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gonzalo Mier


96 total contributions since 2017

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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]; ...

약 2달 ago

Answered
How to change the parameters of a loop
figure; for i=1:9 A(((i-1):i)*9+1) = instructions(i) plot(A(((i-1):i)*9+1)) end

3달 ago | 0

Answered
Setting pixel to maximum color values in grayscale image.
You can use uint8 to saturate all the values between 0 and 255. You can test it as: gray_as_RGB = uint8(repmat(grayimg, [1 1 ...

3달 ago | 0

Answered
How to solve this question?
Oh, a really interesting problem. Lets try to solve it as easy as possible... Lets propose some ideas: Sum two constant numbe...

3달 ago | 0

Answered
Standard deviation of decimal numbers
The error you are obtaining is less than 1e-15, which is 0 in practice. If you want to consider this case, you can use a thresho...

3달 ago | 1

Answered
Norm function for 2 variables
n = norm(v) returns the Euclidean norm of vector v. This norm is also called the 2-norm, vector magnitude, or Euclidean leng...

3달 ago | 0

Answered
PARFOR Transparency violation error
Parfor loop don't work in GPU, it just multithread your CPU code, so you have to be careful with the variables you use because a...

3달 ago | 0

Answered
What is the fastest way to compute the first eigenvector?
Read about eigs

3달 ago | 0

| accepted

Answered
Why do i get a blank graph?
You are computing v1 as k1= 0.8*exp(-Ea1/(alpha*R*X(3))); v1=k1*A*X(1); v1 is a matriz of size 1x1. So when you do plot( "v...

4달 ago | 0

| accepted

Answered
How to import a 3D Python numpy array into Matlab ?
https://stackoverflow.com/questions/10997254/converting-numpy-arrays-to-matlab-and-vice-versa

4달 ago | 0

Answered
Is it possible to do multiple array of data on the same scatter plot;
Scatterplot is a really special function that needs a special syntax to plot more that one scatterplot together. If you need mo...

4달 ago | 1

| accepted

Answered
could anyone help me to solve my question
You don't need if here. You can mix them as: C = B; len_A = min(size(B,1),size(A,1)); C(1:len_A,:) = C(1:len_A,:) - A(1:len_...

4달 ago | 0

Answered
How do I create a matlab function using polyder that not only gives the coefficients but also gives the equation
I think you need here the function poly2sym: https://www.mathworks.com/help/symbolic/poly2sym.html

4달 ago | 0

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Answered
Needs derivative w.r.t. ' y ' & then graph w.r.t ' t '
diff is a function of the symbolic package, so when you try to derivate U, you are derivating a constant, and by a constant, so ...

4달 ago | 0

| accepted

Answered
Extracting histogram each row of matrix
Read histogram

4달 ago | 0

Answered
Matlab plots y axis values in plot for array of x arrays
There is no problem here. Matlab is doing what you want. The problem that you see may be because you have one row that is in a l...

4달 ago | 0

| accepted

Answered
how can i make histogram without missing value(with nan,isnan)
You can remove nan before computing the histogram histogram(ws(~isnan(ws(:))))

4달 ago | 1

| accepted

Answered
How to get string field from struct with each element separated
The problem is you are using char instead of string. '1.33' is a vector of char, so if you make a vector of vectors, it compiles...

4달 ago | 0

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Solved


Check if number exists in vector
Return 1 if number _a_ exists in vector _b_ otherwise return 0. a = 3; b = [1,2,4]; Returns 0. a = 3; b = [1,...

4달 ago

Solved


Divide by 4
Given the variable x as your input, divide it by four and put the result in y.

4달 ago

Solved


Reverse the vector
Reverse the vector elements. Example: Input x = [1,2,3,4,5,6,7,8,9] Output y = [9,8,7,6,5,4,3,2,1]

4달 ago

Solved


Swap two numbers
Example Input: a = 10 b = 20 Output a = 20 b = 10

4달 ago

Solved


find the surface area of a cube
given cube side length x, find the surface area of the cube, set it equal to y

4달 ago

Solved


Vectors counting by 2
Create a vector numbers from 7 to 15 in increments of 2

4달 ago

Solved


Min of a Matrix
Return the minimum value in the given matrix.

4달 ago

Solved


factorial of a number x
Factorial of a number x

4달 ago

Solved


Counting down
Create a vector that counts from 450 to 200 in increments of 10.

4달 ago

Solved


Basic arrays operations.
Apply element-by-element binary operation 'fun' to two arrays (A and B).

4달 ago

Solved


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

4달 ago

Solved


Vector creation
Create a vector using square brackets going from 1 to the given value x in steps on 1. Hint: use increment.

4달 ago

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