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20140629 03:14:58 +0200  marked best answer  Can sage tweet? How can I tell sage to make a twitter post? 
20140629 03:14:56 +0200  marked best answer  read from serial port I'm trying to get sagemath to read from my USB port which has an arduino attached to it. The arduino is throwing a bunch of text to the serial port with address /dev/ttyUSB0 A preliminary Google search reveals that there is a python library pySerial which is designed to do just this. Can I make sagemath recognize this library somehow? Thanks! 
20140629 03:14:56 +0200  marked best answer  specify resolution of saved graphic I can save a graphic I have created as a svg using the following command:
However, my particular graphic is saved as a 39.5MB file, which is too large for my graphic editor to handle well. Saving as .ps creates a 20.4MB file. In the end, I want a .png, but with particular printed dimensions and resolution. So:

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20130608 16:24:38 +0200  commented question  Error intersecting polyhedra Perhaps it is because these polyhedra are degenerate? 
20130608 16:22:26 +0200  commented question  Error intersecting polyhedra OK. So, I've lost that original code which produced this error. However, I have noticed some new strange behavior when intersecting polyhedra and can give you specifics: a = Polyhedron([[1.0, 0.0, 0.7071067812], [0.5, 0.5, 0.0]]) b = Polyhedron([[0.5,0.5,0.0]]) c = Polyhedron([[0.0, 1.0, 0.7071067812], [0.5, 0.5, 0.0], [0.5, 0.5, 0.0]]). a & b is empty, while (a & b) & c is 0dimensional. 
20130606 21:50:29 +0200  commented question  Error intersecting polyhedra Right. Sorry. Each poly[i] is a polyhedron defined as a convex hull on some of the points from b. 
20130606 21:40:15 +0200  commented question  Error intersecting polyhedra @kcrisman OK. I included a definition of b. It's a dictionary containing the coordinates of the barycentric subdivision of a 3simplex. 
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20130606 17:13:30 +0200  asked a question  Error intersecting polyhedra I have a dictionary of polyhedra which I want to consider various intersections and unions of. For now, my dictionary has four polyhedra in it. When running the following for loop: I get a very nasty error: (The traceback for the error is quite long. I can include it if needed.) Manually computing gives the same error. HOWEVER, if instead I compute I get no errors. While this is a fine workaround for this particular case, I'm scripting these intersections and need some way to actually compute these intersections automatically. Using something like doesn't help either. Any thoughts? 
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20120409 22:57:46 +0200  asked a question  What do these messages after a crash indicate? I was recently running a script I wrote to triangulate a polygon, and after a few hours sage crashed. I was left with the following messages: What happened? What do these messages indicate? 
20120405 14:29:07 +0200  commented answer  How to triangulate polygon with sage? I will look at that algorithm. Thanks. 
20120405 11:41:30 +0200  commented answer  How to triangulate polygon with sage? Thanks for the suggestion. Unfortunately, I am working in a setting where taking the convex hull of the vertices of my polygon is not what I want to do. (My polygons have holes in them.) 
20120405 01:56:02 +0200  asked a question  How to triangulate polygon with sage? If I feed sage a list of vertices, then the polygon() function can create a 2D polygon determined by visiting these edges in order (with selfintersections, repeated edges, holes, etc.). Does sage have a builtin method to triangulate the resulting polygon? (It appears to me as though this is not the case.) If not, I would love to see your homemade code to do this. 
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20120327 12:34:13 +0200  marked best answer  Variable parameter range in parametric_plot3d? Try this: In general, if you want And here's a more complicated example: The rectangular plot: Change coordinates to plot only a part of the t range: 
20120327 12:34:09 +0200  commented answer  Variable parameter range in parametric_plot3d? Thanks, Niles. I'm kicking myself now. 
20120326 23:20:20 +0200  asked a question  Variable parameter range in parametric_plot3d? Is it possible to give parametric_plot3d parameter ranges where one parameter is a function of the other? For example, I would like the following command to execute and create a plot of a triangle in $\mathbb{R}^3$. Thanks! 
20111204 18:06:05 +0200  answered a question  How to populate face_list without using show()? I figured it out. The .triangulate() function does exactly this. 
20111204 17:58:58 +0200  asked a question  How to populate face_list without using show()? Is there a way to populate the face_list attribute of the result of parametric_plot3d without showing the plot itself? I am running a script to generate a lot of these surfaces, and I am not interested in closing the jmol window for each surface. Thanks! 