Answered
Why does the array only work once?
Hi, You have overlooked a few dot operations. Here is the corrected part of your code: %Finding angle Phi of force P ...

2 months ago | 1

Answered
Variable indexing for loop when vector is negative (Array indices must be positive integers or logical values)
Hi, Vectorization is the most efficient way, e.g.: a = 12*x.^5; Or if you need to do via a loop, then for ii=1:numel(x) ...

2 months ago | 0

Answered
How to check if a column data is equal to any of a group of values?
Altenrative (more efficient one) solution can be this one: S = sum(sum(ismember(A,B)))

2 months ago | 0

Answered
How to check if a column data is equal to any of a group of values?
You can use a loop for instance if you have many Bs, e.g.: for ii = 1:numel(B) Ind = A==B(ii); S(ii) = sum(Ind(:)); ...

2 months ago | 0

Answered
Taylor Series for e^x with while loop
x = 1.5; SUM = 0; ANS = exp(x); Err = ANS-SUM; Err_Margin = 1e-9; ii=0; while Err > Err_margin ii=ii+1; ...

2 months ago | 0

Answered
electromechanical relays and real time simulation
With your exercise, it is quite easy to employ Simulink/Simscape toolbox. See simulink dashboard tutorial: https://www.mathworks...

2 months ago | 0

Answered
I have a function to find the standard deviation of a matrix of scores, I now need to use that same standard deviation equation using the mean of said scores and get a scalar in return.
To get mean and median values of the whole class (e.g. Score of size 25-by-10) in one subject (e.g.: assignment # 1) should be c...

2 months ago | 0

| accepted

Answered
Removing outliers for a matrix
Use logical indexing.

2 months ago | 0

Answered
Excite Single Input of a MIMO System
Use switch block either manual or combinatorial switch block: https://www.mathworks.com/help/simulink/slref/manualswitch.html...

2 months ago | 0

Answered
Save Figure as JPEG or PNG from Vector Scope
Use: saveas() See: https://www.mathworks.com/help/matlab/ref/saveas.html

2 months ago | 0

Answered
How to check if a column data is equal to any of a group of values?
Hi, Ind = sum(Ind1) + (Ind2);

2 months ago | 0

Solved


Split a string into chunks of specified length
Given a string and a vector of integers, break the string into chunks whose lengths are given by the elements of the vector. Ex...

2 months 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 months ago

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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 months 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 months ago

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Cell Counting: How Many Draws?
You are given a cell array containing information about a number of soccer games. Each cell contains one of the following: * ...

2 months ago

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Remove element(s) from cell array
You can easily remove an element (or a column in any dimension) from a normal matrix, but assigning that value (or range) empty....

2 months ago

Solved


Convert a Cell Array into an Array
Given a square cell array: x = {'01', '56'; '234', '789'}; return a single character array: y = '0123456789'

2 months ago

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Convert a numerical matrix into a cell array of strings
Given a numerical matrix, output a *cell array of string*. For example: if input = 1:3 output is {'1','2','3'} whic...

2 months ago

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Create a cell array out of a struct
Create a cell array out of a (single) struct with the fieldname in the first column and the value in the second column: in: ...

2 months ago

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I Plead the Fifth
Write a function to provide a yes or no answer to the input string. However, it must plead the 5th amendment (return an empty st...

2 months ago

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Tick. Tock. Tick. Tock. Tick. Tock. Tick. Tock. Tick. Tock.
Submit your answer to this problem a multiple of 5 seconds after the hour. Your answer is irrelevant; the only thing that matte...

2 months ago

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Energy of a photon
*&#9883 &#9762 &#9883 &#9762 &#9883 &#9762 &#9883* Given the frequency F of a photon in giga hertz. Find energy E of this...

2 months ago

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Cell joiner
You are given a cell array of strings and a string delimiter. You need to produce one string which is composed of each string fr...

2 months ago

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Pattern Sum
Write a function which receives two single digit positive integers, (k and m) as parameters and calculates the total sum as: k...

2 months ago

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Compute Fibonacci Number
Compute the _n_-th Fibonacci Number f(0) = 0, f(1) = 1, f(2) = 1, f(3) = 2, ... f(42) = 267914296

2 months ago

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Square Digits Number Chain Terminal Value (Inspired by Project Euler Problem 92)
Given a number _n_, return the terminal value of the number chain formed by summing the square of the digits. According to the P...

2 months ago

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Alternating sum
Given vector x, calculate the alternating sum y = x(1) - x(2) + x(3) - x(4) + ...

2 months ago

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Sum of first n terms of a harmonic progression
Given inputs a, d and n, return the sum of the first n terms of the harmonic progression a, a/(1+d), a/(1+2d), a/(1+3d),....

2 months ago

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Can we make a triangle?
Given three positive number, check whether a triangle can be made with these sides length or not. remember that in a triangle su...

2 months ago

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