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Mostafa


32 total contributions since 2016

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Answered
Normalize from -1 to 1... help me
%dataSet = your data min_L = -1; max_L = 1; dataSet = dataSet/norm(dataSet, Inf); %Normalize between 0 and 1 dataS...

3 years ago | 0

Answered
Cell array in a loop
% B is already defined, a matrix of doubles % A is already defined, a cell array of matrices % B and the matrices in A h...

3 years ago | 0

Answered
Import data from text file in awkward format
This is neither the fastest, nor the most elegant solution, but it works. %Read File fid = fopen('example.txt','rt'); ...

3 years ago | 0

| accepted

Answered
While loop going one too far
Ah, the good old "Hard equality" problem.. Simply put, (i<2) doesn't return false, since (i) is not actually equal to (2) ! ...

3 years ago | 0

Answered
Error with transfer function?
Aside from posting your model to actually identify the problem, possible solutions could be: 1) Initialize your blocks (Inte...

3 years ago | 0

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Answered
Import of mixed string and numerical data from excel file
I believe that the easiest (not the fastest) way is to import all the data at once in matlab environment then process it there. ...

3 years ago | 0

| accepted

Answered
Problem with loop to construct graph
%Reading the data from sheet 1, cells B2 to D8 dataMat = xlsread('Book1.xlsx', 1, 'B2:D8', 'basic'); %Get sum of numbers...

3 years ago | 0

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Answered
How to skip (iteration) empty folders and empty text files
%Get list of all files in current directory and beneath [~,list] = system('dir /S *.txt'); result = textscan(list, '%s',...

3 years ago | 0

| accepted

Solved


Remove any row in which a NaN appears
Given the matrix A, return B in which all the rows that have one or more <http://www.mathworks.com/help/techdoc/ref/nan.html NaN...

3 years ago

Solved


Create times-tables
At one time or another, we all had to memorize boring times tables. 5 times 5 is 25. 5 times 6 is 30. 12 times 12 is way more th...

3 years ago

Solved


Fibonacci sequence
Calculate the nth Fibonacci number. Given n, return f where f = fib(n) and f(1) = 1, f(2) = 1, f(3) = 2, ... Examples: Inpu...

3 years ago

Solved


Finding Perfect Squares
Given a vector of numbers, return true if one of the numbers is a square of one of the other numbers. Otherwise return false. E...

3 years ago

Solved


Triangle Numbers
Triangle numbers are the sums of successive integers. So 6 is a triangle number because 6 = 1 + 2 + 3 which can be displa...

3 years ago

Solved


Select every other element of a vector
Write a function which returns every other element of the vector passed in. That is, it returns the all odd-numbered elements, s...

3 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:...

3 years ago

Answered
How to remove the MATLAB logo when masking a MATLAB Function block in Simulink?
Right Click on the Matlab function block -> Mask -> Edit Mask In the 'Icon drawing commands' write disp('MyFunc') Pre...

3 years ago | 0

Solved


Determine whether a vector is monotonically increasing
Return true if the elements of the input vector increase monotonically (i.e. each element is larger than the previous). Return f...

3 years ago

Solved


Make a checkerboard matrix
Given an integer n, make an n-by-n matrix made up of alternating ones and zeros as shown below. The a(1,1) should be 1. Examp...

3 years ago

Solved


Column Removal
Remove the nth column from input matrix A and return the resulting matrix in output B. So if A = [1 2 3; 4 5 6]; and ...

3 years ago

Solved


Who Has the Most Change?
You have a matrix for which each row is a person and the columns represent the number of quarters, nickels, dimes, and pennies t...

3 years ago

Solved


Swap the first and last columns
Flip the outermost columns of matrix A, so that the first column becomes the last and the last column becomes the first. All oth...

3 years ago

Solved


Find all elements less than 0 or greater than 10 and replace them with NaN
Given an input vector x, find all elements of x less than 0 or greater than 10 and replace them with NaN. Example: Input ...

3 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...

3 years ago

Solved


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

3 years ago

Solved


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

3 years ago

Solved


Add two numbers
Given a and b, return the sum a+b in c.

3 years ago

Solved


Find the sum of all the numbers of the input vector
Find the sum of all the numbers of the input vector x. Examples: Input x = [1 2 3 5] Output y is 11 Input x ...

3 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...

3 years ago

Answered
Dear Sirs, how to get points that are in minimum distance from a curve, that was plotted using 100 points, with respect to points of other curve.
Assuming the two arrays are of the same size: values = 0 : pi/100 : 2*pi; A = cos(values); B = sin(values); min_di...

3 years ago | 0

Answered
Where is my mistake in trying to write a cell array with both strings and numbers to XLS file?
You can't pass data of "cell" class to an xls file, so you need to convert all data to strings. Either cast _char(data)_ or ...

3 years ago | 1

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