Short IT recipes

i.e. some stuff and junk about Python, Perl, Matlab, Ruby, Mac X, Linux, Solaris, ...

Friday, October 30, 2009

Comparing two methods of measurement in Matalb or Octave

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How to compare two methods that measure the same variable? How to check if one method produces results constantly higher than the other meth...
Friday, October 23, 2009

Ten clicks to install Ubuntu 9.04

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Update: My honest mistake: It should be Ubuntu 9.10, not 9.04. Thanks Tom! Click 1 Click Enter for English language. Clicks 2 and 3 Go t...
Monday, October 19, 2009

How ImageMagick can save you time

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ImageMagick is a great tool! Many times it has saved me from programming. Here is just one example of many applications of the ImageMagick...
Sunday, October 18, 2009

xampp / lampp: upgrade PHPUnit in lampp 1.7.1

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The default PHPUnit that ships with lampp 1.7.1 is not suited for use with Zend Framework 1.9. The reason is that the PHPUnit version in lam...
Thursday, October 15, 2009

SPSS: create random binary variable

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To create a random binary variable called e.g. new_var one can use the following code: COMPUTE new_var=RND(RV.UNIFORM(0,1)). EXECUTE. or
Wednesday, October 07, 2009

Xampp: SQLSTATE[HY000] [2002] Invalid argument

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I'm currently developing a web application using Zend Framework 1.9.x. For this purpose I used Xampp for linux (i.e. lampp 1.7.2). Most ...
Friday, October 02, 2009

Gnome desktop icons disappear

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I have gnome 2.26.3 and sometimes all my icons on the desktop disappear. I found that in Gnome, program called nautilus manages it. So for ...
Sunday, September 27, 2009

TOP PHP frameworks in terms of number of books published on a given framework

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To begin with, I would like to say that I'm not new to PHP 4 and 5, but I would not call myself an expert. The reason is that for a few ...
Tuesday, September 15, 2009

imagemagick: resize all image files in a current folder

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Example: mogrify -resize 60% *.JPG
Tuesday, September 01, 2009

Arch linux: RGB to CMYK

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To convert RGB files to CMYK files (for printing) one can install Separate+ Gimp plugin. My gimp version was 2.6.6. I downloaded Separate...
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