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MATLAB Basic: rounding

Do rounding near to zero Example: -8.8, answer -8 +8.1 answer 8

2 years 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 years ago

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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

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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

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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 years 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 years ago

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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 years ago

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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 years 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 years 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 years ago

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How many Fibonacci numbers?

Find the number of unique Fibonacci numbers (don't count repeats) in a vector of positive integers. Example: x = [1 2 3 4...

2 years ago

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Project Euler: Problem 2, Sum of even Fibonacci

Each new term in the Fibonacci sequence is generated by adding the previous two terms. By starting with 1 and 2, the first 10 te...

2 years ago

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Number of Even Elements in Fibonacci Sequence

Find how many even Fibonacci numbers are available in the first d numbers. Consider the following first 14 numbers 1 1 2...

2 years ago

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Fibonacci-Sum of Squares

Given the Fibonacci sequence defined by the following recursive relation, * F(n) = F(n-1) + F(n-2) * where F(1) = 1 and F(1)...

2 years ago

Question

Check that point doesnt lay on line in Simulink block diagram

Hello! I want to connect some block programatically. The simplest way for that is to add_line by points but when i add line by ...

2 years ago | 1 answer | 0

Answered

Problems with the legend function.

Hello! The simplest way is to define 'DisplayName' parameter for curves. For example: plot(-7.000,f(-7.000),'sq','MarkerSize',...

Problems with the legend function.

Hello! The simplest way is to define 'DisplayName' parameter for curves. For example: plot(-7.000,f(-7.000),'sq','MarkerSize',...

2 years ago | 0

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Find a subset that divides the vector into equal halves

Given a vector x, return the indices to elements that will sum to exactly half of the sum of all elements. Example: Inpu...

2 years ago

Answered

A and B must be floating-point scalars.

Hello, You need to replace i = integral (fun, x, 0, t); to one of variants below: If you want to integrate in x range (from x(...

A and B must be floating-point scalars.

Hello, You need to replace i = integral (fun, x, 0, t); to one of variants below: If you want to integrate in x range (from x(...

3 years ago | 0

| accepted

Question

Can I mark block as 'algebraic loop breaker'?

Hello, I create block which implement time shift in signal for some steps but Simulink decides that there is algebraic loop wit...

3 years ago | 0 answers | 0

Answered

Insert number in polynomial

Hello, You need to replace f= @(x)p; by f = symfun(p,x);.

Insert number in polynomial

Hello, You need to replace f= @(x)p; by f = symfun(p,x);.

3 years ago | 0

Question

Using complex structure in simulink constant block

Hello, I know that there is way to pass structure to simulink model as bus object but what should I do if i need to pass comple...

3 years ago | 1 answer | 0

Question

Force output for function with no output

Hello! I am working with function handles and get error because function does not return anything. Can I force any function to ...

3 years ago | 1 answer | 0

Question

Run VBA code in MS Office through COM

Hello, I need to take some data from program through COM but that program does not working with Matlab correctly. However tha...

3 years ago | 0 answers | 0

Answered

How i can call matlab basic function if that name is accotiated with couple of functions?

The simplest way to do that is use that code: varargout = builtin('diff',varargin{:}); Also you can looking for somethin...

How i can call matlab basic function if that name is accotiated with couple of functions?

The simplest way to do that is use that code: varargout = builtin('diff',varargin{:}); Also you can looking for somethin...

4 years ago | 0

| accepted

Question

How i can call matlab basic function if that name is accotiated with couple of functions?

Hello, I need to call function |diff| (differences between array elements) for array of symbolic variable but matlab is using...

4 years ago | 2 answers | 0

Answered

How to solve det(s^2*M+s*C(s)+K)=0 for s as fast as posible

You can try to use that code from <https://www.mathworks.com/matlabcentral/fileexchange/67052-matlab-scripts there>: A=Ga...

How to solve det(s^2*M+s*C(s)+K)=0 for s as fast as posible

You can try to use that code from <https://www.mathworks.com/matlabcentral/fileexchange/67052-matlab-scripts there>: A=Ga...

4 years ago | 0

Solved

Bottles of beer

Given an input number representing the number of bottles of beer on the wall, output how many are left if you take one down and ...

4 years ago

Answered

Help reducing memory usage during large matrix multiplication

I think that problem can be solved by the manual multiplication of matrices. %note: V2=(V2-I*C) is the same V2(172)=V2(172)...

Help reducing memory usage during large matrix multiplication

I think that problem can be solved by the manual multiplication of matrices. %note: V2=(V2-I*C) is the same V2(172)=V2(172)...

4 years ago | 0

Answered

How I can fix this "Signal Dimension" error message ?

You may use |Simulink/Signal Attributes/Signal Specification block|. Specify number of dimensions like that is shown on the pict...

How I can fix this "Signal Dimension" error message ?

You may use |Simulink/Signal Attributes/Signal Specification block|. Specify number of dimensions like that is shown on the pict...

4 years ago | 1

Solved

Model a mass spring system

Model an ideal mass-spring system shown below where the spring is initially stretched. <<http://blogs.mathworks.com/images/se...

4 years ago