[sage-support] install R packages
Hello! I tried to install package cluster for R and got this: -- | Sage Version 4.0.2, Release Date: 2009-06-18 | | Type notebook() for the GUI, and license() for information.| -- sage: r.install_package(cluster) Error: object sage1 not found sage: r.install_package(cluster) Error: object sage2 not found sage: r.install_package(cluster) Can somebody give a hint what is wrong? Thanks 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: primitive k-th root of unity
On Jul 14, 11:37 am, mac8090 bonzerpot...@hotmail.com wrote: For a given k, is it possible to instantly get an k-th root of unity in sage without making extra fields, or by using e^(2*pi*I/k)? I'm curious why you are so opposed to creating a number field. Basically, there are three one-liners you can use: CyclotomicField(k).gen() -- creates a number field element. CC.zeta(k) -- creates an inexact, fixed-precision approximation. QQbar.zeta(k) -- a clever hybrid, which behaves like an element of CC but also remembers that it's algebraic and can calculate itself to arbitrary precision if you ask it to. David --~--~-~--~~~---~--~~ 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: primitive k-th root of unity
On Tue, Jul 14, 2009 at 6:37 AM, mac8090bonzerpot...@hotmail.com wrote: For a given k, is it possible to instantly get an k-th root of unity in sage without making extra fields, or by using e^(2*pi*I/k)? I'm a bit confused by your question. If you mean k-th roots of unity in the complex field CC then sage: z = e^(2*pi*I/7) sage: z^7 1 works for me. If youmean the kth roots of unity in some other field (after all, every field contains 0 and 1) then you should specify the field to determine where you want the roots of x^k-1=0 to lie. On a similar note, anybody know why I can't get sage to equate e^ (theta*I) == cos(theta) + I*sin(theta) ? I don't know. Sage uses Maxima. Does maxima know Euler's formula? --~--~-~--~~~---~--~~ 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] Cython typedef not working
When I run this code: %cython %time import numpy as np cimport numpy as np COMPLEX = np.complex128 ctypedef np.complex128_t COMPLEX_t it gives me this error: ...code_sage30_spyx_0.pyx:10:9: 'complex128_t' is not a type identifier As far as I can tell my code should work. At one point I think I heard that this was a known issue and would be fixed in 4.1. Is it still not working, or am I doing something wrong? If it isn't working, is there any sort of work around I can do? Thanks for any help you can give, Ethan --~--~-~--~~~---~--~~ 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: Cython typedef not working
There is a ticket in progress to fix this. I've started reviewing it, I'm hopefully it'll go into 4.1.1. On Jul 14, 2009, at 7:11 AM, Ethan Van Andel wrote: When I run this code: %cython %time import numpy as np cimport numpy as np COMPLEX = np.complex128 ctypedef np.complex128_t COMPLEX_t it gives me this error: ...code_sage30_spyx_0.pyx:10:9: 'complex128_t' is not a type identifier As far as I can tell my code should work. At one point I think I heard that this was a known issue and would be fixed in 4.1. Is it still not working, or am I doing something wrong? If it isn't working, is there any sort of work around I can do? Thanks for any help you can give, Ethan --~--~-~--~~~---~--~~ 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: assume()
Hmm. I've also had trouble interpreting what assume() affects, and I'm glad to hear that I'm not the only one. What Robert says here helps a lot, but is there anything written anywhere else that goes into a bit more detail? I'm sure there's more to it than a missing filter on the output of solve. e.g., that doesn't explain Neal's other example: sage: assume(x == 1) sage: bool(x == 1) False I do a bunch of writing down equations, stating assumptions, and trying to prove inequalities. Understanding what assume() does and does not do could make my job a lot easier! --Doug --~--~-~--~~~---~--~~ 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] Newb basic algebra question
Hi all; I'm brand new to sage and am finding it really fun and useful. Of course, I don't know anyone else who uses it and thus need to rely on the general community when reading documentation and scratching my head leave me with open questions. Here's my first: sage: foo = (x-1)^2/(x+2)^2 + 2*(x-1)/(x+2) sage: bar = foo*(x+2) sage: bar (x + 2)*((x - 1)^2/(x + 2)^2 + 2*(x - 1)/(x + 2)) How come (x+2) isn't canceling in each of the parts? It does simplify if I multiply each additive part of foo separately: sage: foo1 = (x-1)^2/(x+2)^2 sage: bar1 = foo1*(x+2) sage: bar1 (x - 1)^2/(x + 2) sage: foo2 = 2*(x-1)/(x+2) sage: bar2 = foo2*(x+2) sage: bar2 2*x - 2 Any help would be much appreciated! -Doug --~--~-~--~~~---~--~~ 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: Newb basic algebra question
On Jul 14, 6:18 pm, Doug mcke...@gmail.com wrote: Hi all; I'm brand new to sage and am finding it really fun and useful. Great, welcome in the Sage family ;) Any help would be much appreciated! That's simply a matter of automatic simplification. Your more complex term with the sum is just not covered by those simplification rules. Others might tell you more details, but basically it's just that. Think about a much bigger term: There is no way that all possible simplifications are done automatically while still being fast. Of course, there are also simplification commands for the resulting term to do it on demand. H --~--~-~--~~~---~--~~ 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: Newb basic algebra question
On Jul 14, 2009, at 9:18 AM, Doug wrote: Hi all; I'm brand new to sage and am finding it really fun and useful. Thanks. Of course, I don't know anyone else who uses it and thus need to rely on the general community when reading documentation and scratching my head leave me with open questions. Note that Sage's calculus stuff, while still very useful, isn't as well developed as some of the other parts of Sage. We use maxima a s a backend, but it doesn't always do what we want, and is sometimes incompletely wrapped. (This is an area of active development.) Here's my first: sage: foo = (x-1)^2/(x+2)^2 + 2*(x-1)/(x+2) sage: bar = foo*(x+2) sage: bar (x + 2)*((x - 1)^2/(x + 2)^2 + 2*(x - 1)/(x + 2)) How come (x+2) isn't canceling in each of the parts? Probably because x might be -2. Also, you have to explicitly simplify to do any non-trivial transformations (because it may be expensive to do so). sage: bar.simplify_full() 3*(x^2 - 1)/(x + 2) - Robert --~--~-~--~~~---~--~~ 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] Sage Unum
I've been evaluating Sage for engineering applications. The one missing part, which after reading this forum I've realized is currently being worked on, is unit support. The best solution I've been able to use so far is Unum. It works well in my application, but in the notebook I'd like to be able to limit the number of digits shown. I'd previously been using print '%.3f to set the display, but it doesn't work with Unum numbers. I'm sure this would be better asked in an Unum forum, but I haven't found one and it seems a few people here have used the package. Also, on a more general note. Can you set the significant digits displayed throughout a notebook somehow? Thanks. --~--~-~--~~~---~--~~ 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: Is it possible to replace the list built-in type in Sage?
On Tue, Jul 14, 2009 at 3:01 AM, Paul Sargentpsa...@gmail.com wrote: On 13 Jul 2009, at 17:13, Robert Bradshaw wrote: In general, we try to avoid modifying the preparser as much as possible. Sometimes, we really have to sage: eval(1/2 + 3^2) 1 is really not acceptable (IMHO) for a serious alternative to other systems out there I know what you're getting at, but that's a rather cheeky example. '^' is the python XOR operator. '**' is the python exponent operator. To be honest, I'm not sure why sage re-writes '^' as '**'. As long as there's an operator that does the job, everything is good IMHO. Your perspective might change if you imagine giving colloquium talks to college teachers who have all used Mathematica + Latex for years, where ^ means exponent and / means divide (not floor divide). In my experience (having given dozens of such talks), such an audience would consider ^ not working right to be a deal breaker for many of them, and would not consider switching to Sage. The bigger point about the pre-parser is reasonable though. It should only do what's unavoidable (for appropriate values of unavoidable). +1 William -- 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 -~--~~~~--~~--~--~---
[sage-support] adding cells
I have several worksheets in my file list. Just created new notebook and I can only add about 7 cells. Why is this? Is there some kind of limit? Thanks --~--~-~--~~~---~--~~ 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: adding cells
Try reloading the page. Occaisonally things go wrong and there isn't actually a connection to the server, in which case the notebook looks OK but it won't let you make new cells. Do the cells that are already there actually work? -M. Hampton On Jul 14, 1:23 pm, Mikie thephantom6...@hotmail.com wrote: I have several worksheets in my file list. Just created new notebook and I can only add about 7 cells. Why is this? Is there some kind of limit? Thanks --~--~-~--~~~---~--~~ 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: Is it possible to replace the list built-in type in Sage?
Sorry for not answering before, I've being a bit busy. I'll try to give a concrete example of what I'm trying to do so you can understand me better. I have a list of real numbers, for example [1,2,3] I want to multiply by 2 to get [2,4,6] the to sum it to 3 [5,7,9] then divide by the max number [5/9, 7/9, 1] then convert every point to a point in the circle with [[cos(5/9), sin(5/9)], [cos(7/9), sin(7/9)], [cos(1), sin(1)]] Finally graph this thing with list_plot. To do this in Mathematica I just have to operate on the successive lists. But to do this on Sage I would have to transform the initial list into a vector or numpy array, do all the operations and finally transform the result again into a list of lists so I can plot it. I was hoping to avoid the transformation functions, which (in my humble opinion) make the code more verbose and can probably misguide those who read it later (why does he used vectors if the data are frequencies?) To do what I want I would have to modify the arithmetics methods of the list python built-in, so I can do 2 + [1,2,3] to get [3,4,5] instead of getting an error. Unfortunately that is forbidden by the language. Another option (mentioned by Marshall before) is to subclass list, with a MyList class for example, and then change the methods I want on it. But then I would have to wrap every list I use with MyList, which makes the code equally verbose. So the last thing that occurred to me was to modify the parser (or something like that) so that every list that I write in Sage be an instance of MyList instead of list, in the same spirit as every number in Sage is an instance of Integer or RealNumber and not of int and float. I hope you understand that my motivation is mainly aesthetic. I know that my problem can be easily solved in Sage. I just want to know if I can write more succinct and simpler code with just one type (a list), instead of doing several transformations and possibly writing more functions to do them. Thanks, Carlos On Tue, Jul 14, 2009 at 1:45 PM, William Stein wst...@gmail.com wrote: On Tue, Jul 14, 2009 at 3:01 AM, Paul Sargentpsa...@gmail.com wrote: On 13 Jul 2009, at 17:13, Robert Bradshaw wrote: In general, we try to avoid modifying the preparser as much as possible. Sometimes, we really have to sage: eval(1/2 + 3^2) 1 is really not acceptable (IMHO) for a serious alternative to other systems out there I know what you're getting at, but that's a rather cheeky example. '^' is the python XOR operator. '**' is the python exponent operator. To be honest, I'm not sure why sage re-writes '^' as '**'. As long as there's an operator that does the job, everything is good IMHO. Your perspective might change if you imagine giving colloquium talks to college teachers who have all used Mathematica + Latex for years, where ^ means exponent and / means divide (not floor divide). In my experience (having given dozens of such talks), such an audience would consider ^ not working right to be a deal breaker for many of them, and would not consider switching to Sage. The bigger point about the pre-parser is reasonable though. It should only do what's unavoidable (for appropriate values of unavoidable). +1 William -- 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 -~--~~~~--~~--~--~---
[sage-support] Re: Is it possible to replace the list built-in type in Sage?
On Jul 14, 1:52 pm, Carlos Córdoba ccordob...@gmail.com wrote: Sorry for not answering before, I've being a bit busy. I'll try to give a concrete example of what I'm trying to do so you can understand me better. I have a list of real numbers, for example [1,2,3] Python list comprehensions might be what you want -- see http://docs.python.org/tutorial/datastructures.html#list- comprehensions I want to multiply by 2 to get [2,4,6] sage: x = [1,2,3] sage: y = [2*a for a in x] the to sum it to 3 [5,7,9] sage: z = [b + 3 for b in y] then divide by the max number [5/9, 7/9, 1] sage: w = [a/max(z) for a in z] then convert every point to a point in the circle with [[cos(5/9), sin(5/9)], [cos(7/9), sin(7/9)], [cos(1), sin(1)]] sage: v = [[cos(a), sin(a)] for a in w] Is that helpful at all? John --~--~-~--~~~---~--~~ 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: Is it possible to replace the list built-in type in Sage?
Thanks John, I'd seen Python comprehensions before, but since I was trying to do all in a one-liner, I think I overlooked your elegant and simple solution. One comprehension at a time is quite neat, but several is just unreadable. On Tue, Jul 14, 2009 at 4:28 PM, John H Palmieri jhpalmier...@gmail.comwrote: On Jul 14, 1:52 pm, Carlos Córdoba ccordob...@gmail.com wrote: Sorry for not answering before, I've being a bit busy. I'll try to give a concrete example of what I'm trying to do so you can understand me better. I have a list of real numbers, for example [1,2,3] Python list comprehensions might be what you want -- see http://docs.python.org/tutorial/datastructures.html#list- comprehensions I want to multiply by 2 to get [2,4,6] sage: x = [1,2,3] sage: y = [2*a for a in x] the to sum it to 3 [5,7,9] sage: z = [b + 3 for b in y] then divide by the max number [5/9, 7/9, 1] sage: w = [a/max(z) for a in z] then convert every point to a point in the circle with [[cos(5/9), sin(5/9)], [cos(7/9), sin(7/9)], [cos(1), sin(1)]] sage: v = [[cos(a), sin(a)] for a in w] Is that helpful at all? John --~--~-~--~~~---~--~~ 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: Is it possible to replace the list built-in type in Sage?
2009/7/14 Carlos Córdoba ccordob...@gmail.com: Thanks John, I'd seen Python comprehensions before, but since I was trying to do all in a one-liner, I think I overlooked your elegant and simple solution. One comprehension at a time is quite neat, but several is just unreadable. That could be a function of familiarity. Quick poll -- Do you find the following just unreadable? x = [1,2,3] y = [2*a for a in x] z = [b + 3 for b in y] w = [a/max(z) for a in z] v = [[cos(a), sin(a)] for a in w] ANSWER: [ ] Yes, the above is just unreadable. [ ] No, I can read the above just fine. It is crystal clear. -- 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: Is it possible to replace the list built-in type in Sage?
On Jul 14, 3:35 pm, William Stein wst...@gmail.com wrote: 2009/7/14 Carlos Córdoba ccordob...@gmail.com: Thanks John, I'd seen Python comprehensions before, but since I was trying to do all in a one-liner, I think I overlooked your elegant and simple solution. One comprehension at a time is quite neat, but several is just unreadable. That could be a function of familiarity. Quick poll -- Do you find the following just unreadable? x = [1,2,3] y = [2*a for a in x] z = [b + 3 for b in y] w = [a/max(z) for a in z] v = [[cos(a), sin(a)] for a in w] ANSWER: [ ] Yes, the above is just unreadable. [ ] No, I can read the above just fine. It is crystal clear. I think it's readable, but I think the issue was whether this was unreadable: [[cos(a/9), sin(a/9)] for a in [b+3 for b in [2*c for c in [1,2,3 (This is using a/9 instead of a/max(z) since I don't know how to do 'max(z)' in a one-liner like this.) I think the above is not very readable, but of course you can write it as [[cos((2*a+3)/9), sin((2*a+3)/9)] for a in [1,2,3]] and it's not too bad. John --~--~-~--~~~---~--~~ 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: derivative bug in Sage 4.0 symbolics?
Hi Burcin:
When using Sage for my work i makes heavy use of dictionaries to
substitute values for derivatives of symbolic functions. Thanks for
your help on fixing this bug for Sage 4.1.1.
Alex
On Jun 8, 7:12 am, Burcin Erocal bur...@erocal.org wrote:
Hi Alex,
On Sun, 7 Jun 2009 11:31:26 -0700 (PDT)
Alex Raichev tortoise.s...@gmail.com wrote:
Hi all:
Upon upgrading to Sage 4.0, i can no longer make a dictionary with
derivatives as keys (see below). Can someone please fix this?
--
| Sage Version 4.0, Release Date: 2009-05-29 |
| Type notebook() for the GUI, and license() for information. |
--
sage: X= var('x,y')
sage: f= function('f',*X); f
f(x, y)
sage: for x in X:
: diff(f,x)
:
D[0](f)(x, y)
D[1](f)(x, y)
sage: d= {}
sage: for x in X:
: d[diff(f,x)] = 1
:
snip
/Applications/sage/local/lib/python2.5/site-packages/sage/rings/
complex_interval_field.pyc in __call__(self, x, im)
286
287 try:
-- 288 return x._complex_mpfi_( self )
289 except AttributeError:
290 pass
/Applications/sage/local/lib/python2.5/site-packages/sage/symbolic/
expression.so in sage.symbolic.expression.Expression._complex_mpfi_
(sage/symbolic/expression.cpp:5484)()
snip
/Applications/sage/local/lib/python2.5/site-packages/sage/symbolic/
expression_conversions.pyc in derivative(self, ex, operator)
344 NotImplementedError: derivative
345
-- 346 raise NotImplementedError, derivative
347
348 def arithmetic(self, ex, operator):
NotImplementedError: derivative
I opened a ticket for this:
http://trac.sagemath.org/sage_trac/ticket/6243
As I wrote on the ticket, I believe the correct fix is to change pynac
to handle more general numerical approximations. I will try to get this
done until the next release.
There might be an easier fix by implementing the derivative method in
sage.symbolic.expression_conversions.Converter. Maybe Mike can comment
on that.
Thanks.
Burcin
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[sage-support] Re: Is it possible to replace the list built-in type in Sage?
[ x ] No, I can read the above just fine. It is crystal clear. ... but of course unnecessarily verbose. In my opinion a more common notation in Sage: sage: x=2*vector(range(10))+vector(10*[3]) sage: list_plot(map(lambda a:[cos(a),sin(a)],x/max(x))) is superior to Mathematica. On Tue, Jul 14, 2009 at 6:35 PM, William Stein wrote: 2009/7/14 Carlos Córdoba ccordob...@gmail.com: Thanks John, I'd seen Python comprehensions before, but since I was trying to do all in a one-liner, I think I overlooked your elegant and simple solution. One comprehension at a time is quite neat, but several is just unreadable. That could be a function of familiarity. Quick poll -- Do you find the following just unreadable? x = [1,2,3] y = [2*a for a in x] z = [b + 3 for b in y] w = [a/max(z) for a in z] v = [[cos(a), sin(a)] for a in w] ANSWER: [ ] Yes, the above is just unreadable. [ ] No, I can read the above just fine. It is crystal clear. -- 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: Is it possible to replace the list built-in type in Sage?
[ x ] No, I can read the above just fine. It is crystal clear. ... but of course unnecessarily verbose. In my opinion a more common notation in Sage: sage: x=2*vector(range(10))+vector(10*[3]) sage: list_plot(map(lambda a:[cos(a),sin(a)],x/max(x))) is superior to Mathematica. On Tue, Jul 14, 2009 at 6:35 PM, William Stein wrote: 2009/7/14 Carlos Córdoba ccordob...@gmail.com: Thanks John, I'd seen Python comprehensions before, but since I was trying to do all in a one-liner, I think I overlooked your elegant and simple solution. One comprehension at a time is quite neat, but several is just unreadable. That could be a function of familiarity. Quick poll -- Do you find the following just unreadable? x = [1,2,3] y = [2*a for a in x] z = [b + 3 for b in y] w = [a/max(z) for a in z] v = [[cos(a), sin(a)] for a in w] ANSWER: [ ] Yes, the above is just unreadable. [ ] No, I can read the above just fine. It is crystal clear. -- 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
But how con you get the time of execution in a variable? On Jul 2, 10:33 am, William Stein wst...@gmail.com wrote: On Thu, Jul 2, 2009 at 1:31 PM, pangpablo.ang...@uam.es wrote: Watch also for cputime and walltime, which are very general and easy to use. Sometimes time and timeit are not convenient to use if you have more than one statement. One nice trick: If you're in the notebook and you put %time as the first line of a notebook cell, then the entire block of code is timed. 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 -~--~~~~--~~--~--~---
