On Sat, Jul 25, 2009 at 5:08 PM, Stephen Hartke wrote:
> Might this be related to how binomial is evaluated using GiNaC? Similar
> problems occur when replacing binomial with log.
Valgrind says yes:
==26568== 4 bytes in 1 blocks are definitely lost in loss record 35 of 3,312
==26568==at 0x
On Sat, Jul 25, 2009 at 6:04 PM, Justin C. Walker wrote:
> > I noticed that in the notebook, the code does create a problem,
> ^ not??
> > but random values do.
>
Yes, I missed a "not".
> Yup. I now see what you see: memory usage increases after
Rafael Costa wrote:
> Why Sage not execute the python code?
>
Please see the identically named thread on sage-devel today for lots
more comments and a working version of the code.
http://groups.google.com/group/sage-devel/browse_thread/thread/fd1414514c5d83b2
Thanks,
Jason
--~--~-
On Jul 25, 2009, at 15:08 , Stephen Hartke wrote:
> On Sat, Jul 25, 2009 at 1:54 PM, Justin C. Walker
> wrote:
>
>> I just tried this on 4.0.2 and 4.1 (on Mac OS X, 10.5.7), and got the
>> same values before and after the loop, so something else must be
>> involved.
>>
>
> Justin,
>
> Thanks
On Sat, Jul 25, 2009 at 1:54 PM, Justin C. Walker wrote:
> I just tried this on 4.0.2 and 4.1 (on Mac OS X, 10.5.7), and got the
> same values before and after the loop, so something else must be
> involved.
>
Justin,
Thanks for your response! Did you run it from the command line or the
notebo
Hi Rafael,
On Sun, Jul 26, 2009 at 6:29 AM, Rafael Costa wrote:
>
> Why Sage not execute the python code?
>
> from scipy import *
> from pylab import *
>
> sample_rate=1000.00
> t=r_[0:0.6:1/sample_rate]
> N=len(t)
> s=sin(2*pi*50*t)+sin(2*pi*70*t+pi/4)
> S=fft(s)
> f=sample_rate*r_[0:(N/2)]/N
>
Why Sage not execute the python code?
from scipy import *
from pylab import *
sample_rate=1000.00
t=r_[0:0.6:1/sample_rate]
N=len(t)
s=sin(2*pi*50*t)+sin(2*pi*70*t+pi/4)
S=fft(s)
f=sample_rate*r_[0:(N/2)]/N
n=len(f)
plot(f,abs(S[0:n])/N)
error message:
Traceback (most recent call last):
Fil
On Sun, Jul 26, 2009 at 6:46 AM, pca wrote:
>
> Great ! Thanks!
>
> I see that you wrote that page, so may I suggest an improvement ?
>
> As a beginner, I did see that page when starting to use the notebook,
> but I scanned the first couple of items, and thought I did not really
> need to know any
Great ! Thanks!
I see that you wrote that page, so may I suggest an improvement ?
As a beginner, I did see that page when starting to use the notebook,
but I scanned the first couple of items, and thought I did not really
need to know anything about "attaching scripts" or "Autoevaluate Cells
on
On Sat, Jul 25, 2009 at 1:24 PM, pca wrote:
>
> Thanks William,
>
> I found your post about the shift-click interesting.
>
> You may know how to remove an empty input cell from the notebook:
> could you share your tip ?
Delete all contents of the cell, then press "backspace".
> Is this explaine
Thanks William,
I found your post about the shift-click interesting.
You may know how to remove an empty input cell from the notebook:
could you share your tip ? Is this explained anywhere in the Notebook
documentation ? I couldn't find it. As a workaround, I'm clicking on
the Edit tab to edit
GREAT ! Thanks for the amazing support !
I have just used Sage for one day, and I was disappointed by this side-
effect. But with such an outstanding support, I'm now convinced it's
the tool to use !
PC
On 25 juil, 22:07, William Stein wrote:
> On Sat, Jul 25, 2009 at 12:31 PM, pca wrote:
>
>
On Sat, Jul 25, 2009 at 12:31 PM, pca wrote:
>
> Dear all,
>
> I have been puzzled, and annoyed, by an unexpected side-effect. It
> can be demonstrated in the notebook by the following example. It
> models the speed as distance / time, then solve for the distance, then
> evaluate the distance wi
Thank you for your quick answer, Minh.
Although it would give the correct answer, it does not satisfy my wish
to distinguish constants from parameters. In my engineering pblm, I
have a set of several constants that I use in many statements, and I
wish to keep them together nicely, and use them in
Hi Pierre,
On Sun, Jul 26, 2009 at 5:31 AM, pca wrote:
>
> Dear all,
>
> I have been puzzled, and annoyed, by an unexpected side-effect. It
> can be demonstrated in the notebook by the following example. It
> models the speed as distance / time, then solve for the distance, then
> evaluate the
Dear all,
I have been puzzled, and annoyed, by an unexpected side-effect. It
can be demonstrated in the notebook by the following example. It
models the speed as distance / time, then solve for the distance, then
evaluate the distance with different arguments:
var('v d t')
equation = v == d /
On Jul 25, 2009, at 9:38 AM, William Stein wrote:
>
> On Fri, Jul 24, 2009 at 2:19 PM, Robert
> Bradshaw wrote:
>>
>> On Jul 24, 2009, at 11:22 AM, Simon King wrote:
>>
>>>
>>> I think it would be nice to have the possibility to do the
>>> following
>>> in doc tests:
>>>
>>> """
>>> EXAMPLES:
On Jul 25, 2009, at 08:08 , Stephen Hartke wrote:
> The following code ends up using a lot of memory:
>
> print get_memory_usage()
> for i in range(10):
>b=binomial(5,2)
> print get_memory_usage()
>
> Output:
> 133.48828125
> 135.015625
I just tried this on 4.0.2 and 4.1 (on Mac OS X, 1
On Fri, Jul 24, 2009 at 2:19 PM, Robert
Bradshaw wrote:
>
> On Jul 24, 2009, at 11:22 AM, Simon King wrote:
>
>>
>> I think it would be nice to have the possibility to do the following
>> in doc tests:
>>
>> """
>> EXAMPLES::
>>
>> sage: R. = QQ[]
>> #
>> sage: I = ... # some nasty id
The following code ends up using a lot of memory:
print get_memory_usage()
for i in range(10):
b=binomial(5,2)
print get_memory_usage()
Output:
133.48828125
135.015625
So 1.5 extra megabytes is used after the 100,000 calls of binomial. If
repeated calls to binomial are made, eventually
On Jul 24, 2009, at 11:22 AM, Simon King wrote:
>
> I think it would be nice to have the possibility to do the following
> in doc tests:
>
> """
> EXAMPLES::
>
> sage: R. = QQ[]
> #
> sage: I = ... # some nasty ideal
> sage: G = I.groebner_basis()
> #>
> sage: GM = I.groe
On Jul 24, 6:52 pm, William Stein wrote:
> I can think of no reason it would be dangerous to do that. Just
> control the files of the form worksheet.txt, since they determine the
> worksheets.
>
> I can also not think of a simpler way to accomplish this.
>
> William
Thanks them. It's done, and
> On Jul 24, 3:10 pm, MaxTheMouse wrote:
>
> > I gave it a quick trial and got a syntax error.
>
> Can you tell me which polynomial it crashed on (i.e., what D is after
> the crash)?
>
> I had been getting syntax errors on that statement before, but I
> realized it was because Axiom sticks extra
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