Join multiple two-dimensional chromatograms into a single R object

`join_chromatograms` saves chromatograms in a named list slot. Also, it saves information like metadata and retention times.

Usage

join_chromatograms(x, y, groups, ...)

Arguments

x, y

a GCxGC object, either single or batch chromatograms.

groups

a data.frame containing the metadata. It must have a column named as Names to merge with the imported chromatograms.

...

other GCxGC objects to be merged

Examples

GB08_fl <- system.file("extdata", "08GB.cdf", package = "RGCxGC")
GB09_fl <- system.file("extdata", "09GB.cdf", package = "RGCxGC")
GB08 <- read_chrom(GB08_fl, 5L)
#> Warning: The last 51 signals will be omitted
#> Warning: data length [61051] is not a sub-multiple or multiple of the number of rows [500]
#> Retention time ranges:
#> 1D (min): 7.98 18.16 
#> 2D (sec): 0 5 
#> Acquisition rate: 100 
GB09 <- read_chrom(GB09_fl, 5L)
#> Warning: The last 51 signals will be omitted
#> Warning: data length [61051] is not a sub-multiple or multiple of the number of rows [500]
#> Retention time ranges:
#> 1D (min): 7.98 18.16 
#> 2D (sec): 0 5 
#> Acquisition rate: 100 
join_gc <- join_chromatograms(GB08, GB09)
metadata <- data.frame(Names = c("GB08", "GB09"),
                       Type = c("Control", "Treatment"))
join_metadata <- join_chromatograms(GB08, GB09, groups = metadata)