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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...

7 years ago

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Find the numeric mean of the prime numbers in a matrix.
There will always be at least one prime in the matrix. Example: Input in = [ 8 3 5 9 ] Output out is 4...

7 years ago

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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...

7 years ago

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Return the 3n+1 sequence for n
A Collatz sequence is the sequence where, for a given number n, the next number in the sequence is either n/2 if the number is e...

7 years ago

Answered
I have license Id but no activation key. how to get activation key?
Check this link <https://www.mathworks.com/matlabcentral/answers/102845-where-can-i-find-the-activation-key-or-file-installa...

7 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...

7 years ago

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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...

7 years ago

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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 ...

7 years ago

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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 ...

7 years ago

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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...

7 years ago

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

7 years ago

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

7 years ago

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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 ...

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

Answered
How can I fill an empty matrix?
There are two points to note: 1. The piece of code below will overwrite Temporal's existing value at different values of i (w...

7 years ago | 0

Answered
I have a problem when using the matlab. please help me.
For a trivial implementation, You can open the file, scan each line for the character _" * "_ (using _'contains'_ function) ...

7 years ago | 0

Answered
run matlab as root (ubuntu)
1. Do take a look at the link and follow the steps to resolve license activation: <https://www.mathworks.com/matlabcentral/an...

7 years ago | 0

Answered
Error using load Must be a string scalar or character vector
You imported the data and stored the stress values etc. inside a *struct A*. s1 should get the value from the structure instead ...

7 years ago | 0

Answered
Unable to load Large S2P file (Size is 2MB) using read(rfdata.data ,'File Name'). while same file can be read using sparameters function
<https://www.mathworks.com/help/matlab/ref/tabulartextdatastore-properties.html#property_d119e1035627> By using _'read'_ comm...

7 years ago | 0

Answered
Why do I have "License checkout failed" problem on MATLAB 2017b on Ubuntu 17.10 after I activate MATLAB?
Try accessing MATLAB as root? sudo su matlab

7 years ago | 0

Answered
Appdesigner does not start in Matlab 2016
* Try the command below, restart MATLAB and open Appdesigner restoredefaultpath * In MATLAB, go to "Preferences -> MAT...

7 years ago | 0

Answered
In 2016b, i cannot able to see the Code Generation Tab in Configuration parameters, I have Embedded Coder License
* Verify license using command - (should return 1) license('test','RTW_Embedded_Coder') * Type _'ver'_ in the command wi...

7 years ago | 0

| accepted

Answered
Creation of double columns whose max size is 2 x 2 from a matrix whose size is n>2 x n>2 ( e.g. with n max = 800)
B = rand(2,4); count = 1; [xdim ydim] = size(B); for i=1:xdim-1 for j=1:ydim-1 C{count} = B(i:i+1,j:j+1); co...

7 years ago | 0

| accepted

Answered
how do you Calculate the amplitude of the signal for a period of 1 second
This is a very trivial implementation of calculating max / min values of signal amplitude (sine in this case) at a particular ti...

7 years ago | 0

Answered
bwboundaries is implemented using which tracing algorithm?
<https://www.mathworks.com/help/images/ref/bwboundaries.html> states that _"the bwboundaries function implements the Moore-Neigh...

7 years ago | 0

| accepted

Answered
cell array contain zeros matrix
for i=1:100 a{i} = zeros(366,28); end Loop through each cell array block and insert a zeros matrix inside.

7 years ago | 1

| accepted

Answered
Find elements from A in B and get the index of found element in B
You can use the _'intersect'_ command in order to extract the *common values* along with the *indices* from base arrays A and B....

7 years ago | 1

Answered
How to draw a rectangle around a blob?
Hi Sachin, 1. *Using Rectangle:* You can use _variable names_ instead of _values_ in the *'rectangle'* command. You have the...

7 years ago | 1

Answered
Save a column as a variable
Hi Lili, If I understand correctly, you fill the matrix c with data inside the _'for'_ loop and now you want to extract/copy...

7 years ago | 1

Answered
Put in alphabet order a structure only by one field
Hello, Unfortunately, there is no direct way to sort a structure according to one of the field. The steps below involve trans...

7 years ago | 0