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2015-07-07 17:59:55 -0600 | asked a question | subgroup of number field unit group I would like to be able to create subgroups of a unit group generated by given elements. I haven't, thus far, been able to find a way to make this work. The following doesn't work: Can anyone help me find a workaround? (Note: it appears to be a bug, see trac.sagemath.org/ticket/18863, but I'm just looking for a workaround for now.) |

2015-05-28 10:44:37 -0600 | asked a question | How to flatten polynomial rings? It is possible in Sage to create a polynomial ring over a polynomial ring. But Sage stores this as a two-tiered structure that is sometimes inconvenient. I would like to flatten it. For example, creates a polynomial ring in t0, t1, t2, ...., t5 over a polynomial ring in c0, c1, ..., c5. But then fails with "var must be one of the generators of the parent polynomial ring." I would like to `flatten' S so it is simply a single polynomial ring over QQ in 12 variables. You may ask, why don't I just construct a single ring in the first place? In this instance, because I want to create a polynomial ring in c0, ...., cn and t0, ...., tn where n is a variable, and I don't know how to do this (I'd prefer to avoid just making c0, ..., c2n and trying to keep track of which are actually t's). I can imagine other situations where one would like to be able to flatten also. |

2014-06-28 20:12:44 -0600 | marked best answer | publish 3d plots to web? I'd like to post the output of a 3d plot to the web. For example, after plotting a surface, a Jmol output is produced, which my browser renders in the notebook. I'd like this Jmol plot to be output as a file that could be uploaded to a server and embedded in a webpage (where it can still be manipulated with the mouse, etc.). Is there a way to do this? |

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2012-07-18 11:16:18 -0600 | marked best answer | Plotting a latex matrix using text() matplotlib uses its own typsetting system called mathtext by default. I think the problem you are getting is due to mathtext not supporting arrays in math mode? In any case, you can work around this by telling matplotlib to use your system LaTeX instead of mathtext like this: You can look at another example here, it shows you how to change fonts to match the font in your document. |

2012-07-18 11:16:00 -0600 | commented answer | Plotting a latex matrix using text() Thanks! This solved my problem. |

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2012-07-14 02:04:17 -0600 | asked a question | Plotting a latex matrix using text() I would like to plot a latex'd matrix at a location in a 2d plot. I tried this: and various variations to do with the backslashes being escaped or not. But every time I get an error: It appears that matplotlib doesn't want to parse an array or a pmatrix etc. Is there a workaround? |

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2011-05-22 18:17:00 -0600 | commented question | coerce pari type or string to rational function workaround? I've put in a trac ticket at http://trac.sagemath.org/sage_trac/ticket/11368 |

2011-05-22 18:04:29 -0600 | commented question | coerce pari type or string to rational function workaround? Thanks for the answers below. I've got my computation working (yay!), but I'm also going to find out if the bug(s) are known and report them if needed. I suspect this must be a known issue, so I'll add a comment when I've looked into it on the tracking system. Any comments or advice on that is welcome. |

2011-05-22 18:01:25 -0600 | marked best answer | coerce pari type or string to rational function workaround? Here's how I'd get around the problem if I needed it to work Right Now(tm): |

2011-05-22 18:01:15 -0600 | commented answer | coerce pari type or string to rational function workaround? Thanks! Right Now(tm) is exactly what I needed, and this did the trick. |

2011-05-22 18:00:25 -0600 | commented answer | coerce pari type or string to rational function workaround? Thanks! This works, but for some reason it is extremely slow, at least on my machine. |

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2011-05-22 09:12:45 -0600 | marked best answer | publish 3d plots to web? This isn't a complete answer, but may get you or someone else started, depending on how hard you want to work: As far as I can tell, there are basically two things you need to be able to do to display the output on a separate page. First, figure out how to load the JMol application on that page. I think this involves finding and loading a bunch of javascript files, and is probably described on the JMol Website. Second, figure out how to find the data file Sage produces to be plotted with JMol, and also load that into your webpage. To that end, I would suggest looking at the source code for your notebook page, and search for some lines like the following (I'd suggest searching for "jmol?" on the page): The path specified is relative to the location of your sage notebook files. This is printed right after you start the notebook server -- the default is " Once you've found the relevant data file and copied it somewhere your page can load it, you might be finished by just using something like the Good luck, and please let us know if you make some progress on this, or find out a better way to do it! ## Update:I just noticed that if you try to plot something from the command line, sage opens up a JMol java applet which has useful options and menus like |

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2011-05-22 09:11:39 -0600 | asked a question | coerce pari type or string to rational function workaround? I am getting some rational functions from pari/gp and want to work with them in Sage. I can't figure out how to do the coercion. I tried coercing them directly, and even via a string. Here's what I've tried: Make a pari type rational function: This is the field I want to put it in: coercing directly doesn't work: So I tried making a string out of it: Of course, sage would accept that string if I typed it in directly: But it won't accept it as a string: All of this works fine for polynomials (just remove the denominator of y from the example above). I think these are bugs and I will report them as such, if you agree. But in the meantime, does anyone have a workaround I can use? |

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