MATLAB: Differences Of The Elements Of A Matrix.

MATLABmatrix

Hi, I have a problem which may be very simple for others but since I am very new to MATLAB I am facing some problem regarding the same.

I have a 128-by-128 matrix. I need to find the differences of the adjacent elements(i.e., 2nd element- 1st element,3rd element- 2nd element…so on),firstly along the rows and secondly along the columns to give two different matrices(using the 'diff'command). Can anyone please help me out in solving this problem?

Thanking You!

Best Answer

doc diff

eg:

H = diff(I,1,2) % differences between columns
V = diff(I) % differences between rows

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MATLAB: Comparing elements of two matrices

Afiltered = setdiff(A, B)

MATLAB: Error: In an assignment A(I) = B, the number of elements in B and I must be the same.

I think it shouldn't be diff(i) but

Diff(i)

There are some further issues with your code; You define

 BatteriLaddning=zeros(8760,1); 
 AntalBatterier=2;
 BatteriKapacitet=7*AntalBatterier;
 EffektKapacitet=2*AntalBatterier;

so BatteriKapacitet=14 and EffektKapacitet = 4. Consider the first if clause

 if (diff(i)>0&BatteriLaddning(i)>=BatteriKapacitet)

This would always be false, because BatteriLaddning(i) is 0 and cannot be >= 14.

Similar for the second clause

   elseif (diff(i)<0&diff(i)>EffektKapacitet)

This will never be entered, because when diff(i) is smaller than zero, it cannot be greater than EffektKapacitet=4.

Best Answer

Related Solutions

MATLAB: Comparing elements of two matrices

MATLAB: Error: In an assignment A(I) = B, the number of elements in B and I must be the same.

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