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Gnuplot: increasing readability of plots

Friday, September 23, 2011 Posted by

Gnuplot is a great way to plot your data. It is very powerful, easily attached to all your analysis tools and scripts and provides publication-ready vector output (or to any other thinkable printer, image format, character device etc.). It’s just not always that easy to find the correct commands to do what you want. Read the rest of this entry »

Rotating a file: converting row data to column data

Tuesday, September 13, 2011 Posted by

Say you have a file with data line-by-line, but you want it to be column-by-column, like this:

                1 a
1 2 3 4         2 b        
a b c d   -->   3 c
                4 d

So behaviour becomes similar to Matlab’s rot90 or transpose function, rotating the file 90 degrees counterclockwise*. This stuff may be of interest if we want to plot columns (like, for every digit plot its corresponding letter). Here’s how it’s done: Read the rest of this entry »

Gas en stroom, maar waar betaal ik voor?

Sunday, September 11, 2011 Posted by

Enige tijd geleden schreef ik een artikel over Bezopen Drinkwaterprijzen in Nederland, deze keer neem ik de energiesector op de korrel.
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IEEE802.11 implementation in MiXiM

Friday, September 9, 2011 Posted by

In some of my simulation studies I use (a modified) Mac80211 implementation as present in MiXiM for OMNeT++. Sometimes it is sensible to represent 1k+ lines of code in a figure. Read the rest of this entry »

Matlab and libc.so on 64-bit Linux

Wednesday, August 31, 2011 Posted by

I had Matlab R2009b running on Kubuntu Lucid Lynx (10.10), no problem. I do a dist-upgrade to Natty Narwhal (11.04) and Matlab complains:

~/matlab/bin/util/oscheck.sh: 619: /lib64/libc.so.6: not found Read the rest of this entry »