[sage-support] Bug in show() function?
Hello, list, look please at the worksheet http://alpha.sagenb.org/home/pub/121/
It seems that the output of show(bb) is wrong, there is spurious
factor 1/4 in the second term.
In this worksheet in first cell i typed:
reset()
forget()
var("r,ksi,a3,A")
aa=-r^2*(ksi+a3)+I*sqrt(A)*r
bb=-(ksi+a3)*(r-I*sqrt(A)/(2*(ksi+a3)))^2 + (ksi+a3)*(I*sqrt(A)/(2*(ksi
+a3)))^2
In second cell i typed print(bb), it gave:
-1/4*(2*r - I*sqrt(A)/(a3 + ksi))^2*(a3 + ksi) - 1/4*A/(a3 + ksi)
After it i copied this ouput and pasted it in the show() function,
like this:
show(-1/4*(2*r - I*sqrt(A)/(a3 + ksi))^2*(a3 + ksi) - 1/4*A/(a3 +
ksi))
Outputs of
show(-1/4*(2*r - I*sqrt(A)/(a3 + ksi))^2*(a3 + ksi) - 1/4*A/(a3 +
ksi))
and
show(bb)
are different.
P.S. sorry for my rough english
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[sage-support] Re: Are there people using today any of the three recommended solutions for Windows on the sage site?
I've just joined sage-trac-account, requested an account and will post a new
ticket once I have approval.
As for trellis/lattice packages, this highlights what could be a big problem
with R, as there are literally thousands of different packages, a good few
that create plots. If we create a list of pre-approved methods, this risks
leaving a lot out. (There's some cool kriging stuff I'd like this wrapper to
support.)
I was considering (for my first code-bash this weekend) ignoring loading,
and storing *any* non-defined method call to this object and attempting to
run it in R. It's not secure, but would have the benefit of ensuring that
any loaded graphic function would run successfully as a method.
If it's necessary that we have a list of well-defined methods to the
Rgraphic object, would we be able to escape it using an extra check=False
argument to the __init__ method.
So a typical session with my object would look like:
R.library("a graphics library")
R.library("another graphics library")
graph1 = Rgraphic(., check=False)
graph1.boxplot(...)
graph1.someotherRfunction(..)
graph1.somethingelse(..)
show(graph1)
Still have to sort out how to store the image though. :(
Joal Heagney
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[sage-support] Re: sage not showing any output
On 11 Tháng Tư, 16:42, trust god wrote: > but after that i am not getting any output in sage output,even not an What do you see on the screen ? F.e. 'Sage-notebook' , ... BTW, have you read or downloaded the readme-file at *Sage-site* ? -- 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 URL: http://www.sagemath.org
[sage-support] Re: Bug in show() function?
Hi, Not sure what's going on, but it seems that alpha.sagenb.org is actually currently at an older version than normal sagenb.org , just for your information... -Keshav -- 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 URL: http://www.sagemath.org
[sage-support] Re: installing and working with sage packages
On 20 Tháng Tư, 15:23, kuhn wrote: > I still don't know if I'm working online or "chez moi", or if I can > transfer files from Windows to > wmware > > Is there somewhere where I could find quickly this elementary > stuff? Yes, look at http://www.howtogeek.com/howto/ubuntu/how-to-share-folders-with-your-ubuntu-virtual-machine-guest/ or search for 'vmware shared folder' on web Tip: 1. Also search for 'ubuntu nautilus' . 2. You can use f.e. Win-Notepad to edit short .sage-files but must be careful about encoding when saving and should put '#' as the last char in the file (I mean no newlineafter it). 3. Here is an example of attach : In *Win*, write in a Sage-Notebook cell : attach "/mnt/hgfs/my_shared_folder/aa.sage" aa.sage is a Win-file. my_shared_folder is the name you gave to the VMWare add-shared-folder wizard. Now, click inside the cell and 'evaluate' appears below the cell, click it to get the file executed. Edit the file again and repeat the clicking above. For some reason, the file may be executed twice. 4. You should also read https://groups.google.com/group/sage-support/browse_thread/thread/9410295b66d28693?hl=vi -- 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 URL: http://www.sagemath.org
[sage-support] Re: Are there people using today any of the three recommended solutions for Windows on the sage site?
On Apr 27, 5:29 am, ancienthart wrote:
> I've just joined sage-trac-account, requested an account and will post a new
> ticket once I have approval.
>
> As for trellis/lattice packages, this highlights what could be a big problem
> with R, as there are literally thousands of different packages, a good few
> that create plots. If we create a list of pre-approved methods, this risks
> leaving a lot out. (There's some cool kriging stuff I'd like this wrapper to
> support.)
Very true. And of course we can't assume anyone in general will have
these installed, so neither could we require them.
> I was considering (for my first code-bash this weekend) ignoring loading,
> and storing *any* non-defined method call to this object and attempting to
> run it in R. It's not secure, but would have the benefit of ensuring that
> any loaded graphic function would run successfully as a method.
> If it's necessary that we have a list of well-defined methods to the
> Rgraphic object, would we be able to escape it using an extra check=False
> argument to the __init__ method.
That is a good idea - I mean the first one, though the second one is
worth thinking about too.
> So a typical session with my object would look like:
>
> R.library("a graphics library")
> R.library("another graphics library")
>
> graph1 = Rgraphic(., check=False)
> graph1.boxplot(...)
> graph1.someotherRfunction(..)
> graph1.somethingelse(..)
> show(graph1)
>
> Still have to sort out how to store the image though. :(
There *is* a ticket for that open :)
Let's move this discussion to the ticket you open, once you open it,
though.
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Re: [sage-support] Difficulties with Sage installation on ubuntu 10.04 lts
Ok I tried without success ,below there is the ouput of the try,could you make other suggestions,thanks: sage -f mpir atlas Force installing mpir atlas Calling sage-spkg on mpir Warning: Attempted to overwrite SAGE_ROOT environment variable mpir Machine: Linux peigneux-desktop 2.6.32-31-generic #61-Ubuntu SMP Fri Apr 8 18:24:35 UTC 2011 i686 GNU/Linux Deleting directories from past builds of previous/current versions of mpir Extracting package /home/peigneux/Bureau/Sage/sage-4.6.2-linux-32bit-ubuntu_10.04_lts-i686-Linux-i686-Linux/spkg/standard/mpir-1.2.2.p2.spkg ... -rw-r--r-- 1 peigneux peigneux 107 2011-03-04 14:20 /home/peigneux/Bureau/Sage/sage-4.6.2-linux-32bit-ubuntu_10.04_lts-i686-Linux-i686-Linux/spkg/standard/mpir-1.2.2.p2.spkg tar: Ceci ne ressemble pas à une archive de type « tar » tar: Arrêt avec code d'échec à cause des erreurs précédentes Finished extraction sage: After decompressing the directory mpir does not exist This means that the corresponding .spkg needs to be downloaded again. Searching for latest version of mpir Found package mpir-1.2.2.p2 http://www.sagemath.org//packages/optional/mpir-1.2.2.p2.spkg --> mpir-1.2.2.p2.spkg [ ] http://www.sagemath.org//packages/standard/mpir-1.2.2.p2.spkg --> mpir-1.2.2.p2.spkg [..] /home/peigneux/Bureau/Sage/sage-4.6.2-linux-32bit-ubuntu_10.04_lts-i686-Linux-i686-Linux/spkg/build Host system uname -a: Linux peigneux-desktop 2.6.32-31-generic #61-Ubuntu SMP Fri Apr 8 18:24:35 UTC 2011 i686 GNU/Linux CC Version gcc -v Using built-in specs. Target: i486-linux-gnu Configured with: ../src/configure -v --with-pkgversion='Ubuntu 4.4.3-4ubuntu5' --with-bugurl=file:///usr/share/doc/gcc-4.4/README.Bugs --enable-languages=c,c++,fortran,objc,obj-c++ --prefix=/usr --enable-shared --enable-multiarch --enable-linker-build-id --with-system-zlib --libexecdir=/usr/lib --without-included-gettext --enable-threads=posix --with-gxx-include-dir=/usr/include/c++/4.4 --program-suffix=-4.4 --enable-nls --enable-clocale=gnu --enable-libstdcxx-debug --enable-plugin --enable-objc-gc --enable-targets=all --disable-werror --with-arch-32=i486 --with-tune=generic --enable-checking=release --build=i486-linux-gnu --host=i486-linux-gnu --target=i486-linux-gnu Thread model: posix gcc version 4.4.3 (Ubuntu 4.4.3-4ubuntu5) checking build system type... k7-pc-linux-gnu checking host system type... k7-pc-linux-gnu checking for a BSD-compatible install... /usr/bin/install -c checking whether build environment is sane... yes checking for gawk... gawk checking whether make sets $(MAKE)... yes checking whether to enable maintainer-specific portions of Makefiles... no checking ABI=32 checking compiler gcc -m32 -O2 -fomit-frame-pointer ... no, long long reliability test 1 checking compiler gcc -O2 -fomit-frame-pointer ... no, long long reliability test 1 configure: error: could not find a working compiler, see config.log for details Failed to configure. real0m5.366s user0m3.212s sys 0m1.532s sage: An error occurred while installing mpir-1.2.2.p2 Please email sage-devel http://groups.google.com/group/sage-devel explaining the problem and send the relevant part of of /home/peigneux/Bureau/Sage/sage-4.6.2-linux-32bit-ubuntu_10.04_lts-i686-Linux-i686-Linux/install.log. Describe your computer, operating system, etc. If you want to try to fix the problem yourself, *don't* just cd to /home/peigneux/Bureau/Sage/sage-4.6.2-linux-32bit-ubuntu_10.04_lts-i686-Linux-i686-Linux/spkg/build/mpir-1.2.2.p2 and type 'make check' or whatever is appropriate. Instead, the following commands setup all environment variables correctly and load a subshell for you to debug the error: (cd '/home/peigneux/Bureau/Sage/sage-4.6.2-linux-32bit-ubuntu_10.04_lts-i686-Linux-i686-Linux/spkg/build/mpir-1.2.2.p2' && '/home/peigneux/Bureau/Sage/sage-4.6.2-linux-32bit-ubuntu_10.04_lts-i686-Linux-i686-Linux/sage' -sh) When you are done debugging, you can type "exit" to leave the subshell. Calling sage-spkg on atlas Warning: Attempted to overwrite SAGE_ROOT environment variable atlas Machine: Linux peigneux-desktop 2.6.32-31-generic #61-Ubuntu SMP Fri Apr 8 18:24:35 UTC 2011 i686 GNU/Linux Deleting directories from past builds of previous/current versions of atlas Extracting package /home/peigneux/Bureau/Sage/sage-4.6.2-linux-32bit-ubuntu_10.04_lts-i686-Linux-i686-Linux/spkg/standard/atlas-3.8.3.p16.spkg ... -rw-r--r-- 1 peigneux peigneux 107 2011-03-04 14:20 /home/peigneux/Bureau/Sage/sage-4.6.2-linux-32bit-ubuntu_10.04_lts-i686-Linux-i686-Linux/spkg/standard/atlas-3.8.3.p16.spkg tar: Ceci ne ressemble pas à une archive de type « tar » tar: Arrêt avec code d'échec à cause des erreurs précédentes Finished extraction sage: After decompressing the director
Re: [sage-support] Difficulties with Sage installation on ubuntu 10.04 lts
On 27 April 2011 13:46, jean-pierre.peigneux wrote: > Ok I tried without success ,below there is the ouput of the try,could > you make other suggestions,thanks: To me it seems your Fortran compiler is not functioning properly. It would help if you configured your system to show error messages in English. > sage -f mpir atlas > cd > /home/peigneux/Bureau/Sage/sage-4.6.2-linux-32bit-ubuntu_10.04_lts-i686-Linux-i686-Linux/spkg/build/atlas-3.8.3.p16/ATLAS-build > ; ./xprobe_comp -v 0 -o atlconf.txt -O 1 -A 20 -Si nof77 0 -Fa ic '-fPIC' > -Fa sm '-fPIC' -Fa dm '-fPIC' -Fa sk '-fPIC' -Fa dk '-fPIC' -Fa xc '-fPIC' -C > if > '/home/peigneux/Bureau/Sage/sage-4.6.2-linux-32bit-ubuntu_10.04_lts-i686-Linux-i686-Linux/local/bin/sage_fortran' > -Fa if '-fPIC' -b 32 > config1.out > :0: internal compiler error: Instruction non permise > Please submit a full bug report, > with preprocessed source if appropriate. > See for instructions. > make[2]: *** [IRunF77Comp] Erreur 1 That certainly indicates a compiler issue. > > > Unable to find usable compiler for F77; abortingMake sure compilers are > in your path, and specify good compilers to configure Your initial problem with Sage's "prereq" script had an issue with your Fortran compiler. William suggested you basically ignored that and tried to install ATLAS. But that generates an internal compiler error. I believe others have built Sage with Ubuntu 10.10, so I think it's safe to say there's a problem with your setup, and not with Sage. Since your C compiler appears to be working, I would suggest your build GCC with C, C++ and Fortran support. GCC 4.5.2 would be a good choice - do NOT use gcc 4.6.0. I don't know about others, but I can't think of anything else. Have you been building lots of programs as root? That increases the chances of you messing up your system. I believe your system is messed up in some way. Dave Dave -- 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 URL: http://www.sagemath.org
Re: [sage-support] Difficulties with Sage installation on ubuntu 10.04 lts
On 27 April 2011 17:20, David Kirkby wrote: > I believe others have built Sage with Ubuntu 10.10, so I think it's > safe to say there's a problem with your setup, and not with Sage. Sorry, I mean ?I believe,others have built Sage with Ubuntu 10.04 - I myself have built it with Ubuntu 10.10. Dave -- 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 URL: http://www.sagemath.org
[sage-support] Re: Anyone have experience of running Sage Notebook on Kindle 3 web browser?
I just tried it and it works quite nice. Only annoying part is that numbers and parenthesis are not on the keyboard, so you have to navigate with arrows to select them then typing. The actual webpage rending is fine. I did plotting. Even graph editor works but there is no way to move the mouse in smaller chunks that predefined jumps, so its unusable. Ask me if you want to know about anything in particular. -- 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 URL: http://www.sagemath.org
Re: [sage-support] Re: Anyone have experience of running Sage Notebook on Kindle 3 web browser?
On Wed, Apr 27, 2011 at 8:37 PM, Rado wrote: > I just tried it and it works quite nice. Only annoying part is that numbers > and parenthesis are not on the keyboard, so you have to navigate with arrows > to select them then typing. The actual webpage rending is fine. I did > plotting. Even graph editor works but there is no way to move the mouse in > smaller chunks that predefined jumps, so its unusable. > Ask me if you want to know about anything in particular. thanks for checking, that's quite good news. And how about sliders in interact? Is there way to manipulate them? Andrzej. -- 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 URL: http://www.sagemath.org
[sage-support] Re: Anyone have experience of running Sage Notebook on Kindle 3 web browser?
On 4/27/11 1:37 PM, Rado wrote: I just tried it and it works quite nice. Only annoying part is that numbers and parenthesis are not on the keyboard, so you have to navigate with arrows to select them then typing. The actual webpage rending is fine. I did plotting. Even graph editor works but there is no way to move the mouse in smaller chunks that predefined jumps, so its unusable. If you press hold down Alt and press the letters on the top row, you'll get numbers without having to use the sym key, IIRC. 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 URL: http://www.sagemath.org
[sage-support] 2d plot functions: thickness - How thick the line is
Hello, My question about the thickness attribute for 2d plot functions. Could somebody explain to me: 1) what does "thickness - How thick the line is" mean? this is somewhat ambiguous to me. Could somebody elaborate to me what this means (e.g. thickness = 2 or thickness = 0.2) 2) My guess is that whether a picture of a plot is relative to its width and height so if I were plotting on the unit square, I won't see a line or a circle with thickness = .002 Is this correct? Any help/clarification is appreciated. Thanks, Clinton -- 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 URL: http://www.sagemath.org
[sage-support] Re: 2d plot functions: thickness - How thick the line is
On 4/27/11 10:10 PM, clinton bowen wrote: Hello, My question about the thickness attribute for 2d plot functions. Could somebody explain to me: 1) what does "thickness - How thick the line is" mean? this is somewhat ambiguous to me. Could somebody elaborate to me what this means (e.g. thickness = 2 or thickness = 0.2) 2) My guess is that whether a picture of a plot is relative to its width and height so if I were plotting on the unit square, I won't see a line or a circle with thickness = .002 Is this correct? Thickness is the thickness of the line measured in points (1/72 of an inch). The thickness does not depend on the scale of the graph; a line of thickness 2 points will always appear to be the same width visually, no matter the scale of the graph. You can think of the thickness as the size of the pen used to draw the line. In Sage, we try to make a distinction between "thickness" (which is independent of the scale of the graph) and "width" (which is measured in data coordinates, so is dependent on the scale of the graph). Hopefully we've been consistent in our use of the terminology. Does that help? 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 URL: http://www.sagemath.org
[sage-support] Re: 2d plot functions: thickness - How thick the line is
On Apr 27, 11:10 pm, clinton bowen wrote: > Hello, > > My question about the thickness attribute for 2d plot functions. > Could somebody explain to me: > 1) what does "thickness - How thick the line is" mean? this is > somewhat ambiguous to me. Could somebody elaborate to me what this > means (e.g. thickness = 2 or thickness = 0.2) I think this is passed to matplotlib, so their docs would be relevant. If you look at sage: sage.plot.line.Line?? you'll discover that we are using set_linewidth, which is "set_linewidth(w) Set the line width in points ACCEPTS: float value in points" so points is the unit. (By the way, that this is where the doc lives is not obvious; we try to hide this a little from the typical end user, because mpl allows too much customization for the casual plotter.) > 2) My guess is that whether a picture of a plot is relative to its > width and height so if I were plotting on the unit square, I won't > see a line or a circle with thickness = .002 Is this correct? You can try it yourself. The default plot is in the side 2 box centered at the origin, and sage: plot(sin(x),thickness=.0002) sage: plot(sin(x),thickness=.2) sage: plot(sin(x),thickness=.02) sage: plot(sin(x),thickness=.2) only the last one shows up, just barely, on my computer. I suppose if you made the image MUCH larger it might. Please let us know if this doesn't answer your question, though! - kcrisman -- 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 URL: http://www.sagemath.org
