Question

Is it possible to generate specific random numbers?

The generation of unique random numbers is done simply through randperm. example function idx=RandNumberSequence(Key,N) % us...

2 months ago | 1 answer | 0

Question

Is it possible to vectorize this?

I want to find the most occurring element in the matrix in column wise excluding zeror elements. e.g if A = [1 2 0 3 4 6; 9 3 4...

2 months ago | 3 answers | 1

Question

Is it possible to vectorize this ?

A matrix A(100x1000) a selective column defined in B(1x1000). The required processing is the mean of non zero elements of each c...

2 months ago | 2 answers | 0

Question

How to return multiple values by colfilt?

A matrix A 1000x1000, needd to be subdivided into patches of 5x5 (let us called B). then B is processed by subdividing it int...

2 months ago | 0 answers | 0

Question

Is it possible to find a seed to generate given set of integers?

Given certain ranfom integer numbers defined over [1 N]. Is it possible to find a SEED that is cappable of doing the inverse op...

3 months ago | 1 answer | 0

Question

How can we plot pixel difference histogram accurately?

function PDH(img1,img2) diffImage2 = imfilter(img2, [1, -1]); diffImage1 = imfilter(img1, [1, -1]); minValue1 = min(diffImage...

3 months ago | 1 answer | 0

Solved

Vector creation

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

3 months ago

Solved

Doubling elements in a vector

Given the vector A, return B in which all numbers in A are doubling. So for: A = [ 1 5 8 ] then B = [ 1 1 5 ...

3 months ago

Solved

Flip the vector from right to left

Flip the vector from right to left. Examples x=[1:5], then y=[5 4 3 2 1] x=[1 4 6], then y=[6 4 1]; Request not ...

3 months ago

Solved

Get the length of a given vector

Given a vector x, the output y should equal the length of x.

3 months ago

Solved

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...

3 months 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 ...

3 months ago

Question

How can we accurately estimate execution time?

Dear Matlab provides several functions choosing one depends mainly upon execution time. So how we can estimate processing time ...

3 months ago | 1 answer | 0

Answered

How to Vecrorizing conditional vactor mapping problem?

r=A.*3; r(r==0)=1; t1=repelem(B,r); t2=repelem(A,r); t3=t1.*t2; t3=dec2bin(t3)' c=regexprep(t3,'111','001'); c=c-'0'; c(...

How to Vecrorizing conditional vactor mapping problem?

r=A.*3; r(r==0)=1; t1=repelem(B,r); t2=repelem(A,r); t3=t1.*t2; t3=dec2bin(t3)' c=regexprep(t3,'111','001'); c=c-'0'; c(...

3 months ago | 0

| accepted

Question

How to Vecrorizing conditional vactor mapping problem?

Dear, A is a binary vector its values correspond to the number of times to repeat the corresponding number drawn from the vect...

4 months ago | 1 answer | 0

Question

How to Speedup conditional vector elements replacement?

Dear, a is a vector its values correspond to the number of times to repeat the corresponding number drawn from the vector b. f...

4 months ago | 1 answer | 0

Question

How can I speedup this for loop and ismember?

Due to the large size of the arrays, the following suffers from extremly slow execution. Is it possible to speedup this code. V...

4 months ago | 1 answer | 0

Answered

ismember function too slow

A=[1 2 3 4 5 6 7 8 9 10]; B=[3 4 9]; tt=ismember(B,A); if sum(tt)==3 Do Something; else Do Something; end

ismember function too slow

A=[1 2 3 4 5 6 7 8 9 10]; B=[3 4 9]; tt=ismember(B,A); if sum(tt)==3 Do Something; else Do Something; end

4 months ago | 0