Find in matlab

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Help Center Help Center. If X is a vector, then find returns a vector with the same orientation as X. If X is a multidimensional array, then find returns a column vector of the linear indices of the result. The default for direction is 'first' , which finds the first n indices corresponding to nonzero elements. Use the logical not operator on X to locate the zeros. Find the first five elements that are less than 10 in a 4-by-4 magic square matrix. For instance, find the element equal to 13 in a 1-by vector of odd integers.

Find in matlab

The find function in MATLAB is used to find the indices and values of non-zero elements or the elements which satisfy a given condition. The relational expression can be used in conjunction with find to find the indices of elements that meet the given condition. It returns a vector that contains the linear indices. Using liner index a multidimensional array can be accessed using a single subscript. MATLAB treats the array as a single column vector with each column appended to the bottom of the previous column. Note: k will be of same orientation as X if X is a vector and if X is a multidimensional array then k will be a column vector which will hold linear indices. Example 1: Below code will return the indices of non-zero elements in a 1-D array. Example 2: Below code will return the first 2 indices of elements where the element will be greater than 3. Example 3: Below code will return the last 2 row and column indices of elements that are greater than 3. So, A 2, 3 and A 3, 3 are the last elements that are greater than 3. We got 2, 3 and 3, 3 as output not 3,2 and 3, 3 because MATLAB treats the array as a single column vector with each column appended to the bottom of the previous column. Example 4: Below code will return indices of all the zero elements. Skip to content.

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You can use indexing to access the elements of the array. To find the index of the element in the array, you can use the find function. Using the find function you can find the indices and the element from the array. The find function returns a vector containing the data. Note: If the array contains duplicates then find X function will return all the indices of that integer. When the array contains duplicate values the find function will print all the indices of that corresponding element. You can also find the index of the elements from both directions in the array.

MATLAB, a powerful numerical computing environment, offers a plethora of functions to manipulate, analyze, and visualize data. Among these functions, the find function stands out as a versatile tool for locating the indices of non-zero elements within arrays and matrices. It is a versatile function that can be applied to vectors, matrices, and multidimensional arrays. For vectors, a column vector indices is returned, containing the indices of non-zero elements. For matrices, two vectors, i and j , can be returned, representing row and column indices, respectively. In this example, we have a vector [1, 2, 0, 4, 0, 6].

Find in matlab

Help Center Help Center. This example shows how to filter the elements of an array by applying conditions to the 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. You can perform these tasks using a combination of the relational and logical operators. To apply a single condition, start by creating a 5-by-5 matrix that contains random integers between 1 and Reset the random number generator to the default state for reproducibility.

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Create Improvement. Search MathWorks. Extended Capabilities Tall Arrays Calculate with arrays that have more rows than fit in memory. Do you want to open this example with your edits? Improved By :. Create a 6-by-6 magic square matrix with all of the odd-indexed elements equal to zero. The default for direction is 'first' , which finds the first n indices corresponding to nonzero elements. This function fully supports GPU arrays. MATLAB treats the array as a single column vector with each column appended to the bottom of the previous column. Store the result in B. For instance, find the element equal to 13 in a 1-by vector of odd integers. Select the China site in Chinese or English for best site performance. Do you want to open this example with your edits?

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You have a modified version of this example. Even when you provide the output vector k , the output is not fixed-size because the output can contain fewer than k elements. Specify two outputs to return the row and column subscripts to the elements. Finally, find the elements in A that are less than 9 and even numbered and not equal to 2. The first instance is X 2,1 , which is 8. The result is a list of the elements in A that satisfy both conditions. Examples collapse all Zero and Nonzero Elements in Matrix. Reset the random number generator to the default state for reproducibility. Apply a Single Condition To apply a single condition, start by creating a 5-by-5 matrix that contains random integers between 1 and The sub2ind and ind2sub functions are useful in converting between subscripts and linear indices. Save Article.