MATLAB: Indexing into an Array in a For Loop is Off by 1

indexingMATLAB

I am trying to index these values into the array for plotting but my results and my plot are off by one value?

Best Answer

Absolutely guessing here. Perhaps it is because your ‘x’ value begins at 0?

Array indices in MATLAB are integers greater than 0.

Related Solutions

MATLAB: Index exceeds array bounds error

uppLim = length(value) - 1;

Should solve your problem. Oh and drop the

while value

which is basically an endless loop because value doesn't change inside the loop. it's also not necessary because the

for i = 1:uppLim

doesn't enter the loop when value is empty.

I would also ditch the for loop, and vectorize it

list = input('Enter a list of positive intergers separated by commas:', 's');
value = strsplit(list, ','); value = str2double(value);
x = sum(value([false diff(value) > 0]));
disp(['The sum of the numbers = : ' num2str(x)]);

MATLAB: Array indices must be positive integers or logical values

The problem:

for k=0:M-1

The solution:

for k=1:M

In MATLAB, subscript indices begin at 1, not 0, and are defined as integers greater than 0.

It is more efficient to do this without the loop:

H = cumsum(h* exp(-1i*2*pi*fd));

or simply:

H = sum(h* exp(-1i*2*pi*fd));

Best Answer

Related Solutions

MATLAB: Index exceeds array bounds error

MATLAB: Array indices must be positive integers or logical values

Related Question