For example, suppose we want to find indices of all the elements greater than a certain number. We can use all kinds of conditional statements inside this function. If the same element is present at different indices, the find() function will return all the indices where the element is present. For example, if we want to find the index of a single element, we can use the equal operator inside the find() function. To find indices of elements, we need to define a condition inside the find() function. The find() function is used to find indices and values of elements in an array or matrix. To find the index of a value in a given array, we can use the find() function. In an array, elements are placed on certain indexes starting from 1 and so on. Find Index of Value in Array Using find() Function in MATLAB Here we discuss the Introduction to MATLAB Indexing and its different Examples as well as its input and output.This tutorial will discuss finding the index of a value in an array using the find() function in MATLAB. As an additional feature, indexing can also be used to compare values of arrays. We can use indexing to obtain the value present at any desired location in an array. In this article, we have learnt how the indexing works in MATLAB. For the values in ‘X’, which are greater than ‘Y’, the output array has a ‘0’. 0 showing value in X is not less than Y at that particular cell and 1 showing that value at X is less than Y.Īs we can clearly see in the output above, we have obtained a ‘1’ for all values in ‘X’ which are less than corresponding values in ‘Y’. X = Y = We will pass the condition X < Y, to find out the elements in X, which are less than elements in Y.The output, in this case, will be an array of 0s and 1s. In the scenario where we want to know which all elements of an array X are greater than or less than another array Y, we can use this feature of indexing.Īll we need to do is pass the ‘’ sign between these 2 arrays as per our requirement. Let us understand how this can be achieved. It is also possible to index arrays based on logical operators. In the next scenario, let us assume that we need to get elements from the 1 st row till the 3 rd row, and from the 2 nd column till the 3 rd column.įor this purpose, we will specify the index range that we are looking for and will separate row and column ranges by a ‘colon’. All we did is passed the indices of required elements with the help of a vector to MATLAB. For our understanding, let us try to get the 3rd and 4th element of 3rd row.Īs we can clearly see in the output, we are able to get the 3 rd and 4 th elements of the 3 rd row, i.e, 11 and 2. We will use the same array as above for this example. Let us now take the scenario where we want to reference more than one element of a row. 7 is selected from the input array Example #2 X = Īs we can clearly see in the output, only the value present at position (2, 3), i.e. This is how our input and output will look like in MATLAB console: The Output that we obtain will be a single value present at the position (2, 3) in the array X. The Syntax that we will use in MATLAB is: For this example, let us try to find out the cell at position (2, 3).
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