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# Mitch Martelli

### UNIGE

34 total contributions since 2011

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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

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...

3 years ago

Solved

Pernicious Anniversary Problem
Since Cody is 5 years old, it's pernicious. A <http://rosettacode.org/wiki/Pernicious_numbers Pernicious number> is an integer w...

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 ...

4 years ago

Solved

Weighted average
Given two lists of numbers, determine the weighted average. Example [1 2 3] and [10 15 20] should result in 33.333...

4 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...

4 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 ...

4 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...

4 years ago

Solved

Find the dimensions of a matrix
Just find the number of columns of the given matrix. Example x = [1 2 3 4 5 6] y = 2

4 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:...

4 years ago

Solved

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

4 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...

4 years ago

Solved

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

6 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 ...

6 years ago

Question

Global variables in embedded Matlab function
Hi @ all, I would like to use some variables defined in a m-file into embedded Matlab block in Simulink. I would like to do t...

8 years ago | 1 answer | 0

### 1

create Executable file from simulink model
How I can do this? Maybe in the first question I have not been clear Let me shown a simple example : I have a simulink ...

8 years ago | 1

Question

create Executable file from simulink model
Hi @ all, I would like to ask you how I can build a model , using the Simulink Coder. I would like to call the so generated ...

8 years ago | 3 answers | 1

### 3

Hi, You use a for statement but I cant see no one indexed variable inside the loop. Maybe you would like to to this : nu...

8 years ago | 0

Extracting data from .mat file
Sorry i dont understand well your question to extract the data you can try to use getEntry, documentation are reported in the...

8 years ago | 0

| accepted

mean and standard deviation code
Hi, From your post i suppose that you would like the mean rows by rows, and you want the standard deviation columns by column...

8 years ago | 0

Extracting data from .mat file
Hi, You can use the reshape function. Example : data=rand(8760,1) B = reshape(data,24,365); B=B'; Regards M...

8 years ago | 0

I have a problem with plotting a summation equation
Hi, you mean something like that ? y=0:0.025:1; x=0:0.05:0.7; n=1:1:50; [X,Y]=meshgrid(x,y); for i=1:size(n,2) ...

8 years ago | 1

| accepted

Question

Fully standalone executable file
Hi @ all, I'm not an expert in compiler. I would like to ask if someone tried to create, starting from matlab m file, a compl...

8 years ago | 3 answers | 0

### 3

Question

Hi I would like to import in Simulink about 30 variables (with constant value) declared in .m file and the use these in one ...

9 years ago | 1 answer | 0

### 1

Question

Hi @ all, I would like to ask if someone can explain me how I can add labels and titles in the simulink block multi graphplot...

9 years ago | 1 answer | 0

### 1

equation with multiple X
Hi If you want the division element by element you must put the dot in the right position: y = ((x*20000)./(x+20000))/...

9 years ago | 1

| accepted

operations on specific row
Hi, for your first question you can use : p = polyfit(A(:,3),A(:,2),1); Pay attention to use one like degree . For the sec...

9 years ago | 0

| accepted

Question

Ode option
Hi at all, I would like to ask you if there is a way,using standard matlab ode function, to stop the calculation before the f...

9 years ago | 1 answer | 0

### 1

Question

Simulink model in a for loop
Hi at all, I have a problem when I run a simulink model inside a for loop. More in detail when I run the model with the comm...

9 years ago | 1 answer | 0