To find array elements that meet a condition use find in conjunction with a relational expression.
Find a value in an array matlab.
For example find x 5 returns the linear indices to the elements in x that are less than 5.
You can perform these tasks using a combination of the relational and logical operators.
This example shows how to filter the elements of an array by applying conditions to the array.
I know that number for example 5 is an element in array x but i don t know it s index.
For instance you can examine the even elements in a matrix find the location of all 0s in a multidimensional array or replace nan values in data.
Using length is a really bad idea.
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The linear index of 5 is 4 not 5.
Linearindices find a 8 linearindices 2 3.
For example let s create a two dimensional array a.
Ismember will return an array of 1 or 0 depending on if the cell value there is or isn t the value you re searching for.
You can perform these tasks using a combination of the relational and logical operators.
In python i can use.
But if you want to extract row and column you just need to adapt the code jan gave you.
Generally to generate a multidimensional array we first create a two dimensional array and extend it.
To directly find the elements in x that satisfy the condition x 5 use x x 5 avoid function calls like x find x 5 which unnecessarily use find on a logical matrix.
An array having more than two dimensions is called a multidimensional array in matlab.
Octave 9 x x 2 2 3 4 3 2 6 4 8 octave 10 ismember x 4 ans 0 1 0 0 0 1 0 0 0 and then you can use find and ind2sub to get the array indicies of the 1s.
This example shows how to filter the elements of an array by applying conditions to the array.
Multidimensional arrays in matlab are an extension of the normal two dimensional matrix.
Whoever wrote that template has done a lot of beginners a disservice by teaching them to use a function that would be better replaced by numel or size in this case numel would be much better and would actually loop over all elements of the input array.
For instance you can examine the even elements in a matrix find the location of all 0s in a multidimensional array or replace nan values in data.
