[sage-support] Re: Memory issues with maxima in SAGE
On Aug 17, 2009, at 2:21 PM, Robert Dodier wrote: > On Aug 17, 12:06 pm, William Stein wrote: > >> My understanding is that one has to modify the maxima source code >> itself and recompile maxima. > > Not so -- EXT:SET-LIMIT can be called anytime after the > Maxima session is launched. > To evaluate a single Lisp expression in Maxima: > > :lisp (...) I didn't know that, very handy! - 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] Re: change a string to sage expression by sage_eval
On Aug 17, 2009, at 3:45 AM, Viny wrote: > > Hello! > > Is it possible to have the equivalent sage expression of the following > string, by using sage_eval() or another function without getting this > error in while the transcription : There was talk a while back about x[1] giving a sub-scripted x, but I don't think anything concrete came of it (IIRC there were bigger symbolic changes going on at the time). What is phi, v, etc. in your context? > > /lib/python2.6/site-packages/sage/misc/sage_eval.py", line 199, in > sage_eval return eval(source, sage.all.__dict__, locals) File > "", line 1, in TypeError: > 'sage.symbolic.expression.Expression' object is unsubscriptable > > A part of the string is: > > [(dx**4*dy**4*E**(2*phi[0, 0])*epsr**2* ((16*ni*(Cxy[0, 0] + (phi[0, > -1] - 2*phi[0, 0] + phi[0, 1])/dy**2 + (phi[-1, 0] - 2*phi[0, 0] + > phi[1, 0])/dx**2 + (ni*(-(E**phi[0, 0]*u[0, 0]) + v[0, 0]/E**phi[0, > 0]))/epsr))/ (E**phi[0, 0]*epsr) + (8*(dx**2 + dy**2)* (dx**2*((-4 + > phi[0, -1] - phi[0, 1])*v[0, -1] + 8*v[0, 0] + (-4 - phi[0, -1] + phi > [0, 1])*v[0, 1]) + dy**2*((-4 + phi[-1, 0] - phi[1, 0])*v[-1, 0] + > 8*v[0, 0] + (-4 - phi[-1, 0] + phi[1, 0])*v[1, 0])))/(dx**4*dy**4) + > ((-4 + phi[0, 0] - phi[0, 2])* (dx**2*((-4 + phi[0, 0] - phi[0, 2])*v > [0, 0] + 8*v[0, 1] + (-4 - phi[0, 0] + phi[0, 2])*v[0, 2]) + dy**2* > ((-4 + phi[-1, 1] - phi[1, 1])*v[-1, 1] + 8*v[0, 1] + (-4 - phi[-1, > 1] + phi[1, 1])*v[1, 1])))/(dx**2*dy**4) + ((-4 + phi[0, 0] - phi[2, > 0])* (dx**2*((-4 + phi[1, -1] - phi[1, 1])*v[1, -1] + 8*v[1, 0] + (-4 > - phi[1, -1] + phi[1, 1])*v[1, 1]) + dy**2*((-4 + phi[0, 0] - phi[2, > 0])*v[0, 0] + 8*v[1, 0] + (-4 - phi[0, 0] + phi[2, 0])*v[2, 0])))/ > (dx**4*dy**2)))/ (2*dx**4*(-8*dy**2*E**phi[0, 0]*epsr*ni*(2 + > dy**2*Cxy[0, 0] + phi[0, -1] - 2*phi[0, 0] + phi[0, 1]) - > 16*dy**4*ni**2*v[0, 0] + E**(2*phi[0, 0])*epsr**2*((-4 + phi[0, 0] - > phi[0, 2])*v[0, 0] + 4*v[0, 1] + (-phi[0, 0] + phi[0, 2])*v[0, 2])) > + dx**2*dy**2*E**phi[0, 0]*epsr*(-16*dy**2*ni*(2 + phi[-1, 0] - 2*phi > [0, 0] + phi[1, 0]) + E**phi[0, 0]*epsr*((-4 + phi[-1, 1] - phi[1, > 1])* v[-1, 1] + 8*v[0, 1] + (-4 + phi[1, -1] - phi[1, 1])*v[1, -1] + > 8*v[1, 0] - (8 + phi[-1, 1] + phi[1, -1] - 2*phi[1, 1])*v[1, 1])) + > 2*dy**4*E**(2*phi[0, 0])*epsr**2*((-4 + phi[0, 0] - phi[2, 0])*v[0, 0] > + 4*v[1, 0] + (-phi[0, 0] + phi[2, 0])*v[2, 0])) - (dx**4*dy**4*E** > (2*phi[0, 0])*epsr**2*(64*(dx**(-2) + dy**(-2))**2 + (16*ni**2)/(E** > (2*phi[0, 0])*epsr**2) + (4 - phi[0, 0] + phi[0, 2])**2/ dy**4 + (4 - > phi[0, 0] + phi[2, 0])**2/dx**4)* (-(((ni**2*(16/dx**4 + 16/dy**4 + (u > [0, 0] - u[0, 2])**2/dy**4 + (u[0, 0] - u[2, 0])**2/dx**4 + > (16*ni*(- > (E**phi[0, 0]*u[0, 0]) + v[0, 0]/E**phi[0, 0])*(Cxy[0, 0] + (phi[0, > -1] - 2*phi[0, 0] + phi[0, 1])/dy**2 + (phi[-1, 0] - 2*phi[0, 0] + > phi[1, 0])/dx** 2 + (ni*(-(E**phi[0, 0]*u[0, 0]) + v[0, 0]/E**phi[0, > 0]))/ epsr))/epsr + 16*(2/dx**2 + 2/dy**2 + (E**phi[0, 0]*ni*u[0, 0] > + (ni*v[0, 0])/E**phi[0, 0])/epsr)**2 + (v[0, 0] - v[0, 2])**2/ > dy**4 + (v[0, 0] - v[2, 0])**2/dx**4))/(4*epsr**2) + ((2*dx**4* > (8*dy**2*E**phi[0, 0]*epsr*ni*(2 - phi[0, -1] + 2*phi[0, 0] - phi[0, > 1]) + 8*dy**4*E**phi[0, 0]*ni*(-(epsr*Cxy[0, 0]) + 2* E**phi[0, 0] > *ni*u[0, 0]) + epsr**2*((4 + phi[0, 0] - phi[0, 2])* u[0, 0] - 4*u[0, > 1] + (-phi[0, 0] + phi[0, 2])*u[0, 2])) + dx**2*dy**2*epsr* > (16*dy**2*E**phi[0, 0]*ni*(2 - phi[-1, 0] + 2* phi[0, 0] - phi[1, 0]) > + epsr*((4 + phi[-1, 1] - phi[1, 1])* u[-1, 1] - 8*u[0, 1] + (4 + phi > [1, -1] - phi[1, 1])* u[1, -1] - 8*u[1, 0] - (phi[-1, 1] + phi[1, -1] > - 2*(4 + phi[1, 1]))*u[1, 1])) + 2*dy**4*epsr**2* ((4 + phi[0, 0] - > phi[2, 0])*u[0, 0] - 4*u[1, 0] + (-phi[0, 0] + phi[2, 0])*u[2, 0]))* > (2*dx**4*(-8*dy**2*E**phi[0, 0]*epsr*ni*(2 + dy**2*Cxy[0, 0] + phi > [0, -1] - 2*phi[0, 0] + phi[0, 1]) - 16*dy**4*ni**2*v[0, 0] + E** > (2*phi[0, 0])*epsr**2*((-4 + phi[0, 0] - phi[0, 2])*v[0, 0] + 4* v[0, > 1] + (-phi[0, 0] + phi[0, 2])*v[0, 2])) + dx**2*dy**2*E**phi[0, 0] > *epsr*(-16*dy**2*ni*(2 + phi[-1, 0] - 2* phi[0, 0] + phi[1, 0]) + > E**phi[0, 0]*epsr* ((-4 + phi[-1, 1] - phi[1, 1])*v[-1, 1] + 8*v[0, 1] > + (-4 + phi[1, -1] - phi[1, 1])*v[1, -1] + 8*v[1, 0] - (8 + phi[-1, > 1] + phi[1, -1] - 2*phi[1, 1])*v[1, 1])) + 2*dy**4*E**(2*phi[0, 0]) > *epsr**2*((-4 + phi[0, 0] - phi[2, 0])* v[0, 0] + 4*v[1, 0] + (-phi[0, > 0] + phi[2, 0])*v[2, 0])))/ (64*dx**8*dy**8*E**(2*phi[0, 0])*epsr**4)) > * -8*(dx**2 + dy**2)*(dx**2*((4 + phi[0, -1] - phi[0, 1])*u[0, -1] > - 8*u[0, 0] + (4 - phi[0, -1] + phi[0, 1])*u[0, 1]) + dy**2*((4 + > phi[-1, 0] - phi[1, 0])*u[-1, 0] - 8*u[0, 0] + (4 - phi[-1, 0] + phi > [1, 0])*u[1, 0])))/(dx**4*dy**4) + ((4 + phi[0, 0] - phi[0, 2])* > (dx**2* > ((4 + phi[0, 0] - phi[0, 2])* u[0, 0] - 8*u[0, 1] + (4 - phi[0, 0] + > phi[0, 2])*u[0, 2]) + dy**2*((4 + phi[-1, 1] - phi[1, 1])*u[-1, 1] - > 8*u[0, 1] + (4 - phi[-1, 1] + phi[1, 1])*u[1, 1])))/(d
[sage-support] Re: Load Maxima
Hi Mikie,
On Tue, Aug 18, 2009 at 7:16 AM, Mikie wrote:
>
> How do I load Maxima? I using a Python script.
If you want to access the Sage library from your Python script, you
need to run that script using the version of Python that comes with
Sage. The command "sage -python /path/to/my/python/script.py" should
do the trick. To access the functionalities of Maxima from that
script, you can pass all Maxima commands to the function maxima(). For
example, say I have a Python script as follows and Sage is in my PATH:
[mv...@sage mvngu]$ which sage
/usr/local/bin/sage
[mv...@sage mvngu]$ pwd
/scratch/mvngu
[mv...@sage mvngu]$ cat demo.py
from sage.all import *
print maxima("2 + 3;")
I would then run the Python script "demo.py" as follows:
[mv...@sage mvngu]$ sage -python demo.py
5
and the answer 5 is the output of the version of Maxima that's bundled
with Sage.
--
Regards
Minh Van Nguyen
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[sage-support] Re: can't run *.sage scripts from command line
Hi Oscar, On Tue, Aug 18, 2009 at 3:39 AM, Oscar Lazo wrote: > Hello, > > I've compiled sage 4.1.1, and it seems to work nicely. However, I can't run > *.sage scripts from the command line. > > I've made a file named test.sage with the following content: > > print "Hello World" > print 8^3 > > and run "sage test.sage" > > and get the following error: > 'import site' failed; use -v for traceback > Traceback (most recent call last): > File "demo.py", line 2, in > from sage.all_cmdline import * # import sage library > ImportError: No module named sage.all_cmdline This is strange indeed. Say my current directory is this [mv...@sage mvngu]$ pwd /scratch/mvngu and I have installed Sage locally: [mv...@sage mvngu]$ cd build/sage-4.1.1/ [mv...@sage sage-4.1.1]$ pwd /scratch/mvngu/build/sage-4.1.1 [mv...@sage sage-4.1.1]$ cd ../.. I have a Sage script "test.sage" with the following content as above: [mv...@sage mvngu]$ cat test.sage print "Hello World" print 8^3 Then I would run that script with my local Sage installation: [mv...@sage mvngu]$ build/sage-4.1.1/sage test.sage Hello World 512 As a guess, I think you have put the location of Sage in your PATH or you have installed Sage system-wide. -- Regards Minh Van Nguyen --~--~-~--~~~---~--~~ 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] Can I control the location of the axes? My x-axis sometimes shows up in the middle...
If you look at my list_plot at http://imgur.com/OHorX.png you will notice that the x-axis is in the middle of the graph for some reason. This is confusing, because it makes it look as though some values are negative, when they really aren't (y goes from 8 to 15). Options such as xmin or ymin don't help. Is there any way to fix this? Thanks! Philip --~--~-~--~~~---~--~~ 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] can sage support natural textbook display?
like this picture http://edu.casio.com/products/adves/fx82esplus/images/closeup_fx82esplus.jpg --~--~-~--~~~---~--~~ 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: can sage support natural textbook display?
Hi, On Tue, Aug 18, 2009 at 12:09 PM, zasdfg wrote: > > like this picture > http://edu.casio.com/products/adves/fx82esplus/images/closeup_fx82esplus.jpg You mean something like this? http://sage.math.washington.edu/home/mvngu/doc/screenshots/sage-notebook.png -- Regards Minh Van Nguyen --~--~-~--~~~---~--~~ 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: Can I control the location of the axes? My x-axis sometimes shows up in the middle...
Philip Brocoum wrote: > If you look at my list_plot at http://imgur.com/OHorX.png you will > notice that the x-axis is in the middle of the graph for some reason. > This is confusing, because it makes it look as though some values are > negative, when they really aren't (y goes from 8 to 15). Options such > as xmin or ymin don't help. > > Is there any way to fix this? I am almost done with an extensive modification of the plotting code that uses the new matplotlib and fixes this problem. I think it will be done before the end of the week. I just have to finish implementing the gridline functionality using calls to matplotlib instead of all the custom code that we use. The philosophy I've taken with these modifications is that axes in the center of the picture should *only* cross at the origin. If your plot is entirely contained in the upper right quadrant, then you will see axes on the left and the bottom. If your graph is entirely contained in the lower right quadrant, then you will see axes on the left and the top. If your graph covers the xrange (1,5) and the yrange (-3,3), then you will see the y-axis on the left, and the x-axis will cut through the middle of your graph. Essentially, any axis line that cuts through your graph is actually the axis (i.e., x or y = 0). Any other time, the axis is on the side of the graph that it should be intuitively, given the quadrant your picture is in. It would be easy to add functionality to allow a user to specify an axis intersection coordinate, but for now, I am just implementing the current functionality. I'm also making it trivial to get the matplotlib object out of a Sage Graphic(), so you can use the extensive and very nice tools in matplotlib to post-process graphs. Thanks, Jason --~--~-~--~~~---~--~~ 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] Title a Digraph
I now how to name a graph with 'g.name("name")'. But is there a way
to display the name when you display the graph? ie. as a title above
or below the graph. I can't seem to find a command or any example
where this is done.
So something like...
show(g,display_name=True)
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[sage-support] sage notebook worksheets lost content
Hi I just checked back at my workbooks on www.sagenb.org and found most of my workbooks have had their content replaced with a single "e" character. Does anyone know how I can recover my workbooks? Blair --~--~-~--~~~---~--~~ 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: sage notebook worksheets lost content
There might be a better way to do this, but here is one way: In a cell of your worksheet, do: %sh ls -t ../../snapshots |head which will give you a list of the most recent snapshots of your worksheets. For my worksheet, the most recent one was called: 1250606636.bz2. So then you can do: %sh cp ../../snapshots/1250606636.bz2 . and you will get a link to that compressed worksheet snapshot. You could then unpack it, and then paste it in after clicking "Edit" in the notebook. That's a little tedious if you have lots of worksheets lost in this way - it might be possible to restore all of them with a script, but I'm not sure exactly how to do that on sagenb.org. -Marshall Hampton On Aug 18, 9:26 am, bsdz wrote: > Hi > > I just checked back at my workbooks onwww.sagenb.organd found most > of my workbooks have had their content replaced with a single "e" > character. > > Does anyone know how I can recover my workbooks? > > Blair --~--~-~--~~~---~--~~ 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: Title a Digraph
On Tue, Aug 18, 2009 at 7:10 AM, docfleetwood wrote:
>
> I now how to name a graph with 'g.name("name")'. But is there a way
> to display the name when you display the graph? ie. as a title above
> or below the graph. I can't seem to find a command or any example
> where this is done.
>
> So something like...
>
> show(g,display_name=True)
That sounds like a great feature. You should implement it and post a patch.
William
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[sage-support] Re: Error while installing sage 4.1.1 on server for multi users.
Hi, On Tue, Aug 18, 2009 at 1:41 AM, mrotsliah wrote: > > I followed the instructions for System-wide install found here > > http://www.sagemath.org/doc/installation/source.html#installation-in-a-multiuser-environment > > When I log on to the server, I try to run sage, and I see the output > below. There is no folder /home/bob/.sage/ipython. Hitting RETURN at > the end of the code outputs hundreds of lines stuff. > > How would I fix this problem? Thanks. > > $.: sage > -- > | Sage Version 4.1.1, Release Date: 2009-08-14 | > | Type notebook() for the GUI, and license() for information.| > -- > cp: cannot stat `/home/bob/.sage/ipython': Permission denied > Traceback (most recent call last): > File "/usr/local/sage-4.1.1/local/bin/sage-cleaner", line 28, in > >os.makedirs(tmp) > File "/usr/local/sage-4.1.1/local/lib/python/os.py", line 150, in > makedirs >makedirs(head, mode) > File "/usr/local/sage-4.1.1/local/lib/python/os.py", line 157, in > makedirs >mkdir(name, mode) > OSError: [Errno 13] Permission denied: '/home/bob/.sage//temp' > ** > Welcome to IPython. I will try to create a personal configuration > directory > where you can customize many aspects of IPython's functionality in: > > /home/bob/.sage/ipython > Initializing from configuration /usr/local/sage-4.1.1/local/lib/ > python2.6/site-packages/IPython/UserConfig > WARNING: > > There was a problem with the installation: > [Errno 13] Permission denied: '/home/bob/.sage/ipython' > Try to correct it or contact the developers if you think it's a bug. > IPython will proceed with builtin defaults. > Please press to start IPython. Hmm... the error looks suspicious. What operating system are you using? Which Linux distribution? The instructions at http://www.sagemath.org/doc/installation/source.html#installation-in-a-multiuser-environment worked fine for me under Ubuntu 9.04. -- Regards Minh Van Nguyen --~--~-~--~~~---~--~~ 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: can sage support natural textbook display?
On Tue, Aug 18, 2009 at 3:51 AM, Minh Nguyen wrote: > > Hi, > > On Tue, Aug 18, 2009 at 12:09 PM, zasdfg wrote: >> >> like this picture >> http://edu.casio.com/products/adves/fx82esplus/images/closeup_fx82esplus.jpg > > You mean something like this? > > http://sage.math.washington.edu/home/mvngu/doc/screenshots/sage-notebook.png > > -- Note that Minh clicked the "typeset" checkbox in the top middle of the screen. 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: Error while installing sage 4.1.1 on server for multi users.
Hi! On 17 Aug., 17:41, mrotsliah wrote: > I followed the instructions for System-wide install found here > > http://www.sagemath.org/doc/installation/source.html#installation-in-... > > When I log on to the server, I try to run sage, and I see the output > below. There is no folder /home/bob/.sage/ipython. Hitting RETURN at > the end of the code outputs hundreds of lines stuff. > > How would I fix this problem? Thanks. > > $.: sage > -- > | Sage Version 4.1.1, Release Date: 2009-08-14 | > | Type notebook() for the GUI, and license() for information. | > -- > cp: cannot stat `/home/bob/.sage/ipython': Permission denied ... If I am not mistaken, /home/bob/.sage/ipython is a folder that should normally be generated once the user "bob" starts sage for the first time. It contains certain data that bob creates in his Sage sessions, both including permanent data that remain even after upgrading Sage, and temporary data that are deleted when Sage is terminated. And apparently you have no write permission in bob's home directory, which is indeed strange -- because either you are bob, hence, shoud have write permission in your home, or you are not bob, and so why would Sage try to write in his home directory on your behalf? Best regards, Simon --~--~-~--~~~---~--~~ 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: Error while installing sage 4.1.1 on server for multi users.
Oops: On 18 Aug., 22:04, Simon King wrote: > If I am not mistaken, /home/bob/.sage/ipython is a folder ... I mean, /home/bob/.sage is that folder, and its sub-folder ipython is one example for the permanent data it contains. --~--~-~--~~~---~--~~ 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: Title a Digraph
William Stein wrote:
> On Tue, Aug 18, 2009 at 7:10 AM, docfleetwood wrote:
>> I now how to name a graph with 'g.name("name")'. But is there a way
>> to display the name when you display the graph? ie. as a title above
>> or below the graph. I can't seem to find a command or any example
>> where this is done.
>>
>> So something like...
>>
>> show(g,display_name=True)
>
> That sounds like a great feature. You should implement it and post a patch..
This sounds great. I think
show(g,title=True)
or
show(g,title="My text")
would be a nice interface. If title=True, then the object's natural
title (e.g., the graph name) is used. Otherwise, the text string is used.
Jason
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[sage-support] Re: Load Maxima
Yes, that works.
However, I am trying to create a function that has Maxima functions in
it and I can't seem to pass values to it. I am using a Python
function.
Something like this
---
def Subs(x,y):
y1=maxima("float(x);");y1
maxima("p1:y1;");print maxima("p1;")
a1=maxima("s3:x*y;");
return a1
-
Is it possible to pass the variables into Maxima function?
On Aug 18, 5:30 am, Minh Nguyen wrote:
> Hi Mikie,
>
> On Tue, Aug 18, 2009 at 7:16 AM, Mikie wrote:
>
> > How do I load Maxima? I using a Python script.
>
> If you want to access the Sage library from your Python script, you
> need to run that script using the version of Python that comes with
> Sage. The command "sage -python /path/to/my/python/script.py" should
> do the trick. To access the functionalities of Maxima from that
> script, you can pass all Maxima commands to the function maxima(). For
> example, say I have a Python script as follows and Sage is in my PATH:
>
> [mv...@sage mvngu]$ which sage
> /usr/local/bin/sage
> [mv...@sage mvngu]$ pwd
> /scratch/mvngu
> [mv...@sage mvngu]$ cat demo.py
> from sage.all import *
>
> print maxima("2 + 3;")
>
> I would then run the Python script "demo.py" as follows:
>
> [mv...@sage mvngu]$ sage -python demo.py
> 5
>
> and the answer 5 is the output of the version of Maxima that's bundled
> with Sage.
>
> --
> Regards
> Minh Van Nguyen
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[sage-support] Re: Can I control the location of the axes? My x-axis sometimes shows up in the middle...
Great! That sounds like just the thing :-) --~--~-~--~~~---~--~~ 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: Title a Digraph
Jason Grout wrote:
> William Stein wrote:
>> On Tue, Aug 18, 2009 at 7:10 AM, docfleetwood wrote:
>>> I now how to name a graph with 'g.name("name")'. But is there a way
>>> to display the name when you display the graph? ie. as a title above
>>> or below the graph. I can't seem to find a command or any example
>>> where this is done.
>>>
>>> So something like...
>>>
>>> show(g,display_name=True)
>> That sounds like a great feature. You should implement it and post a patch..
>
>
> This sounds great. I think
>
> show(g,title=True)
>
> or
>
> show(g,title="My text")
>
> would be a nice interface. If title=True, then the object's natural
> title (e.g., the graph name) is used. Otherwise, the text string is used.
>
docfleetwood: if you don't get to this before me, I'll try to add this
to my overhaul of the plotting code. If title=True, I'll use g.name()
(if defined) as the title. If g.name() is not defined, I'll use
g.__custom_name, which is what you assign when you do g.rename('some
text').
In fact, maybe the graph code ought to set the __custom_name attribute,
to be consistent with the rest of Sage, instead of using _backend.name.
What do you think, Robert/anyone else interested?
Jason
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[sage-support] Re: Load Maxima
On Tue, Aug 18, 2009 at 2:30 PM, Mikie wrote:
>
> Yes, that works.
> However, I am trying to create a function that has Maxima functions in
> it and I can't seem to pass values to it. I am using a Python
> function.
>
> Something like this
> ---
> def Subs(x,y):
> y1=maxima("float(x);");y1
> maxima("p1:y1;");print maxima("p1;")
> a1=maxima("s3:x*y;");
> return a1
> -
> Is it possible to pass the variables into Maxima function?
If you do
maxima.eval("foo")
it is exactly like typing foo at the command line in Maxima. You can
do anything with that. E.g., above do
maxima.eval("p1:y1")
to set p1 to y1 in maxima.
William
>
>
> On Aug 18, 5:30 am, Minh Nguyen wrote:
>> Hi Mikie,
>>
>> On Tue, Aug 18, 2009 at 7:16 AM, Mikie wrote:
>>
>> > How do I load Maxima? I using a Python script.
>>
>> If you want to access the Sage library from your Python script, you
>> need to run that script using the version of Python that comes with
>> Sage. The command "sage -python /path/to/my/python/script.py" should
>> do the trick. To access the functionalities of Maxima from that
>> script, you can pass all Maxima commands to the function maxima(). For
>> example, say I have a Python script as follows and Sage is in my PATH:
>>
>> [mv...@sage mvngu]$ which sage
>> /usr/local/bin/sage
>> [mv...@sage mvngu]$ pwd
>> /scratch/mvngu
>> [mv...@sage mvngu]$ cat demo.py
>> from sage.all import *
>>
>> print maxima("2 + 3;")
>>
>> I would then run the Python script "demo.py" as follows:
>>
>> [mv...@sage mvngu]$ sage -python demo.py
>> 5
>>
>> and the answer 5 is the output of the version of Maxima that's bundled
>> with Sage.
>>
>> --
>> Regards
>> Minh Van Nguyen
> >
>
--
William Stein
Associate Professor of Mathematics
University of Washington
http://wstein.org
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[sage-support] Re: Load Maxima
Hi William, hi Mikie,
On 19 Aug., 01:27, William Stein wrote:
> On Tue, Aug 18, 2009 at 2:30 PM, Mikie wrote:
>
> > Yes, that works.
> > However, I am trying to create a function that has Maxima functions in
> > it and I can't seem to pass values to it. I am using a Python
> > function.
>
> > Something like this
> > ---
> > def Subs(x,y):
> > y1=maxima("float(x);");y1
> > maxima("p1:y1;");print maxima("p1;")
> > a1=maxima("s3:x*y;");
> > return a1
> > -
> > Is it possible to pass the variables into Maxima function?
>
> If you do
>
> maxima.eval("foo")
>
> it is exactly like typing foo at the command line in Maxima. You can
> do anything with that. E.g., above do
>
> maxima.eval("p1:y1")
I am not sure if this is what Mikie had in mind. It seems like he
wants a python function that has an argument x, and he wants to pass
*this argument* (not just the string 'x') to maxima.
Certainly I am not a maxima expert. But extrapolating from other
interfaces, you could try to transform the argument x into maxima by
xm = maxima(x)
Of course, it depends both on the input and on the quality of the
maxima interface whether this transformation works. In bad cases, you
need to pre-process x before passing it to maxima.
If you want to do computations with the maxima version xm of x, you
could do it in a python way
xm.method_name(arguments)
or you could directly talk with maxima, by passing strings, as William
explained above. Note that xm is known to maxima by the name xm.name
().
So, again extrapolating from other interfaces, I think youcould do
maxima.eval('p1:%s'%(xm.name()))
whatever this means.
Cheers,
Simon
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[sage-support] Re: Title a Digraph
Well I'm glad I could help by coming up with a good idea. I've got
lots of questions so maybe a few other ideas might pop up too :-)
I would love to help but I know absolutely nothing about programming.
In fact, playing with Sage has pretty much been my introduction to
programming. I teach high school biology and would like my kids to
work with some more mathematics. I'm also part of a national
biomathematics program that is trying to write curriculum for the high
school level to get younger folks interested and ahead of the game. I
work with a team of high school and college math and biology teachers
and researchers. Biology is becoming such an information science! As
part of that, I have taken it upon myself to investigate Sage for
possible inclusion in some of our modules. The students could start
an account and work through some preset presentations and then inquire
and investigate on their own. I think it would be great for them and
they would learn some programming too (much as I am now).
So when William says, "You" should implement it and post a patch, "I"
would have no idea even where to begin. So he clearly means "you -
Jason" and not "me" :-) So rest assured that I won't get to it
before you. Not that I wouldn't be willing and/or don't appreciate
what you all have done and the help you all have given me with my
questions so far. William made my life MUCH easier already with his
suggestions in other posts. If there is some other way I can help,
I'd be happy to lend a hand.
Tom
On Aug 18, 7:11 pm, Jason Grout wrote:
> Jason Grout wrote:
> > William Stein wrote:
> >> On Tue, Aug 18, 2009 at 7:10 AM, docfleetwood
> >> wrote:
> >>> I now how to name a graph with 'g.name("name")'. But is there a way
> >>> to display the name when you display the graph? ie. as a title above
> >>> or below the graph. I can't seem to find a command or any example
> >>> where this is done.
>
> >>> So something like...
>
> >>> show(g,display_name=True)
> >> That sounds like a great feature. You should implement it and post a
> >> patch..
>
> > This sounds great. I think
>
> > show(g,title=True)
>
> > or
>
> > show(g,title="My text")
>
> > would be a nice interface. If title=True, then the object's natural
> > title (e.g., the graph name) is used. Otherwise, the text string is used.
>
> docfleetwood: if you don't get to this before me, I'll try to add this
> to my overhaul of the plotting code. If title=True, I'll use g.name()
> (if defined) as the title. If g.name() is not defined, I'll use
> g.__custom_name, which is what you assign when you do g.rename('some
> text').
>
> In fact, maybe the graph code ought to set the __custom_name attribute,
> to be consistent with the rest of Sage, instead of using _backend.name.
> What do you think, Robert/anyone else interested?
>
> Jason
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[sage-support] Re: Title a Digraph
Hi Tom, On Wed, Aug 19, 2009 at 10:11 AM, docfleetwood wrote: > > Well I'm glad I could help by coming up with a good idea. I've got > lots of questions so maybe a few other ideas might pop up too :-) > > I would love to help but I know absolutely nothing about programming. > In fact, playing with Sage has pretty much been my introduction to > programming. I teach high school biology and would like my kids to > work with some more mathematics. I'm also part of a national > biomathematics program that is trying to write curriculum for the high > school level to get younger folks interested and ahead of the game. I > work with a team of high school and college math and biology teachers > and researchers. Biology is becoming such an information science! As > part of that, I have taken it upon myself to investigate Sage for > possible inclusion in some of our modules. The students could start > an account and work through some preset presentations and then inquire > and investigate on their own. I think it would be great for them and > they would learn some programming too (much as I am now). In that case, you might be glad to know that Marshall Hampton is updating Biopython as an optional package of Sage. Biopython is a Python package for research and study in bioinformatics. Its website is http://biopython.org/wiki/Main_Page and the ticket to update Biopython in Sage is http://trac.sagemath.org/sage_trac/ticket/6634 -- Regards Minh Van Nguyen --~--~-~--~~~---~--~~ 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: Title a Digraph
Very cool - thanks for the info. A nice teaser. When is Sage 5.0 coming out :-) On Aug 18, 8:19 pm, Minh Nguyen wrote: > Hi Tom, > > > > On Wed, Aug 19, 2009 at 10:11 AM, docfleetwood wrote: > > > Well I'm glad I could help by coming up with a good idea. I've got > > lots of questions so maybe a few other ideas might pop up too :-) > > > I would love to help but I know absolutely nothing about programming. > > In fact, playing with Sage has pretty much been my introduction to > > programming. I teach high school biology and would like my kids to > > work with some more mathematics. I'm also part of a national > > biomathematics program that is trying to write curriculum for the high > > school level to get younger folks interested and ahead of the game. I > > work with a team of high school and college math and biology teachers > > and researchers. Biology is becoming such an information science! As > > part of that, I have taken it upon myself to investigate Sage for > > possible inclusion in some of our modules. The students could start > > an account and work through some preset presentations and then inquire > > and investigate on their own. I think it would be great for them and > > they would learn some programming too (much as I am now). > > In that case, you might be glad to know that Marshall Hampton is > updating Biopython as an optional package of Sage. Biopython is a > Python package for research and study in bioinformatics. Its website > is > > http://biopython.org/wiki/Main_Page > > and the ticket to update Biopython in Sage is > > http://trac.sagemath.org/sage_trac/ticket/6634 > > -- > Regards > Minh Van Nguyen --~--~-~--~~~---~--~~ 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: Title a Digraph
docfleetwood wrote: > Very cool - thanks for the info. A nice teaser. When is Sage 5.0 > coming out :-) > Well, as always, "implement it and send a patch" :). -Jason --~--~-~--~~~---~--~~ 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 -~--~~~~--~~--~--~---
