ratio_sd: Standard deviation of a ratio of two means

In tsoleary/proteomixr: Label-free quantitative proteomics & D3-Leu turnover

Description

creates a vector with the sd of the ratio for each peptide using a Taylor Expansion to get the sd of the ratio of two means

Usage

ratio_sd(dat, ratio, sd1, med1, sd2, med2)

Arguments

dat	a data frame with peptide level data as rows and samples in columns
ratio	character string of ratio column name
sd1	character string of sd of group1 column name
med1	character string of average of group1 column name
sd2	character string of sd of group2 column name
med2	character string of average of group2 column name

Examples

df$ratio_sd <- ratio_sd(df, "ratio", "group1_sd",
                        "group1_med", "ctrl_sd", "ctrl_med")

tsoleary/proteomixr documentation built on July 19, 2019, 8:37 a.m.