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David


University of Zürich

Last seen: 4 years ago |  Active since 2015

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The Hitchhiker's Guide to MATLAB
Output logical "true" if the input is the answer to life, the universe and everything. Otherwise, output logical "false".

6 years ago

Solved


Matrix indexing with two vectors of indices
Given a matrix M and two index vectors a and b, return a row vector x where x(i) = M(a(i),b(i)).

6 years ago

Submitted


imadjust3
Alternative to imadjust with N-D support.

7 years ago | 4 downloads |

Solved


Determine if input is odd
Given the input n, return true if n is odd or false if n is even.

7 years ago

Solved


Pizza!
Given a circular pizza with radius _z_ and thickness _a_, return the pizza's volume. [ _z_ is first input argument.] Non-scor...

7 years ago

Solved


Is my wife right?
Regardless of input, output the string 'yes'.

7 years ago

Solved


Make the vector [1 2 3 4 5 6 7 8 9 10]
In MATLAB, you create a vector by enclosing the elements in square brackets like so: x = [1 2 3 4] Commas are optional, s...

7 years ago

Solved


Times 2 - START HERE
Try out this test problem first. Given the variable x as your input, multiply it by two and put the result in y. Examples:...

7 years ago

Question


Proper way to save and load object linked list / container / graph like structures
Hi everyone, I'm currently developing a rather large and complex data structure based around Matlab's OOP. I have a central c...

7 years ago | 0 answers | 0

0

answers

Question


Best way to organise external toolboxes or turn them into packages
Hi folks, I'm working on a project with very different types of analysis involved and I utilise a couple of external toolboxe...

8 years ago | 0 answers | 0

0

answers

Question


FFT of wave packet, strange phase behaviour
Hi, I'm computing the fft of a wave packet (centred at t= 0, odd number of entries!) to determine its frequency and phase. ...

8 years ago | 0 answers | 0

0

answers

Question


parallel workers cannot see GPUs
I'm currently working on code that should run on a number of different HPC machines with multiple GPUs. The machine I'm testing ...

8 years ago | 0 answers | 0

0

answers

Question


Criterion for stability of oscillations / frequency stability?
Hi Matlab Community, I'm looking for a criterion (best case available in Matlab) to quantify stability of oscillations. I hav...

8 years ago | 1 answer | 0

1

answer

Question


Empty objects not calling get method?
Hi, I have a problem regarding object oriented programming in Matlab: If I have an empty object, i.e. myObject.empty I can ...

8 years ago | 1 answer | 0

1

answer

Question


Area of curved surface
Hi, I have data points belonging to a surface in 3D. I want to calculate the surface area of it. What are my options? If poss...

9 years ago | 2 answers | 1

2

answers

Question


Multiple Outputs in object method?
I'm working with OOP in matlab and I want to define a function to output multiple arguments. The idea is to easily concatenate ...

9 years ago | 1 answer | 0

1

answer

Question


Machine learning for peak characterisation
I have intensity profiles (extracted from an image analysis). Basically just f(x). With large datasets of different profiles. Th...

9 years ago | 1 answer | 0

1

answer

Question


Draw perfect 4 connected polygon skeleton OR Create polygons and characterise their regions
Hi, I have a segmentation of a cell layer (see Image). I extracted cell vertices and cell edges. Now based on the vertices al...

9 years ago | 0 answers | 0

0

answers

Question


Use both multi core CPUs
Hi, I have a two CPU multi core machine (16 cores each). I want to use a parfor loop on all 32 cores. But maxNumCompThreads g...

9 years ago | 1 answer | 0

1

answer