enviGCMS (version 0.5.7)

plotpca: plot the PCA for multiple samples

Description

plot the PCA for multiple samples

Usage

plotpca(data, lv = NULL, index = NULL, center = T, scale = T,
  xrange = NULL, yrange = NULL, pch = NULL, ...)

Arguments

data

mzrt profile with row peaks and column samples

lv

group information

index

index for selected peaks

center

parameters for PCA

scale

parameters for scale

xrange

x axis range for return samples, default NULL

yrange

y axis range for return samples, default NULL

pch

deault pch would be the first charactor of group information or samples name

...

other parameters for `plot` function

Value

if xrange and yrange are not NULL, return file name of all selected samples on 2D score plot

Examples

# NOT RUN {
data(list)
plotpca(list$data, lv = as.character(list$group))
# }