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The text was updated successfully, but these errors were encountered:
I documented a possible interface between Spectra objects and tables here.
> sciex_file <- dir(system.file("sciex", package = "msdata"), full.names = TRUE) > sciex <- Spectra(sciex_file, backend = MsBackendMzR()) > sciex ## object of class Spectra MSn data (Spectra) with 1862 spectra in a MsBackendMzR backend: msLevel rtime scanIndex <integer> <numeric> <integer> 1 1 0.280 1 2 1 0.559 2 3 1 0.838 3 4 1 1.117 4 5 1 1.396 5 ... ... ... ... 1858 1 258.636 927 1859 1 258.915 928 1860 1 259.194 929 1861 1 259.473 930 1862 1 259.752 931 ... 33 more variables/columns. file(s): 20171016_POOL_POS_1_105-134.mzML 20171016_POOL_POS_3_105-134.mzML > asDataFrame(sciex, i = 1:3, spectraVariables(sciex)[1:3]) DataFrame with 3707 rows and 5 columns mz intensity msLevel rtime acquisitionNum <numeric> <numeric> <integer> <numeric> <integer> 1 105.043 0 1 0.28 1 2 105.045 412 1 0.28 1 3 105.046 0 1 0.28 1 4 107.055 0 1 0.28 1 5 107.057 412 1 0.28 1 ... ... ... ... ... ... 3703 133.984 0 1 0.838 3 3704 133.985 132 1 0.838 3 3705 133.987 0 1 0.838 3 3706 133.989 132 1 0.838 3 3707 133.990 0 1 0.838 3
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Also note that the functions that operate on Spectra objects can be piped:
Spectra
x |> filterMsLevel(2L) |> filterRt(500, 750) |> ....
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No description provided.
The text was updated successfully, but these errors were encountered: