plot the PCA for multiple samples — plotpca • enviGCMS

plot the PCA for multiple samples

Usage

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

Arguments

data: data row as peaks and column as 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: default pch would be the first character 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

data(list)
plotpca(list$data, lv = as.character(list$group$sample_group))