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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]; ...

7 meses 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

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

8 meses 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 ...

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 ...

8 meses 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...

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...

8 meses 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...

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...

8 meses 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...

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...

8 meses 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...

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...

8 meses ago | 0

Answered

What is the fastest way to compute the first eigenvector?

Read about eigs

What is the fastest way to compute the first eigenvector?

Read about eigs

8 meses 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...

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...

9 meses 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

How to import a 3D Python numpy array into Matlab ?

https://stackoverflow.com/questions/10997254/converting-numpy-arrays-to-matlab-and-vice-versa

9 meses 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...

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...

9 meses 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_...

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_...

9 meses 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

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

9 meses ago | 0

| accepted

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 ...

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 ...

9 meses ago | 0

| accepted

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...

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...

9 meses 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(:))))

how can i make histogram without missing value(with nan,isnan)

You can remove nan before computing the histogram histogram(ws(~isnan(ws(:))))

9 meses 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...

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...

9 meses ago | 0

| accepted

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,...

9 meses ago

Solved

Divide by 4

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

9 meses 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]

9 meses 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

9 meses ago

Solved

Basic arrays operations.

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

9 meses 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.

9 meses ago