Question

Finding the index of spesific element in a matrix?

Lets say we have matrix: a=[ 2, 3, 5 3, 4, 7 4, 4, 4] ; I want to know index of a(4) which is the bold 3. Th...

1 year ago | 2 answers | 0

Question

How to find out whether there is a repetitive element in the columns of a matrix?

example: a=[ 1 2 3 4 2 1 1 4 2] Bold ones are that what I am looking for. There is no need for imformation abou...

1 year ago | 2 answers | 0

Question

Does using cells cause dramatically slow down the code?

Does using cells instead of matrixes make big difference?

1 year ago | 1 answer | 0

Question

Couldn't find what's wrong

a=cell(1,3) a{2}= [2 4 5] for i=1:3 if numel(a{i})==3 b=cellfun(@(q) q==a(i),a,'un',1) end end I trie...

1 year ago | 1 answer | 0

Question

What does 'un' mean here ?

[a1,b,c] = unique(cellfun(@char,a,'un',0)) I read the cellfun page but didn't find anything about this.

1 year ago | 1 answer | 0

Question

How to use 'setdiff' func. on cells

a and b are cells and I want to do this: setdiff(a,b);

1 year ago | 1 answer | 0

Question

Is there a way to start indexing with 0 in MATLAB?

a=[4 2 5 2] can I make this happen? a(0)=4

1 year ago | 2 answers | 0

Question

Why is this not working? And how to fix?

When i run this code, I get an error message about x1. syms x1 x2 c1 c2 c3 eq1= c1-c3==0; eq2= c2-c3==0; eq3= c1+c2+c3==1; ...

1 year ago | 1 answer | 0

Question

How to store vectores which have different lengts? (in a loop)

This doesnt work because every tupple have differents lengths : for i=2:5 ar(i,:)=ones(1,q(i)-q(i-1)+2); end q is a...

1 year ago | 1 answer | 0

Question

How to say this in MATLAB language?

I want to say a plus b equals to 10 math exuation: a+b=10 how write this in matlab?

1 year ago | 1 answer | 0

Question

Pattern search algorithm inMATLAB ?

Can i use this Matlab function: x = patternsearch(fun,x0,A,b,Aeq,beq,lb,ub) to solve something like this:

1 year ago | 0 answers | 0

Question

Where is the zero?

How to find the location of a zero (or a different number) in a vector ? like : a=[ 1 3 5 6 34 4 0 1 3 4 50] =...

1 year ago | 1 answer | 0

Question

How to write a fucntion which we don't know how many "in" values will be needed?

I want to know how to write first line of a function which we cant tell how many variables will be "inputed". example : f...

1 year ago | 1 answer | 0

Question

How to do division on matrices ?

[a b; c d]*[x;y]=[k;l] How can i calculate x and y if I know a,b,c,d and k,l ?

1 year ago | 2 answers | 0

Question

Extracting zeros from vectors

I need to extract zeros from a vector while keeping the same order of elements in s. Like this : S=[1 0 0 2 3 0 0 0 2 1 0...

1 year ago | 2 answers | 0

Question

Could someone explain how this code works?

S=[1 3 0 2 0 0]; C=[0 2]; [~,col] = ismember(C,S); S(col) = []; S = 1 3 0 0 This code i...

1 year ago | 1 answer | 0

Question

How to find if a vector has a repetitive element or not? And its repetition number

For example A=[ 1 3 1 1 2 3 5]

1 year ago | 1 answer | 0

Question

"setdiff" comand usage ?

when i run this code: a=[1 1 2]; b=[1]; setdiff(a,b) i get this: >> c ans = ...

1 year ago | 2 answers | 0

Question

Replacing 2 elements with each other randomly?

Like : a=[2 4 5 242 24] ------> a'=[2 242 5 4 24] my code is : rndm= myset(randperm(length(myset),2)) neighbor...

1 year ago | 1 answer | 0

Question

How to pick randomly elements from a vector without repetation?

If I have a vector like this : a=[1 2 3 4 5] i know how to do this but my vector is something like: a=[23 46 4 2 5] ...

1 year ago | 1 answer | 0

Question

How can i explain this to matlab?

if a is not an empty vector/cluster then do 'this'

1 year ago | 1 answer | 0

Question

Storing vectors in a cluster?

for i=2:10 a=... end I want to store matrixes as an element of a set for every cycle. I know they can be stored i...

1 year ago | 2 answers | 0

Question

How to modify this code for true result?

The objective is to place some boxes into rooms. Each box has its own volume (given in the 'boxes' matrix) and rooms capacities ...

1 year ago | 1 answer | 0

Question

Why i get the out of bound error in this code?

myset=[1 2 3 4 6]; capacity=6; passedall=[] passed=[] for q = 1:5 q=q+1 capacity=6; passedall...

1 year ago | 1 answer | 0

Question

how to create a matrix which is difference (like in sets) of antoher 2 matrix

example: a=[2 3 4] b=[3] How to create matrix C which is: c=[2 4]

1 year ago | 1 answer | 0