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2014-06-29 03:14:24 +0200 | marked best answer | How do instantiate a new class properly? BackgroundI have created a new class The code works. I should mention that I'm editing
everything seems to work. Now, I created a module in which I would like to define specific graphs, with specific labeling of the vertices and edges, as well as plot positioning information. Shouldn't I be able to import the module
When I do this, the methods for QuestionHow do I structure the modules and classes so that I can instantiate the class properly? |
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2013-05-12 19:42:56 +0200 | marked best answer | Why does graph minor not work with multiple edges? I would say that if you split all edges of both graph by adding adding a new vertex b joined to a and c where there was an edge from a to c (this is a way to transform a graph with multiple edges into a normal graph), then checking that one is a minor of the other would give you the good definition. I expect it to be slower, though. And the explanation to your question "why aren't multiple edges considered by the Nathann |
2013-05-12 19:42:50 +0200 | commented answer | Why does graph minor not work with multiple edges? Yeah. I had already done that, but it was too slow. Thank you, though. |
2013-05-11 21:30:09 +0200 | asked a question | Why does graph minor not work with multiple edges? When $H$ has multiple edges, and we ask whether it is a minor of another graph $G$, using the method: the multiple edges are ignored. As a result, it can return Here is a small example of this incorrect behavior. Let $H$ be a triangle with a double edge, and let $G$ be a square. Clearly, $H$ is not a minor of $G$. The output is: Is there a work-around? |
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2011-07-14 19:51:46 +0200 | marked best answer | How do I display the full output that includes graphics? Try writing your output to an html file. Do something like: That file should appear as a link in the output of the cell. If you click on the link, you should see your output as an html file. |
2011-07-14 19:49:51 +0200 | marked best answer | Upgrade sage: build from sources? I have never build sage from source. It is useful only if you plan on working on the development of sage or modify the source code. Your notebooks are not stored in sage directory but home. So you can just delete the present version, download sage 4.7 and install the binaries. That should work for most users. |
2011-07-13 18:16:37 +0200 | asked a question | Upgrade sage: build from sources? I'm using an older version of Sage (4.5.3) in Ubuntu 10.04. I like it, but I'd like to upgrade to a more recent version. From the command prompt, calling throws a scary warning at me: Question: Is there really a significant advantage to building the binaries from source? I am running a Sony Vaio laptop on 4 2.13 GHz Intel cores. (I can specify more stats if it helps somebody to give me good advice.) |
2011-03-30 21:36:28 +0200 | commented question | subsets with condition You can create a set out of a list L with S = set(L). It will eliminate duplicates, and ignore the order. (You see the set elements sorted.) The set S has methods that impliment various set-theoretic operations. Type S.<tab> to see possibilities, such as S.intersect(T) which returns a the intersection of sets S and T. |
2011-03-30 20:59:24 +0200 | asked a question | How do I display the full output that includes graphics? BackgroundI am working in the notebook GUI. I have code that produces graphics ( The QuestionHow do I see my graphical arrays? |
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2011-03-21 16:59:31 +0200 | commented answer | Why does graph plotting crop so aggressively, and what is a work-around? Thanks. I wasn't using the keyword `axes_pad` explicitly, but rather trying to hack the `graph_plot.py` module. This works. |
2011-03-21 16:57:57 +0200 | marked best answer | Why does graph plotting crop so aggressively, and what is a work-around? Try this: |
2011-03-21 16:57:42 +0200 | commented question | Why does graph plotting crop so aggressively, and what is a work-around? @benjaminfjones: I am using 4.5.3. Perhaps it's time for an upgrade. :) |
2011-03-21 14:00:06 +0200 | asked a question | Why does graph plotting crop so aggressively, and what is a work-around? Surely, the Sage community is aware of this bug. For example, there is this ticket, in which the problem is supposed to be fixed. But it's not! A patch is described: in
Am I to change this value in order to fix this over-zealous cropping behavior? No matter what I do, in this regard, I still end up with graph vertices partially cut off. What's the easy work-around? I would like to be able to plot |
2011-03-21 03:32:25 +0200 | commented answer | How do instantiate a new class properly? Thanks, Felix. I should have mentioned that I was still having problems even when I renamed it `feynman.py`. I was just trying to mimic the style built into the various Sage (python) modules. |
2011-03-21 03:30:20 +0200 | marked best answer | How do instantiate a new class properly? Instead of " |
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