Murat Kendir's Knowledge "Basement"*

"We found a hut and dry wood here. Others will come. Give them rice, salt and matches, Captain."

from the movie "Dersu Uzala", Akira Kurosawa, 1975

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Who am i?

Murat Kendir.

I was born in Germany and spent my youth and most of my professional career in Turkey. I completed a Bachelor's degree in Geomatics Engineering and a Master's degree in Geographic Information Technology at Istanbul Technical University. I have gained work experience in both practical and information technology fields. I am currently working as a researcher at the Technical University of Munich. I am married and have one child.

In many of my other interests I like to remain an amateur. I believe in learning to learn. Living is a serious business. But there should always be time for good music or a good coffee.

What is the purpose?

  • organizing my knowledge/information/data
    • to be more nerd about these things.
  • That's all. Enjoy the website!

Latest Notes

Row Column 1 Column 2 Column 3 Column 4
1 cos(ψ)·cos(θ)·sx [cos(ψ)·sin(θ)·sin(φ) − sin(ψ)·cos(φ)]·sy [cos(ψ)·sin(θ)·cos(φ) + sin(ψ)·sin(φ)]·sz tx
2 sin(ψ)·cos(θ)·sx [sin(ψ)·sin(θ)·sin(φ) + cos(ψ)·cos(φ)]·sy [sin(ψ)·sin(θ)·cos(φ) − cos(ψ)·sin(φ)]·sz ty
3 −sin(θ)·sx cos(θ)·sin(φ)·sy cos(θ)·cos(φ)·sz tz
4 0 0 0 1

Affine Transformation (Combined Formula) 

for file in *.mp3; do
    ffmpeg -i "$file" -c:a libvorbis "${file%.mp3}.ogg"
done

High Quality Alternative: 

for file in *.mp3; do
    ffmpeg -i "$file" -c:a libvorbis -q:a 5 "${file%.mp3}.ogg"
done

batch convert mp3 to ogg wo loss 

ogr2ogr [-f/-of/<format_name>] ... [file_name] [PG:<Connection_Info>] [-nln/<New_Layer_Name> ...] ... [-sql] ... / <table_name>

Converting a db table to GeoPackage