[sage-support] Some experiences

2010-04-07 Thread Rolandb
Hi, some experiences. I moved from Vista 32 to Windows 7 64 during Easter. I have a Q6700 PC. Three issues are maybe of general interest. 1) Virtualbox 4.3.4: A clumsy environment so I switched back to (the new) VMware player 3.01 and (the old) Sage 4.1. Now I was positively surprised how cool

[sage-support] Re: groebner fan with

2010-04-07 Thread Andrea Gobbi
This is the part in sage, f1,f2,f3 are 3 polynomials and I have to reduce them by I, the ideal in the line 8. This ideal is a vanishing ideal of some points. R = GF(3)['x1,x2,x3,x4']; R.x1,x2,x3 = PolynomialRing(GF(3), order='degrevlex') x1,x2,x3 = R.gens(); f1=-x1^3+x1^2*x3-x1^2+x1*x3-x1;

Re: [sage-support] Some experiences

2010-04-07 Thread Robert Bradshaw
On Apr 6, 2010, at 11:22 PM, Rolandb wrote: Hi, some experiences. I moved from Vista 32 to Windows 7 64 during Easter. I have a Q6700 PC. Three issues are maybe of general interest. 1) Virtualbox 4.3.4: A clumsy environment so I switched back to (the new) VMware player 3.01 and (the old)

[sage-support] Re: Can't solve equation with square roots...

2010-04-07 Thread Danread5
Hi all, Thanks so much for your help- and so quickly too! I realise it is a very straight forward problem- I am very new to Sage, and am working through some basic school-level problems to get used to the functions before I start using it for my work. Thank you once more! Dan -- To post to

[sage-support] problems with sage and brian simulator

2010-04-07 Thread Uri
I'm having some problems trying to use a program called Brian Simulator (www.briansimulator.org) through Sage. This program is written in Python an can be used as a python package (I've tried it and I had no problem). However, when I try to use it in Sage I get some problems involving units, which

Re: [sage-support] problems with sage and brian simulator

2010-04-07 Thread Robert Bradshaw
On Apr 7, 2010, at 2:10 AM, Uri wrote: I'm having some problems trying to use a program called Brian Simulator (www.briansimulator.org) through Sage. This program is written in Python an can be used as a python package (I've tried it and I had no problem). However, when I try to use it in Sage

[sage-support] Re: problems with sage and brian simulator

2010-04-07 Thread Uri
Thanks a lot, it worked!! :) On 7 Abr, 11:38, Robert Bradshaw rober...@math.washington.edu wrote: On Apr 7, 2010, at 2:10 AM, Uri wrote: I'm having some problems trying to use a program called Brian Simulator (www.briansimulator.org) through Sage. This program is written in Python an

[sage-support] animate/@interact parametric curves

2010-04-07 Thread Dana Ernst
Is there an easy way to animate (or use an @interact for) parametric curves? In particular, I'd like to emphasize to my students the starting and ending points of the curve, as well as the direction. Any tips would be greatly appreciated. Thanks! Dana Ernst, Ph.D. Assistant Professor

[sage-support] Re: animate/@interact parametric curves

2010-04-07 Thread Jason Grout
On 04/07/2010 06:57 AM, Dana Ernst wrote: Is there an easy way to animate (or use an @interact for) parametric curves? In particular, I'd like to emphasize to my students the starting and ending points of the curve, as well as the direction. Any tips would be greatly appreciated. Thanks!

Re: [sage-support] Re: animate/@interact parametric curves

2010-04-07 Thread Dana Ernst
Jason Grout wrote: On 04/07/2010 06:57 AM, Dana Ernst wrote: Is there an easy way to animate (or use an @interact for) parametric curves? In particular, I'd like to emphasize to my students the starting and ending points of the curve, as well as the direction. Any tips would be greatly

[sage-support] @interact input matrix

2010-04-07 Thread Pablo W.
Hi, Right now I use the excellent @interact feature to allow users input a lot of parameters. As they often represent coefficient of matrices to be used in the cell (numpy matrices), I was wondering whether it was possible to input them directly as a matrix. Best, Pablo -- To post to this

[sage-support] standard deviations in sage

2010-04-07 Thread Kenneth A. Ribet
Hello All, I asked myself how I could use sage to compute the standard deviation of a grade distribution for one of my courses. Rooting around, I found that I can compute for example sage: vector(RDF,[1,2,2,1]).standard_deviation() and get the answer 0.57735026919. However, if I try the

Re: [sage-support] standard deviations in sage

2010-04-07 Thread Robert Bradshaw
On Apr 7, 2010, at 9:29 AM, Kenneth A. Ribet wrote: Hello All, I asked myself how I could use sage to compute the standard deviation of a grade distribution for one of my courses. Rooting around, I found that I can compute for example sage: vector(RDF,[1,2,2,1]).standard_deviation()

[sage-support] Re: standard deviations in sage

2010-04-07 Thread Marshall Hampton
Hi, Statistics in Sage is improving but a lot needs to be done to make it easy to use. There has been some progress on this front, but to get more advanced functionality you need to use things in scipy/numpy (for example, do: import scipy.stats as stat and then tab-complete stat.[tab] to see a

[sage-support] Re: standard deviations in sage

2010-04-07 Thread Ken Ribet
Thank you for your help responses. I draw from them the lesson is that even beginning users need to learn about the inheritance tree and about the difference between top level and other functions. On the other hand, it's gratifying to know that the strange behavior that I encountered is

[sage-support] Re: standard deviations in sage

2010-04-07 Thread Ken Ribet
Thank you for your helpful responses. I draw from them the lesson that even beginning users need to learn about the inheritance tree and about the difference between top level and other functions. On the other hand, it's gratifying to know that the strange behavior that I encountered is

[sage-support] Re:@interact input matrix

2010-04-07 Thread Pablo Angulo
Is the following enough for your purposes? @interact def _(M=matrix(ZZ,4,4)): ...do something with M... -- 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

[sage-support] Re: standard deviations in sage

2010-04-07 Thread Alec Mihailovs
On Apr 7, 12:56 pm, Marshall Hampton hampto...@gmail.com wrote: with RDF!  I think this is because many operations over RDF get sent to numpy and scipy, and the conversions aren't defined for RR.  This seems like a bug to me. By the way, % also doesn't work with 2 RDFnumbers sage:

[sage-support] Re: @interact input matrix

2010-04-07 Thread Pablo W.
Indeed, this is exactly what I was looking for ! Thank you very much ! On 7 avr, 21:59, Pablo Angulo pablo.ang...@uam.es wrote: Is the following enough for your purposes? @interact def _(M=matrix(ZZ,4,4)):     ...do something with M... -- To post to this group, send email to

[sage-support] SR + QQbar bug?

2010-04-07 Thread Alex Raichev
Hi all: I ran into an error trying to evaluate the exponential function at an algebraic number. Looks like there's a bug in substituting algebraic numbers for variables; see below. While i was at it, i tried creating the expression QQbar(sqrt(2))*x and got a not implemented error. Wasn't

[sage-support] SR bug?

2010-04-07 Thread Alex Raichev
What the? -- | Sage Version 4.3.5, Release Date: 2010-03-28 | | Type notebook() for the GUI, and license() for information.| --