Returning minimum row index of an array

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mlam 2015-9-7

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https://ww2.mathworks.cn/matlabcentral/answers/240631-returning-minimum-row-index-of-an-array

评论： mohamed essabir 2020-2-23

I understand that using the size function returns the max number of columns or rows in an array. How would you return the index for the first row or column? Is there a function that does that? For example:

A = [101 101 101;
153 153;
204 205;
255 255]

Using [row,column]=size(A) gives row = 4, column = 3 How would i return row = 1 or column = 1? Because i am trying to get the index for row 1 or column 1 to use in some if statements.

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Varun Pai 2015-9-7

编辑：Varun Pai 2015-9-7

Dear friend,

Your question is little bit confusing. If you want to access the element at row = 1 and column =1, simply use A(1,1). Index of row=1 and column=1 is 1,1.

If you want to get the elements of first row only then you can use A(1,:), If you want to get the elements of first column only then you can use A(:,1).

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