# How do you find the local maxima of a matrix in Matlab?

## How do you find the local maxima of a matrix in Matlab?

TF = islocalmax( A ) returns a logical array whose elements are 1 ( true ) when a local maximum is detected in the corresponding element of an array, table, or timetable. TF = islocalmax( A , dim ) specifies the dimension of A to operate along. For example, islocalmax(A,2) finds local maxima of each row of a matrix A .

How do you find the maximum peak value in Matlab?

Use findpeaks with default settings to find the peaks of the signal and their locations. [pks,locs] = findpeaks(PeakSig,x); Plot the peaks using findpeaks and label them. Sort the peaks from tallest to shortest.

### How do you find the maximum of a plot in Matlab?

1. maxF = max(F); % Find max value over all elements.
2. indexOfFirstMax = find(F == maxF, 1, ‘first’); % Get first element that is the max.
3. % Get the x and y values at that index.
4. maxY = F(indexOfFirstMax);
5. maxX = x(indexOfFirstMax);

How do you find the minimum value in Matlab?

M = min( A ) returns the minimum elements of an array.

1. If A is a vector, then min(A) returns the minimum of A .
2. If A is a matrix, then min(A) is a row vector containing the minimum value of each column.

## How do you find the maximum value of a plot?

Again, using this graph, you can see that the maximum point of the graph is at y = 5. The second way to determine the maximum value is using the equation y = ax2 + bx + c. If your equation is in the form ax2 + bx + c, you can find the maximum by using the equation: max = c – (b2 / 4a).

How do you find the minimum point in MATLAB?

### How do I find the local maxima of a matrix?

For example, islocalmax (A,2) finds local maxima of each row of a matrix A. TF = islocalmax ( ___,Name,Value) specifies additional parameters for finding local maxima using one or more name-value pair arguments.

How to get the maximum value from an array in MATLAB?

The max () function in MATLAB gets the maximum value from a given array or matrix. In the case of an array, it will return the value of the maximum value present in that array along with its index.

## How do you get maximum peak width in MATLAB?

Maximum peak width, specified as the comma-separated pair consisting of ‘MaxPeakWidth’ and a positive real scalar. Use this argument to select only those peaks that have widths of at most ‘MaxPeakWidth’. If you specify a location vector, x , then ‘MaxPeakWidth’ must be expressed in terms of x.

How to plot the maxima of a vector of data?

Compute the local maxima of a vector of data and their prominence, and then plot them with the data. Compute only the most prominent maximum in the data by specifying a minimum prominence requirement. Input data, specified as a vector, matrix, multidimensional array, table, or timetable. Operating dimension, specified as a positive integer scalar.