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2024-01-11 03:20:57 +0200 | commented answer | Tutorial example matrix multiplication Merci Emmanuel pour vos précisons! C'est bien expliqué! Pat |
2024-01-10 18:40:38 +0200 | answered a question | Tutorial example matrix multiplication Thanks Max, So the answer is: A*w is well defined because the vector w assumes the column form to complete the operat |
2024-01-10 17:33:37 +0200 | asked a question | Tutorial example matrix multiplication Tutorial example matrix multiplication Hi, I'm looking at the tutorial linear algebra: We have sage: A = Matrix([[1,2 |
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2023-11-30 05:58:52 +0200 | answered a question | The method lim() does not return a simple integer Thanks very much John - good catch! |
2023-11-29 04:06:49 +0200 | edited question | The method lim() does not return a simple integer The method lim() does not return a simple integer Hi, I have two cases where I would expect the answer to be a simple |
2023-11-28 23:33:03 +0200 | asked a question | The method lim() does not return a simple integer The method lim() does not return a simple integer Hi, I have two cases where I would expect the answer to be a simple |
2023-11-13 05:06:05 +0200 | edited answer | Cannot index an array - causing key error , context astropy.io Un gros MERCI Ricardo. That is a great fix! It worked in a context of a more subtle nature: I had to declare an index e |
2023-11-13 05:05:39 +0200 | answered a question | Cannot index an array - causing key error , context astropy.io Un gros MERCI Ricardo. That is a great fix! It worked in a context of a more subtle nature: I had to declare an index e |
2023-11-10 20:31:42 +0200 | asked a question | Cannot index an array - causing key error , context astropy.io Cannot index an array - causing key error , context astropy.io There seems to be a problem indexing the object class 'as |
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2023-09-13 04:44:24 +0200 | answered a question | import astropy in a sage notebook v Un gros merci Ricardo! The sage pip install worked - for python2.7. Yes, I should be ashamed to use this 4 year old sag |
2023-09-12 19:12:56 +0200 | asked a question | import astropy in a sage notebook v import astropy in a sage notebook v Hi Sagesse! I'm wondering if there's an easy way to get a sage notebook (v8.7) to i |
2023-03-15 23:24:03 +0200 | commented answer | solving 2 non-linear functions (max degree of 3) fails Merci encore, il y a toujours un moyen... il faut s'habituer aux objets comme AA, RR,RDF :) |
2023-03-15 04:27:27 +0200 | answered a question | solving 2 non-linear functions (max degree of 3) fails Un gros MERCI Emmanuel! I got the solution I needed for the 3rd part of this piecewise funtion (it agrees with mathema |
2023-03-14 03:09:55 +0200 | edited question | solving 2 non-linear functions (max degree of 3) fails solving 2 non-linear functions (max degree of 3) fails I'm having trouble solving the following: It's a simple system |
2023-03-14 03:09:24 +0200 | edited question | solving 2 non-linear functions (max degree of 3) fails solving 2 non-linear functions (max degree of 3) fails I'm having trouble solving the following: var('k','r','c') r = 0 |
2023-03-14 03:04:25 +0200 | asked a question | solving 2 non-linear functions (max degree of 3) fails solving 2 non-linear functions (max degree of 3) fails I'm having trouble solving the following: var('k','r','c') r = 0 |
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2020-12-26 05:24:45 +0200 | answered a question | Combined 2d plot: how to change the size of the object? Yes, that makes perfect sense! I need to create a reference to this combined object - as you suggested mQ = m+Q allows me to do mQ.set_axes_range(...) Merci Beaucoup! Une réponse le jour même de Noël! |
2020-12-25 21:31:32 +0200 | asked a question | Combined 2d plot: how to change the size of the object? I have created a matrix plot and a line and combined them as follows: Combined graphics is I would like to change the size of Here is an example showing no change when using What method should I use? |
2020-12-05 05:43:20 +0200 | asked a question | How to show lines and images on a chess board (matrix_plot) Hi, I naively created a chess board with a matrix_plot. Shown alone, it looks almost like a chess board, but it has axes and white padding on the periphery I then naively tried to add a line to that plot - Somehow I have lost the whole matrix plot . This is version 8.7 in a jupyter notebook i only get 2 rows - the rest is truncated. Question - how to graph lines on top of this matrix plot without truncating the apprearance? Merci! Pat |
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2019-10-16 21:38:26 +0200 | asked a question | Looking for musical exercises using sage Hi Folks, Has anyone tried to do some harmonic or rythm analysis for musical instruments using sage? Also - how easy is it under ubuntu to produce sounds of these harmonics? Any links will be appreciated. thanks Pat |
2019-10-16 21:35:42 +0200 | answered a question | How to remove PID of defunct notebook server? Hi folks, I tried running notebook(require_login=False) .... which produced an error and probably as a side-effect deleted the "lock" file I was looking for with the defunct pid. Then I restarted the notebook() and it works... The terminal message told me: Executing twistd --pidfile="sage_notebook.sagenb/sagenb.pid" -ny "sage_notebook.sagenb/twistedconf.tac" I then checked :~/.sage/sage_notebook.sagenb for sagenb.pid .... this file contained 3800 --- which is the currently running server. So I suspect that if I get this problem again, alls I need to do is delete this "lock" file. Eh bien! Pat |
2019-10-16 18:31:47 +0200 | asked a question | How to remove PID of defunct notebook server? Hi Sage users It looks like a system crash left a lock file for a sage notebook server. I cannot run the notebook: Another Sage Notebook server is running, PID 2128. Opening web browser at http://localhost:8080/ ... Does anyone know where this lock file is or what the procedure is to clear up this error? I have no PID 2128 running at the time this error occurs. Hence I think it is some lock file or ressource that needs to be freed or deleted. Thanks Pat |
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2019-02-27 18:38:44 +0200 | commented answer | Looking for stellation of polyhedra Hi Thanks for getting back to me. I'm looking to create various nets of stellations of the icosahedron as shown here for example: https://en.wikipedia.org/wiki/Stellat... I discovered this in Wenninger's book Polyhedron Models - number 27 shows the Second Stellation of the icosahedron - very beautiful. Mathworld shows the first stellated form of the isocasehdron the Triakis Icosahedron and provides a net for it http://mathworld.wolfram.com/TriakisI.... Can we do that in sage? Pat |
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2019-02-03 18:45:06 +0200 | asked a question | Looking for stellation of polyhedra Hi Sagists, I'm wondering if anyone knows a way to do stellation with the Polyhedron class? Mathematica has a Stellate function but they admit it is really an augment operation and not a true stellation thanks Pat Browne |
2018-11-17 20:26:25 +0200 | asked a question | integration - StopIntegration support? Is there a way to specify a stopping rule or condition like Here's an example in Mathematica: |
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2017-10-05 22:01:53 +0200 | asked a question | how to get more information on graphics object Hi, I'm plotting arcs, and they're not doing what I want. When I try to examine them the information is hidden behind the message Graphics object consisting of 1 primitive. How do I find out what the arc object contains? thanks ./pat |
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2012-12-13 00:38:11 +0200 | commented question | Plotting and the show() method Hi Folks, I'm curious - I could help do the documentation patch - but not sure if I'm allowed. Once that is done, I'd be happy to "Answer my own question" by citing the documentation, and then we could say the case is closed... So how can I help? |