MATLAB and Python Recipes for Earth Sciences
Martin H. Trauth, University of Potsdam, Germany
One of the really missing things in MATLAB is a version history of specific functions. As a MATLAB user for 25 years, I have a lot of MATLAB code that contains functions that have been modified, exchanged, or completely disappeared. I am mainly concerned with functions from the Signal Processing Toolbox, but this can also be due to the fact that I use this toolbox the longest. Continue reading “Missing Version History of MATLAB Functions [UPDATE: Fixed]”
The Apple iPhone/MATLAB Mobile/LEGO MINDSTORMS scanner is an essential tool of our course in acquiring, processing and analyzing typical data earth sciences. Continue reading “The Apple iPhone/MATLAB Mobile/LEGO MINDSTORMS Scanner, Part 1”
This exercise is intended to help students to understand how to determine the impulse response sequence and the frequency characteristic of the LEGO infrared sensor. Continue reading “Determining the Spatial Resolution of the LEGO Infrared Sensor”
A fuzzy-logic based algorithm may provide a better way to detect annual sediment layers (varves) in digital images of sediments. Continue reading “Automated Varve Counting Using A Fuzzy-Logic Algorithm”
This exercise is intended to help students to understand how to determine the impulse response sequence and the frequency characteristic of the LEGO ultrasonic sensor. Continue reading “Determining the Spatial Resolution of the LEGO Ultrasonic Sensor”
Quantifying the composition of substances in geosciences, such as the mineral composition of a rock in thin sections, or the amount of charcoal in sieved sediment samples, is facilitated by the use of image processing methods. Thresholding provides a simple solution to segmenting objects within an image that have different coloration or grayscale values. As an example we use thresholding to separate the dark charcoal particles and count the pixels of these particles after segmentation. Continue reading “Quantifying Charcoal in Microscope Images Using MATLAB, Part 1”
The second MATLAB/LEGO MINDSTORMS exercise is intended to help students to understand how to control motors and to read sensors such as the sonic sensor using MATLAB. Continue reading “Controlling Motors and Read Sensors of LEGO MINDSTORMS with MATLAB”
Today, geoinformatics master student Jonas Räsch and I started to design the first MATLAB/LEGO MINDSTORMS exercises for our MATLAB/LEGO MINDSTORMS Environmental Remote Sensing Lab. Continue reading “Communicating with the LEGO MINDSTORMS EV3 Brick using MATLAB”