Answered

How to solve matrix function in Matlab?

Define Z = AXB + C - X You have to start off with your initial best guess for X based upon the nature of the model. For lack of...

How to solve matrix function in Matlab?

Define Z = AXB + C - X You have to start off with your initial best guess for X based upon the nature of the model. For lack of...

3 months ago | 1

Answered

Creating blocks of average values from a series but avoiding dynamic variable names

Since you have 5 groups of 100 numbers, I thought you wanted the mean of each group. That gives 5 means. So I did not understand...

Creating blocks of average values from a series but avoiding dynamic variable names

Since you have 5 groups of 100 numbers, I thought you wanted the mean of each group. That gives 5 means. So I did not understand...

3 months ago | 1

| accepted

Answered

plot discrete time domain signals

I recommend using following substitutions: plot(t,y) axis( [-1 10 0 1])

plot discrete time domain signals

I recommend using following substitutions: plot(t,y) axis( [-1 10 0 1])

3 months ago | 0

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Solved

Longest run of consecutive numbers

Given a vector a, find the number(s) that is/are repeated consecutively most often. For example, if you have a = [1 2 2 2 1 ...

3 months ago

Answered

Imbedded If statement in Function help!

Did you know that >> logical(1) + logical(1) ans = 2 and that (age>50) is a logical?

Imbedded If statement in Function help!

Did you know that >> logical(1) + logical(1) ans = 2 and that (age>50) is a logical?

3 months ago | 1

Answered

In Online Matlab under App menu, Signal Analyzer not working?

The Signal Analyzer app comes with a purchase of the Signal Processing Toolbox. Please review this short video: Signal Analysi...

In Online Matlab under App menu, Signal Analyzer not working?

The Signal Analyzer app comes with a purchase of the Signal Processing Toolbox. Please review this short video: Signal Analysi...

3 months ago | 0

| accepted

Answered

Computer to boost MATLAB operation

As @Jan pointed out, it is very important that you run your profiler to find out where your time is being spent and focus on tho...

Computer to boost MATLAB operation

As @Jan pointed out, it is very important that you run your profiler to find out where your time is being spent and focus on tho...

3 months ago | 2

| accepted

Answered

Parfor nested loop Table definition

>> can I at least parallelise the writing of the 4 xlsx tables to speed up the code I do not see how to do that easily without ...

Parfor nested loop Table definition

>> can I at least parallelise the writing of the 4 xlsx tables to speed up the code I do not see how to do that easily without ...

3 months ago | 1

| accepted

Answered

How to obtain the first and second derivative of the "xt" function

You can use diff function as a crude way to take derivates. But, you should also know that diff introduces noise. Here is an art...

How to obtain the first and second derivative of the "xt" function

You can use diff function as a crude way to take derivates. But, you should also know that diff introduces noise. Here is an art...

3 months ago | 0

| accepted

Answered

Computer to boost MATLAB operation

Where is your time being spent - in the nested loop, or in the last loop that is outside the nested loop? If, by "last loop", y...

Computer to boost MATLAB operation

Where is your time being spent - in the nested loop, or in the last loop that is outside the nested loop? If, by "last loop", y...

3 months ago | 0

Answered

Giving a moving point a chance to change path every step?

You should just run the script directly. You should not try to call selectPath from the command line.

Giving a moving point a chance to change path every step?

You should just run the script directly. You should not try to call selectPath from the command line.

4 months ago | 1

Answered

Giving a moving point a chance to change path every step?

Not sure exactly what you want, but possibly this is getting close. The refactoring should make it easier to modify. % set rand...

Giving a moving point a chance to change path every step?

Not sure exactly what you want, but possibly this is getting close. The refactoring should make it easier to modify. % set rand...

4 months ago | 1

| accepted

Answered

Handling data cell array

Yes, regex is elegant. Here is a non-regex script. This algorithm allows the x,y,z to be in any order in each row of A. A = {'...

Handling data cell array

Yes, regex is elegant. Here is a non-regex script. This algorithm allows the x,y,z to be in any order in each row of A. A = {'...

4 months ago | 1

Answered

Matlab row subtraction of matrix

On the other hand, maybe you want to subtract row 2 from all the rows. In that case, you can do this. >> A A = 1 2 ...

Matlab row subtraction of matrix

On the other hand, maybe you want to subtract row 2 from all the rows. In that case, you can do this. >> A A = 1 2 ...

4 months ago | 0

| accepted

Answered

Matlab row subtraction of matrix

I am taking a guess as to what you want. Would be nice if you gave a simple matrix, A, and showed the desired result. But here i...

Matlab row subtraction of matrix

I am taking a guess as to what you want. Would be nice if you gave a simple matrix, A, and showed the desired result. But here i...

4 months ago | 0

Answered

Relation of Elements of matrix

B = 3; [r, ~] = ind2sub( size(A), find(A==B) ); z = A(sort(r),:); zu = unique(z(:))'

Relation of Elements of matrix

B = 3; [r, ~] = ind2sub( size(A), find(A==B) ); z = A(sort(r),:); zu = unique(z(:))'

4 months ago | 0

Answered

Matrix dimensions must agree.

As Jon pointed out, you can subtract two matrices if they are "the same size (same number of rows and columns)" It is also poss...

Matrix dimensions must agree.

As Jon pointed out, you can subtract two matrices if they are "the same size (same number of rows and columns)" It is also poss...

4 months ago | 0

Answered

how do u make a new value that is the sum of two columns

A = [1 2 ;3 4; 5 6 ;7 8; 9 10; 11 12; 13 14; 15 16] A = 1 2 3 4 5 6 7 8 9 10 ...

how do u make a new value that is the sum of two columns

A = [1 2 ;3 4; 5 6 ;7 8; 9 10; 11 12; 13 14; 15 16] A = 1 2 3 4 5 6 7 8 9 10 ...

4 months ago | 0

Solved

Find common elements in matrix rows

Given a matrix, find all elements that exist in every row. For example, given A = 1 2 3 5 9 2 5 9 3 2 5 9 ...

4 months ago

Solved

Getting the indices from a vector

This is a basic MATLAB operation. It is for instructional purposes. --- You may already know how to <http://www.mathworks....

4 months ago

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...

5 months ago

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,...

5 months 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...

5 months ago

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Swap the input arguments

Write a two-input, two-output function that swaps its two input arguments. For example: [q,r] = swap(5,10) returns q = ...

5 months 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]; ...

5 months ago

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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]

5 months ago

Solved

Length of the hypotenuse

Given short sides of lengths a and b, calculate the length c of the hypotenuse of the right-angled triangle. <<https://i.imgu...

5 months ago

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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...

5 months ago

Solved

Maximum value in a matrix

Find the maximum value in the given matrix. For example, if A = [1 2 3; 4 7 8; 0 9 1]; then the answer is 9.

5 months 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...

5 months ago