Skip to main content

Still on cython

After classes in the morning, my afternoon was spent trying to understand why my codes were running so slow. I knew that i was doing twice the number of function evaluations while estimating the integral of a function numerically but even after i used the correct weights in the trapezoid rule, my code was running slow. I tried cython and it was bit better, but not so much that it made any difference to me. Doubtful that working on an ipython notebook might be a hinderence, I learnt how to build cython codes and use them a libraries in python code, instead of running them on the ipython notebook using the %load_ext cython and %%cython magic functions that I was using until this point. It was a bit better than when I was running the code on the ipython notebook but it still hung up on me after a point. But one thing is for sure, the numerical estimates of error seem way more rational and similar to that I get from C when I ran the cython code than when I ran the python version of the same code. Errors in the python version were all over the place. Otherwise, I did a bit more cleanup of my github repositories and checked if there was anything from before that I hadn't written about or if there was anything that I could zip up and throw into my archive folders instead of using up github space. Having just completed an assignment, well almost all of it, I shall embark upon my journey of the internet. God speed...

Popular posts from this blog

Animation using GNUPlot

Animation using GNUPlotI've been trying to create an animation depicting a quasar spectrum moving across the 5 SDSS pass bands with respect to redshift. It is important to visualise what emission lines are moving in and out of bands to be able to understand the color-redshift plots and the changes in it.
I've tried doing this using the animate function in matplotlib, python but i wasn't able to make it work - meaning i worked on it for a couple of days and then i gave up, not having found solutions for my problems on the internet.
And then i came across this site, where the gunn-peterson trough and the lyman alpha forest have been depicted - in a beautiful manner. And this got me interested in using js and d3 to do the animations and make it dynamic - using sliders etc.
In the meanwhile, i thought i'd look up and see if there was a way to create animations in gnuplot and whoopdedoo, what do i find but nirvana!

In the image, you see 5 static curves and one dynam…

on MOOCs.

For those of you who don't know, MOOC stands for Massively Open Online Course.

The internet is an awesome thing. It's making education free for all. Well, mostly free. But it's surprising at the width and depth of courses being offered online. And it looks like they are also having an impact on students, especially those from universities that are not top ranked. Students in all parts of the world can now get a first class education experience, thanks to courses offered by Stanford, MIT, Caltech, etc.

I'm talking about MOOCs because one of my new year resolutions is to take online courses, atleast 2 per semester (6 months). And I've chosen the following two courses on edX - Analyzing Big Data with Microsoft R Server and Data Science Essentials for now. I looked at courses on Coursera but I couldn't find any which was worthy and free. There are a lot more MOOC providers out there but let's start here. And I feel like the two courses are relevant to where I …

On programmers.

I just watched this brilliant keynote today. It's a commentary on Programmers and the software development industry/ecosystem as a whole.



I am not going to give you a tl;dr version of the talk because it is a talk that I believe everyone should watch, that everyone should learn from. Instead, I am going to give my own parallel-ish views on programmers and programming.
As pointed out in the talk, there are mythical creatures in the software development industry who are revered as gods. Guido Van Rossum, the creator of Python, was given the title Benevolent Dictator For Life (BDFL). People flock around the creators of popular languages or libraries. They are god-like to most programmers and are treated like gods. By which, I mean to say, we assume they don't have flaws. That they are infallible. That they are perfect.
And alongside this belief in the infallibility of these Gods, we believe that they were born programmers. That programming is something that people are born wit…