Bioinformatics Toolbox™

std (DataMatrix) - Return standard deviation values in DataMatrix object

Syntax

S = std(DMObj)
S = std(DMObj, Flag)
S = std(DMObj, Flag, Dim)
S = std(DMObj, Flag, Dim, IgnoreNaN)

Arguments

Return Values

Description

S = std(DMObj) returns the standard deviation values of the elements in the columns of a DataMatrix object, treating NaNs as missing values. The data is normalized using a sample size of N – 1, where N = the number of elements in each column. S is a row vector containing the standard deviation values for elements in each column in DMObj.

S = std(DMObj, Flag) specifies how to normalize the data. If Flag = 0, normalizes using a sample size of N – 1. If Flag = 1, normalizes using a sample size of N. N = the number of elements in each column or row, as specified by Dim. For more information on the normalization equations, see the MATLAB function std. Default Flag = 0.

S = std(DMObj, Flag, Dim) returns the standard deviation values of the elements in the columns or rows of a DataMatrix object, as specified by Dim. If Dim = 1, returns S, a row vector containing the standard deviation values for elements in each column in DMObj. If Dim = 2, returns S, a column vector containing the standard deviation values for elements in each row in DMObj. Default Dim = 1.

S = std(DMObj, Flag, Dim, IgnoreNaN) specifies if NaNs should be ignored. IgnoreNaN can be true (default) or false.

See Also

Bioinformatics Toolbox function: DataMatrix (object constructor)

Bioinformatics Toolbox object: DataMatrix object

Bioinformatics Toolbox methods of a DataMatrix object: mean, median, var

sortrows (DataMatrix)

subtree (phytree)