Monthly Archives: October 2012

Tkinter missing dependency

Posted on October 31, 2012 by Thomas Cokelaer

Under Fedora 17, I did an import of Tkinter package but got this error in a python shell: Traceback (most recent call last): File "slider-demo-1.py", line 1, in <module> from Tkinter import * File "/usr/lib/python2.7/lib-tk/Tkinter.py", line 39, in <module> import … Continue reading →

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Bioconductor: first installation

Posted on October 28, 2012 by Thomas Cokelaer

Bioconductor is a website that gathers open source software for bioinformatics in the R language. You can install a Bioconductor package using their interface. As an example, let us install the RBGL package. First, start a R session, and then … Continue reading →

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Installing JPype to use Java from Python

Posted on October 26, 2012 by Thomas Cokelaer

JPype is a Python package that allows you to call Java from Python. First, download the zip file (I got version 0.5.4.2). I will use a virtual environment here, so the syntax is simply: cd /home/user/Downloads # path where the … Continue reading →

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How to get processor information (linux)

Posted on October 17, 2012 by Thomas Cokelaer

Simply type cat /proc/cpuinfocat /proc/cpuinfo You can also try cat /proc/meminfocat /proc/meminfo

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Fedora 17: post installation

Posted on October 15, 2012 by Thomas Cokelaer

Fedora 16 crashed after an update. Good time for a fresh installation of Fedora 17. The installation process provides most of the basic tools (browser, editor…) but some favorites are missing… Here is what I did for the post installation … Continue reading →

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Upgrading R and rpy2

Posted on October 9, 2012 by Thomas Cokelaer

When upgrading R version, you must recompile rpy2. Let us take a case study based on the upgrade of R2.15 to R2.15.1. First, you need to download the source from the main page http://www.r-project.org/ Once downloaded, get the source tar … Continue reading →

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PyQt4: example of TableWidget usage

Posted on October 1, 2012 by Thomas Cokelaer

The following simple example (inspired by saltycrane example shows how to build a simple application that pops up a table with PyQt4 and its TableWidget class. import sys from PyQt4.QtCore import * from PyQt4.QtGui import *   data = {’col1′:[’1′,’2′,’3’], … Continue reading →

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