Virtual environement (Photo credit: wikipedia)
To isolate python developments, I use virtualenv. This allow me to forget about the specific python version used for each project, avoid interferences with the default python installation and between my projects, is relatively light, and may have other advantages I cannot imagine with my …
Category: programming Tagged: python tools code
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Vertical stabilizer (Photo credit: Wikipedia)This post is about yaw control. This is also the post for which I did not find many references.
Remember the yaw is the axis controlled by the rudder. The rudder acts as any foil, providing a force dependant of its angle of attack. This …
Category: aviation Tagged: C star Flight dynamics yaw
Read MoreMy default LaTeX makefile evolved. Here is an update:
The makefile looks like:
LATEX=pdflatex
BIBTEX=bibtex
BIB=
RERUN='(There is undefined reference|Rerun to get (cross-references|the bars) right)'
%.pdf:%.tex
${LATEX} $<
@if [ -e $*.bbl ]; then ${BIBTEX} $* && ${LATEX} $< && ${LATEX} $< ; fi
@if egrep -q $(RERUN) $*.log ; then ${LATEX} $< ; fi
%.aux …Category: tools Tagged: GNU LaTeX Makefile Writing how to tools
Read MoreHow to make a block diagram with \(\text{\LaTeX}\)?
This article is mainly inspired by tex example.
Here is an example with tikz resulting in the following figure:
The code:
\documentclass{article}
\usepackage[landscape,margin=1cm]{geometry}
\usepackage{tikz}
\usetikzlibrary{shapes,arrows}
\begin{document}
\tikzstyle{block}=[draw,fill=red …Category: LaTeX Tagged: LaTeX how to
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Sail ship not tacking (Proto credit: Wikipedia)Maneuvering a sailship is not straight forward, especially when against the wind. This article is focused on sail position when turning for full-rigged sailships. The main sources are naval action videos.
The sailship has 2 or 3 masts. The fore-mast (the one …
Category: how to Tagged: nautical how to boats Sailship Tallship
Read MoreI've migrated the blog from wordpress to pelican. Static files, quite easy to use.
The migration process went well. The pelican import tool is easy to use and my rst linter highlighted the few errors done by the import tools (mainly empty sections).
There are still few artefacts due to …
Category: tools Tagged: pelican wordpress blog tools
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Seine, Paris, 1910. (Photo credit: Wikipedia)
On this mounth, the Seine decided to flood Paris and its neighborouds, so I took my camera to take pictures. I realised:
TV team waiting for the news
TV team waiting for the news
Guy taking picture thanks to a …
Category: photography Tagged: Flooding Paris Seine
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encoding conversion (Photo credit: Wikipedia)[/caption]
A common way to represent binary files in ascii-only diplay is to use base64. This is also done a piece of software does not handle unicode: it manipulate its base64 representation.
Category: tools Tagged: ASCII Base64 Binary file Linux Unix-like tools unix-like
Read More[caption id="" align="alignright" width="75" class="zemanta-img"]
standard key (Photo credit: Wikipedia)[/caption]
What happen when a PGP key expire? Obvious answer: you can no longer securely use it. Nevertheless, you may not delete it as you must be able to read your encrypted files.
Basics step that should …
Category: network security Tagged: FAQs Help and Tutorials Mail tools
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Loop device (Photo credit: Wikipedia)
Loop devices are used to acces any file as if it were a block device such as a disk. On GNU/linux, the canonical command to interact with loop devices is losetup . To list the next usable loop device : losetup -f
Category: how to Tagged: FAQs Help and Tutorials Linux tools Unix how to unix-like
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