extract_eic — extract_eic • massprocesser

Extract EICs of some features from some samples.

extract_eic(
  targeted_table,
  object,
  polarity = c("positive", "negative"),
  mz_tolerance = 15,
  rt_tolerance = 30,
  threads = 5,
  add_point = FALSE,
  path = ".",
  group_for_figure = "QC",
  feature_type = c("pdf", "png")
)

Arguments

targeted_table: A data.frame contains the variable_id, mz and rt of features to extract.
object: object from xcms. If you use massprocesser, this should be the xdata3.
polarity: positive or negative.
mz_tolerance: default is 15 ppm.
rt_tolerance: default is 30 ppm.
threads: Number of threads.
add_point: aad points in the EIC or not.
path: Work directory.
group_for_figure: what samples groups are used to extract EICs
feature_type: png of pdf

Value

EICs.

Author

Xiaotao Shen shenxt1990@outlook.com