Maximum function in matlab

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Maximum function in matlab

Help Center Help Center. If A is a vector, max A returns the largest element in A. If A is a matrix, max A treats the columns of A as vectors, returning a row vector containing the maximum element from each column. If A is a multidimensional array, max operates along the first nonsingleton dimension and returns an array of maximum values. If the largest value occurs multiple times, the index of the first occurrence is returned. The output, M , is a row vector that contains the largest elements from each column of A. Vector I contains the indices to the minimum elements in M. C contains the largest elements from each pair of corresponding elements in A and B. The function finds the largest element of a complex vector by taking the element with the largest magnitude. In vector a , the largest elements, at position 2 and 3 , have a magnitude of 6. The max function returns the largest element in output x and the index of that element in output y. Although the elements at index 2 and 3 have the same magnitude, the index of the first occurrence of that value is always returned. Input fi array, specified as a scalar, vector, matrix, or multidimensional array. The dimensions of A and B must match unless one is a scalar.

You are chasing the wrong problem. It hasn't been so for quite some time, but in my experience, this iterative approach had a significant speed advantage with larger N-D arrays in older versions 2x-3x as fast as max A : for maximum function in matlab arrays I was using. Toggle Main Navigation.

Help Center Help Center. If A is a vector, then max A returns the maximum of A. If A is a matrix, then max A is a row vector containing the maximum value of each column of A. If A is a multidimensional array, then max A operates along the first dimension of A whose size is greater than 1 , treating the elements as vectors. The size of M in this dimension becomes 1 , while the sizes of all other dimensions remain the same as in A. If A is an empty array whose first dimension has zero length, then M is an empty array with the same size as A.

Help Center Help Center. Computing the first derivative of an expression helps you find local minima and maxima of that expression. For example, create a rational expression where the numerator and the denominator are polynomial expressions. Plotting this expression shows that it has horizontal and vertical asymptotes, a local minimum between -1 and 0, and a local maximum between 1 and 2. By default, when you operate on this expression, results can include both real and imaginary numbers. If you are interested in real numbers only, you can set the permanent assumption that x belongs to the set of real numbers. This allows you to avoid complex numbers in the solutions and it also can improve performance. To find a horizontal asymptote, compute the limit of f for x approaching positive and negative infinities. To find a vertical asymptote of f , find the roots of the polynomial expression that represents the denominator of f.

Maximum function in matlab

Help Center Help Center. If A is a vector, max A returns the largest element in A. If A is a matrix, max A treats the columns of A as vectors, returning a row vector containing the maximum element from each column. If A is a multidimensional array, max operates along the first nonsingleton dimension and returns an array of maximum values. If the largest value occurs multiple times, the index of the first occurrence is returned. The output, M , is a row vector that contains the largest elements from each column of A.

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See Also mean median min sort. Consider these two functions, each having one peak:. You cannot use max with symbolic variables. Unable to complete the action because of changes made to the page. This is a script calculating orthographic similarity between two words. The size M,dim is 1 , while the sizes of all other dimensions remain the same, unless size A,dim is 0. Plot Expression with Maximum Function. Other MathWorks country sites are not optimized for visits from your location. Answers Support MathWorks. Specifying a second input array as a character array gives a warning and will generate an error in a future release. Do you have any suggestions how can change it to work even in such cases? Toggle Main Navigation. Ra: Specify missing value condition Omit or include all missing values in the input arrays when computing the maximum value by using the "omitmissing" or "includemissing" options. I don't remember if that advantage still existed in Rx, but it did in Rb.

Help Center Help Center. If A is a vector, then max A returns the maximum of A.

Choose a web site to get translated content where available and see local events and offers. Trial software. Input Arguments collapse all A — Input fi array scalar vector matrix multidimensional array. Sign in to answer this question. Maximum elements from A or B , returned as a symbolic expression, vector, or matrix of symbolic expressions. You may receive emails, depending on your communication preferences. Data Types : fi single double int8 int16 int32 int64 uint8 uint16 uint32 uint For previous releases, use:. Select a Web Site Choose a web site to get translated content where available and see local events and offers. If no value is specified, then the default is the first array dimension whose size does not equal 1. You are chasing the wrong problem. Then max A,[],[1 2] returns a 1-byby-3 array whose elements are the maximums computed over each page of A.