faahko {faahKO} | R Documentation |
xcmsSet
object containing quantitated LC/MS peaks from the
spinal cords of 6 wild-type and 6 FAAH knockout mice. The data is a
subset of the original data from 200-600 m/z and 2500-4500 seconds.
It was collected in positive ionization mode.
data(faahko)
The format is:
Formal class 'xcmsSet' [package "xcms"] with 8 slots ..@ peaks : num [1:4776, 1:11] 200 201 205 206 207 ... ..@ groups : logi[0 , 0 ] ..@ groupidx : list() ..@ sampnames: chr [1:12] "ko15" "ko16" "ko18" "ko19" ... ..@ sampclass: Factor w/ 2 levels "KO","WT": 1 1 1 1 1 1 2 2 2 2 ... ..@ rt :List of 2 .. ..$ raw :List of 12 .. ..$ corrected:List of 12 ..@ filepaths : chr [1:12] ... ..@ profinfo :List of 2 .. ..$ method: chr "bin" .. ..$ step : num 0.1
The corresponding raw NetCDF files are located in the cdf
subdirectory of this package.
http://dx.doi.org/10.1021/bi0480335
Saghatelian A, Trauger SA, Want EJ, Hawkins EG, Siuzdak G, Cravatt BF. Assignment of endogenous substrates to enzymes by global metabolite profiling. Biochemistry. 2004 Nov 16;43(45):14332-9.
## The directory with the NetCDF LC/MS files cdfpath <- file.path(.find.package("faahKO"), "cdf") cdfpath list.files(cdfpath, recursive = TRUE) if (require(xcms)) { ## xcmsSet Summary show(faahko) ## Access raw data file ko15 <- xcmsRaw(filepaths(faahko)[1], profmethod = "bin", profstep = 0.1) ko15 }