at 9:26 AM, Mikie wrote:
> OK, I have the string to list created. I have created the function to
> calculate a mean of a list. This is in the python script. Using
> spipy I am getting " 'module' obj. is not callable'
There is really not enough information here to answer your question.
Hopefully it's something trivial. A self-contained code snippet and
traceback would go a long ways.
>
> On Jun 30, 10:04 am, Robert Bradshaw
> wrote:
>> On Jun 30, 2009, at 8:23 AM, Mikie wrote:
>>
>>> How does one convert a string to a list?
>>
>> There are lots of ways to do that in Python--depends on what kind of
>> a list you have. For example, if I have a string list of elliptic
>> curve labels, and want a list of curves...
>>
>> sage: s = "37a|15a|389a"
>> sage: [EllipticCurve(ss) for ss in s.split('|')]
>> [Elliptic Curve defined by y^2 + y = x^3 - x over Rational Field,
>> Elliptic Curve defined by y^2 + x*y + y = x^3 + x^2 - 10*x - 10
>> over Rational Field,
>> Elliptic Curve defined by y^2 + y = x^3 + x^2 - 2*x over Rational
>> Field]
>>
>> You can do the same or integers, real numbers, symbolic equations
>> (use SR(ss)), with any separator, etc. Python has a lot of
>> documentation on string processing.
>>
>>
>>
>>> Try my new API pirsqrt.com:1843. Try to break it. If you put
>>> something bad into it use the back arrow on the browser.
>>
>>> On Jun 29, 4:14 pm, William Stein wrote:
On Tue, Jun 30, 2009 at 12:13 AM,
Mikie wrote:
>>
> Before I get too excited can use Scipy in a python script(My
> twisted
> API)
>>
Yes.
>>
> Thanks William
>>
> On Jun 29, 3:54 pm, William Stein wrote:
>> On Mon, Jun 29, 2009 at 11:44 PM,
>> Mikie wrote:
>>
>>> I have looked a lot. Any docs on the stat(mean, stdev, median,
>>> etc)
>>> functions? Does Sage have any stat functions?
>>
>> You might find the worksheets from week 6 here useful:
>>
>> http://wiki.wstein.org/09/480b/schedule
>>
>> William Stein
>> Associate Professor of Mathematics
>> University of Washingtonhttp://wstein.org
>>
--
William Stein
Associate Professor of Mathematics
University of Washingtonhttp://wstein.org-Hide quoted text -
>>
- Show quoted text -- Hide quoted text -
>>
>> - Show quoted text -
> >
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[sage-support] Re: build errors for sage 4.0.1 on Fedora 11
OK, sorry about that. I now realize that there is an spkg in ticket #6362 which appears to fix this. So I'll try downloading that. -Mike --~--~-~--~~~---~--~~ To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URLs: http://www.sagemath.org -~--~~~~--~~--~--~---
[sage-support] Re: build errors for sage 4.0.1 on Fedora 11
On Jun 25, 2:18 pm, William Stein wrote: > On Thu, Jun 25, 2009 at 8:19 PM, Mike Witt wrote: > > > Was this ever resolved. I'm having the same problem with sage-4.0.2. > > Should I be building a different version? > > We reported this to the Singular group, they agreed it is a bug, and they > fixed it in their version. I don't know if it has been fixed for the > upcoming sage-4.1 yet or not. I hope so. This probably falls into the 'dumb question' category, but I'm not clear on how to proceed. I couldn't find a ticket related to this, and I can't figure out (1) How to tell when there's a version available that will build on FC11, or (2) how to patch 4.0.2 so that it will build. I guess it just needs a cast(?) but I don't understand where it goes (not directly into febase.cc I presume). If anyone has time to either educate me a little, or point me to relevant information ... -Mike --~--~-~--~~~---~--~~ To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URLs: http://www.sagemath.org -~--~~~~--~~--~--~---
[sage-support] Re: inverse_laplace() function: how does it work?
On Tue, Jun 30, 2009 at 4:26 PM, Fausto Arinos
Barbuto wrote:
>
>
> Hi all,
>
> I'm afraid this question has already appeared in this forum, but here it goes
> again.
>
> I'm curious about why the inverse_laplace() function can't successfully
> invert some
> well-known, nevertheless rather simple, functions. Let's take exp(-as)/s as
> an
> example, whose inverse is the Heaviside function H(t-a):
>
> var('s,t')
> f = (exp(-s)/s).inverse_laplace(s,t); f
>
> The evaluation of the second line produces:
>
> ilt(e^(-s)/s, s, t)
>
> Which, obviously, is not a satisfactory answer. What happens here?
>
> How does inverse_laplace() work?
Right now, inverse_laplace calls maxima and the Heaviside function is not yet
well-integrated into maxima.
http://maxima.sourceforge.net/docs/manual/en/maxima_20.html#Item_003a-ilt
http://maxima.sourceforge.net/docs/manual/en/maxima_19.html#Item_003a-laplace
>
> Regards,
>
> Fausto
>
>
>
> >
>
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[sage-support] inverse_laplace() function: how does it work?
Hi all,
I'm afraid this question has already appeared in this forum, but here it goes
again.
I'm curious about why the inverse_laplace() function can't successfully invert
some
well-known, nevertheless rather simple, functions. Let's take exp(-as)/s as an
example, whose inverse is the Heaviside function H(t-a):
var('s,t')
f = (exp(-s)/s).inverse_laplace(s,t); f
The evaluation of the second line produces:
ilt(e^(-s)/s, s, t)
Which, obviously, is not a satisfactory answer. What happens here?
How does inverse_laplace() work?
Regards,
Fausto
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[sage-support] Re: stat functions
OK, I have the string to list created. I have created the function to
calculate a mean of a list. This is in the python script. Using
spipy I am getting " 'module' obj. is not callable'
On Jun 30, 10:04 am, Robert Bradshaw
wrote:
> On Jun 30, 2009, at 8:23 AM, Mikie wrote:
>
> > How does one convert a string to a list?
>
> There are lots of ways to do that in Python--depends on what kind of
> a list you have. For example, if I have a string list of elliptic
> curve labels, and want a list of curves...
>
> sage: s = "37a|15a|389a"
> sage: [EllipticCurve(ss) for ss in s.split('|')]
> [Elliptic Curve defined by y^2 + y = x^3 - x over Rational Field,
> Elliptic Curve defined by y^2 + x*y + y = x^3 + x^2 - 10*x - 10
> over Rational Field,
> Elliptic Curve defined by y^2 + y = x^3 + x^2 - 2*x over Rational
> Field]
>
> You can do the same or integers, real numbers, symbolic equations
> (use SR(ss)), with any separator, etc. Python has a lot of
> documentation on string processing.
>
>
>
> > Try my new API pirsqrt.com:1843. Try to break it. If you put
> > something bad into it use the back arrow on the browser.
>
> > On Jun 29, 4:14 pm, William Stein wrote:
> >> On Tue, Jun 30, 2009 at 12:13 AM,
> >> Mikie wrote:
>
> >>> Before I get too excited can use Scipy in a python script(My twisted
> >>> API)
>
> >> Yes.
>
> >>> Thanks William
>
> >>> On Jun 29, 3:54 pm, William Stein wrote:
> On Mon, Jun 29, 2009 at 11:44 PM,
> Mikie wrote:
>
> > I have looked a lot. Any docs on the stat(mean, stdev, median,
> > etc)
> > functions? Does Sage have any stat functions?
>
> You might find the worksheets from week 6 here useful:
>
> http://wiki.wstein.org/09/480b/schedule
>
> William Stein
> Associate Professor of Mathematics
> University of Washingtonhttp://wstein.org
>
> >> --
> >> William Stein
> >> Associate Professor of Mathematics
> >> University of Washingtonhttp://wstein.org-Hide quoted text -
>
> >> - Show quoted text -- Hide quoted text -
>
> - Show quoted text -
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[sage-support] Re: stat functions
On Jun 30, 2009, at 8:23 AM, Mikie wrote:
> How does one convert a string to a list?
There are lots of ways to do that in Python--depends on what kind of
a list you have. For example, if I have a string list of elliptic
curve labels, and want a list of curves...
sage: s = "37a|15a|389a"
sage: [EllipticCurve(ss) for ss in s.split('|')]
[Elliptic Curve defined by y^2 + y = x^3 - x over Rational Field,
Elliptic Curve defined by y^2 + x*y + y = x^3 + x^2 - 10*x - 10
over Rational Field,
Elliptic Curve defined by y^2 + y = x^3 + x^2 - 2*x over Rational
Field]
You can do the same or integers, real numbers, symbolic equations
(use SR(ss)), with any separator, etc. Python has a lot of
documentation on string processing.
> Try my new API pirsqrt.com:1843. Try to break it. If you put
> something bad into it use the back arrow on the browser.
>
> On Jun 29, 4:14 pm, William Stein wrote:
>> On Tue, Jun 30, 2009 at 12:13 AM,
>> Mikie wrote:
>>
>>> Before I get too excited can use Scipy in a python script(My twisted
>>> API)
>>
>> Yes.
>>
>>
>>
>>
>>
>>> Thanks William
>>
>>> On Jun 29, 3:54 pm, William Stein wrote:
On Mon, Jun 29, 2009 at 11:44 PM,
Mikie wrote:
>>
> I have looked a lot. Any docs on the stat(mean, stdev, median,
> etc)
> functions? Does Sage have any stat functions?
>>
You might find the worksheets from week 6 here useful:
>>
http://wiki.wstein.org/09/480b/schedule
>>
William Stein
Associate Professor of Mathematics
University of Washingtonhttp://wstein.org
>>
>> --
>> William Stein
>> Associate Professor of Mathematics
>> University of Washingtonhttp://wstein.org- Hide quoted text -
>>
>> - Show quoted text -
> >
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[sage-support] Re: How can calculate the time of execution of a command in sage
On Tue, Jun 30, 2009 at 4:58 PM, faicel wrote: > > I look for the command allowing to have the time of execution of a > command in sage > Also, use the "time" command, e.g., sage: time 2+2 CPU times: user 0.00 s, sys: 0.00 s, total: 0.00 s Wall time: 0.00 s 4 sage: william --~--~-~--~~~---~--~~ To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URLs: http://www.sagemath.org -~--~~~~--~~--~--~---
[sage-support] Re: How can calculate the time of execution of a command in sage
On 30-Jun-09, at 10:58 , faicel wrote:
> I look for the command allowing to have the time of execution of a
> command in sage
sage: timeit?
...
Docstring:
Time execution of a command or block of commands. Displays the
best WALL TIME for execution of the given code. This is
based on
the Python timeit module, which avoids a number of common traps
for measuring execution times. It is also based on IPython's
%timeout command.
TYPICAL INPUT FORMAT:
timeit(statement, preparse=None, number=0, repeat=3,
precision=3)
EXAMPLES:
sage: timeit('2^1')
625 loops, best of 3: ... per loop
...
--
Kevin Horton
Ottawa, Canada
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[sage-support] Re: stat functions
How does one convert a string to a list? Try my new API pirsqrt.com:1843. Try to break it. If you put something bad into it use the back arrow on the browser. On Jun 29, 4:14 pm, William Stein wrote: > On Tue, Jun 30, 2009 at 12:13 AM, Mikie wrote: > > > Before I get too excited can use Scipy in a python script(My twisted > > API) > > Yes. > > > > > > > Thanks William > > > On Jun 29, 3:54 pm, William Stein wrote: > >> On Mon, Jun 29, 2009 at 11:44 PM, Mikie wrote: > > >> > I have looked a lot. Any docs on the stat(mean, stdev, median, etc) > >> > functions? Does Sage have any stat functions? > > >> You might find the worksheets from week 6 here useful: > > >>http://wiki.wstein.org/09/480b/schedule > > >> William Stein > >> Associate Professor of Mathematics > >> University of Washingtonhttp://wstein.org > > -- > William Stein > Associate Professor of Mathematics > University of Washingtonhttp://wstein.org- Hide quoted text - > > - Show quoted text - --~--~-~--~~~---~--~~ To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URLs: http://www.sagemath.org -~--~~~~--~~--~--~---
[sage-support] How can calculate the time of execution of a command in sage
I look for the command allowing to have the time of execution of a command in sage Thank you in advance --~--~-~--~~~---~--~~ To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URLs: http://www.sagemath.org -~--~~~~--~~--~--~---
[sage-support] Re: numpy.random
On Tue, Jun 30, 2009 at 5:59 AM, Ahmed Fasih wrote: > > On Jun 29, 8:37 pm, Kevin Horton wrote: >> It would be nice if that wiki FAQ mentioned the option of using an "r" >> suffix. I didn't know about that possibility until now. >> >> I tried to set up a wiki account so I could edit the page, but that >> didn't seem to work. > > Took the liberty of doing so (forgive me for any breach of protocol): Stepping in and getting stuff done isn't a breach of protocol -- it is the protocol with Sage. Thanks! > http://wiki.sagemath.org/faq#Typeissuesusingscipy.2CcvxoptornumpyfromSage > please feel free to edit as you see fit. > > > -- William Stein Associate Professor of Mathematics University of Washington http://wstein.org --~--~-~--~~~---~--~~ To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URLs: http://www.sagemath.org -~--~~~~--~~--~--~---
