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IBM watson


25 total contributions since 2018

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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

2

answers

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

2

answers

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

1

answer

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

1

answer

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

1

answer

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

1

answer

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

2 years ago | 2 answers | 0

2

answers

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; ...

2 years ago | 1 answer | 0

1

answer

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...

2 years ago | 1 answer | 0

1

answer

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?

2 years ago | 1 answer | 0

1

answer

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:

2 years ago | 0 answers | 0

0

answers

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] =...

2 years ago | 1 answer | 0

1

answer

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...

2 years ago | 1 answer | 0

1

answer

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 ?

2 years ago | 2 answers | 0

2

answers

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...

2 years ago | 2 answers | 0

2

answers

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...

2 years ago | 1 answer | 0

1

answer

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]

2 years ago | 1 answer | 0

1

answer

Question


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

2 years ago | 2 answers | 0

2

answers

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...

2 years ago | 1 answer | 0

1

answer

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] ...

2 years ago | 1 answer | 0

1

answer

Question


How can i explain this to matlab?
if a is not an empty vector/cluster then do 'this'

2 years ago | 1 answer | 0

1

answer

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...

2 years ago | 2 answers | 0

2

answers

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 ...

2 years ago | 1 answer | 0

1

answer

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...

2 years ago | 1 answer | 0

1

answer

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]

2 years ago | 1 answer | 0

1

answer