mean2

Average or mean of matrix elements

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Syntax

B = mean2(A)

Description

B = mean2(A) computes the mean of all values in array A.

Examples

Compute Mean of an Image

Open Live Script

Read an image into the workspace.

I = imread('liftingbody.png');

Compute the mean.

meanval = mean2(I)

meanval = 
140.2991

Input Arguments

`A` — Input data
numeric array | logical array

Input data, specified as a numerical or logical array.

Data Types: single | double | int8 | int16 | int32 | int64 | uint8 | uint16 | uint32 | uint64 | logical

Output Arguments

`B` — Mean
numeric scalar

Mean of input data, returned as a numeric scalar. If the data type of A is single, then the data type of B is also single. Otherwise, the data type of B is double.

Data Types: single | double

Extended Capabilities

C/C++ Code Generation
Generate C and C++ code using MATLAB® Coder™.

mean2 supports the generation of C code (requires MATLAB^® Coder™). For more information, see Code Generation for Image Processing.

GPU Code Generation
Generate CUDA® code for NVIDIA® GPUs using GPU Coder™.

GPU Arrays
Accelerate code by running on a graphics processing unit (GPU) using Parallel Computing Toolbox™.

This function fully supports GPU arrays. For more information, see Image Processing on a GPU.

Version History

Introduced before R2006a

See Also

std2 | corr2 | mean | std