Gary Ruben just asked me if it was possible to retrieve the triangulation information from my previous Delaunay example. Actually the reason I came up with this example is that Emanuelle Gouillart, my partner[*], needed to do Delaunay triangulation on some data. She was kind enough to extract that code …
Tonight I sat down and played a bit with VTK’s Delaunay tessalation filter. I wanted to inspect the local structure of a graph created by Delaunay tessalation of random points. To see better the structure, I selected a slab of the resulting unstructured grid. I think the image is …
For those who don’t know, sys.path is the path that the Python interpreter traverse at each module import to look for the module file imported.
This blog post is about the consequences of having a long sys.path. I’ll try and make it short, but I would …
Prabhu and I can’t decide: what is best for the documentation, have more pages, and thus have them be small, or have longer pages, but have less. Two specific examples:
http://code.enthought.com/projects/mayavi/docs/development/html/mayavi/examples.html
http://code.enthought.com/projects/mayavi/docs …
Ondrej Certik has installed a sage notebook on a server opened to the net, with Mayavi installed on it. The result is that you have a command line interface on the web, in which you can enter Mayavi commands, and see the result. You have to be very careful to …
I have been wanting to change slightly the design of a Mayavi dialog for a while. Here is the issue: when you create a visualization, eg throught the command line in IPython, whith mlab, you get a nice and small window with only your visualization, and a toolbar. If you …
I couldn’t help myself, this Franck-Willison quote is brilliant:
“And the Europeans accept chaos and know how to live with it. I came away from France believing in the strong faith of the French people, not because of their magnificent cathedrals, but because I saw them drive around L …
There is an error in a code example in my article that just came out in Linux Magazine France. I am so ashamed. I did test the code, but I didn’t have automated tests, so I broke it when tweaking it :(. I think the lesson is that you need …
It’s been two weeks since I posted a ‘Mayavi image of the week’. Prabhu has made a really cool example of integrating trajectories in a 3D vector field, using, of course, the Lorenz equation for the 3D field. With nice colors, it makes a new fantastic image:
The green …
The French LinuxMag just published a special edition on Python, in which I authored a 12-page article on scientific computing. The edition is in French, so if you don’t speak French, it is of limited interested.
Ce dossier hors-série est une excellente ressource pour découvrir Python, entre autre par …
The title of this post is a lure: there won’t be a Mayavi image each week, because I would run out quickly. But it sounded cool.
Anyway, here is an image of a graph, visualized with Mayavi. The graph is actually a protein structure, downloaded from the PDB. The …
This may sound stupid, but I have failed to find on the web a simply-accessible text file giving the GPS coordinates for the world’s major cities. The web site World-gazetteer is helpful, but doesn’t really give what I want. So I wrote a small Python web-scraping script to …
When I started working in my new field (data analysis of functional brain images), I was surprised to find in our data-analysis scripts what I thought was a very particular code smell: the numerical code is always doing a lot of filename and path manipulation, loading and saving data even …
Mayavi 3.1.0 has just been released, and I think it is a fantastic version. We are starting to be able to focus on the details and the focus. In addition, we are getting user feedback, which helps identify the pain points.
Automatic scripting
This is a huge deal …
The mayavi manual in SVN has now 120 pages when compiled to pdf. I know that this is a stupid metric, and that the quality is more important then the number of pages, but it does give me a warm and fuzzy feeling.
More seriously, next release of Mayavi (coming …
As promised, here is the sequel to the tutorial I posted yesterday on using Mayavi with scipy to understand the trajectories of a particle in a potential. (chances are you are reading this before my previous post. I suggest you first jump to my previous post, and then come back …
Many years ago, I was working with a bright undergrad on the trajectories of a atoms in a complex light field created by the intersection of two laser beams. She had developped a code in C, and I was starting to discover Python, so we had binded in t in …
Pauli Virtanen and myself have finally finished transfering the numpy documentation editor to http://docs.scipy.org. The documentation editor is a project that has been mainly championed by Pauli. It allows you to edit in a wiki-like fashion the documentation for numpy, including the docstring. The changes are reviewed …
David just blogged a link to an article about careers in higher education. I thought the paragraph on the French system was so much to the point that I would like to quote it entirely here:
In France, the access to a first permanent position as maître de conférences occurs …
This summer has been hectic (life is hectic anyhow!). As I was switching fields from physics to neuro-imaging, I took the chance to travel to the US and to spend the summer doing Python-related stuff.
I spent most of my time this summer at Enthought, in Austin, Texas …
