Dirk Engel

S-PACT GmbH

Last seen: Today | Active since 2012

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Founder and Managing Director of S-PACT, mainly responsible for product development, support, and software solutions.

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Rescale Scores
Each column (except last) of matrix X contains students' scores in a course assignment or a test. The last column has a weighted...

10 months ago

Solved

Calculate Inner Product
Given two input matrices, x and y, check if their inner dimensions match. If they match, create an output variable z which cont...

10 months ago

Solved

Find MPG of Lightest Cars
The file cars.mat contains a table named cars with variables Model, MPG, Horsepower, Weight, and Acceleration for several classi...

10 months ago

Solved

Find the Best Hotels
Given three input variables: hotels - a list of hotel names ratings - their ratings in a city cutoff - the rating at which yo...

10 months ago

Solved

Crop an Image
A grayscale image is represented as a matrix in MATLAB. Each matrix element represents a pixel in the image. An element value re...

10 months ago

Solved

Calculate BMI
Given a matrix hw (height and weight) with two columns, calculate BMI using these formulas: 1 kilogram = 2.2 pounds 1 inch = 2...

10 months ago

Solved

Plot Damped Sinusoid
Given two vectors |t| and |y|, make a plot containing a blue ( |b| ) dashed ( |--| ) line of |y| versus |t|. Mark the minimum...

10 months ago

Solved

Calculate a Damped Sinusoid
The equation of a damped sinusoid can be written as y = A.ⅇ^(-λt)*cos(2πft) where A, λ, and f are scalars and t is a vector. ...

10 months ago

Solved

Solve a System of Linear Equations
Example: If a system of linear equations in x₁ and x₂ is: 2x₁ + x₂ = 2 x₁ - 4 x₂ = 3 Then the coefficient matrix (A) is: 2 ...

10 months ago

Solved

Verify Law of Large Numbers
If a large number of fair N-sided dice are rolled, the average of the simulated rolls is likely to be close to the mean of 1,2,....

10 months ago

Solved

Convert from Fahrenheit to Celsius
Given an input vector F containing temperature values in Fahrenheit, return an output vector C that contains the values in Celsi...

10 months ago

Solved

Calculate Amount of Cake Frosting
Given two input variables r and h, which stand for the radius and height of a cake, calculate the surface area of the cake you n...

10 months ago

Solved

Find the Oldest Person in a Room
Given two input vectors: * |name| - user last names * |age| - corresponding age of the person Return the name of the ol...

10 months ago

Solved

Flip the vector from right to left
Flip the vector from right to left. Examples x=[1:5], then y=[5 4 3 2 1] x=[1 4 6], then y=[6 4 1]; Request not to use d...

10 months ago

Answered
Short Pause doesn't come back
The white/hollow arrow indicates that the line is currently executing, but that the workspace is currently unloaded. Consider th...

10 months ago | 0

Answered
Enumeration class input modification possible?
A static method is the correct approach from an OOP perspective. In other programming languages, a static method for creating an...

10 months ago | 0

Answered
Deploying applications that run continuously for months
Experienced developer here, with some deployed apps running as back-end services uninterruptedly for years on Windows. We don'...

10 months ago | 0

Answered
Deploying stand alone applications
Does the application run on the host PC where MATLAB is installed? If yes, then MATLAB runtime (MCR) is not installed or registe...

10 months ago | 0

Answered
Matlab Deployed Applications and Libraries
Any kind of plug-in pattern using m-files is not possible. This is because during compilation your application gets encrypted by...

10 months ago | 0

Answered
matlab compiler vs mcc functionality
I assume that by "MATLAB Compiler" you are referring to the MATLAB Compiler user interface (deplytool) which you can use to buil...

1 year ago | 1

Answered
Is it possible to call a MATLAB .dll from C# in parallel?
No, because the MATLAB runtime instance that is used under the hood to execute your run_analysis() method is single-threaded. If...

1 year ago | 0

Answered
ClassFactory cannot supply requested class : "MWComUtil.MWUtil"
The error indicates that your COM component (or any of its dependencies) is not registered correctly. Try to register your add-i...

1 year ago | 0

Answered
MWArray assembly failed to be initialized
Try deleting the MATLAB Runtime cache folder. If the maximum cache size is reached, or the cache contains corrupted files, you m...

1 year ago | 0

Answered
where can I get the MCR v7.7?
The developers of MIQuant have placed a download link to the required version of MCR on their webpage https://journals.plos.org/...

2 years ago | 0

Answered
Why my standalone app is not working
I was able to compile and run your application with MATLAB R2019b. Make sure to disable "Do not display Windows Command Shell"...

2 years ago | 2

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Word Counting and Indexing
You are given a list of strings, each being a list of words divided by spaces. Break the strings into words, then return a maste...

2 years ago

Solved

Remove the polynomials that have positive real elements of their roots.
The characteristic equation for a dynamic system is a polynomial whose roots indicate its behavior. If any of the roots of the p...

2 years ago

Solved

Natural numbers in string form
Create a cell array of strings containing the first n natural numbers. _Slightly_ harder than it seems like it should be. Ex...

2 years ago

Solved

Fix the last element of a cell array
Note: this is lifted directly from <http://www.mathworks.com/matlabcentral/answers/82825-puzzler-for-a-monday Puzzler for a Mond...

2 years ago

Solved

String Array Basics, Part 1: Convert Cell Array to String Array; No Missing Values
<http://www.mathworks.com/help/matlab/characters-and-strings.html String array> and cell array are two types of containers for s...

2 years ago