barbiturates {hyperSpec}

Barbiturates Spectra from .spc example files A time series of mass spectra in a list of hyperSpec objects.

Description

Barbiturates Spectra from .spc example files A time series of mass spectra in a list of hyperSpec objects.

Format

The data sets consists of 286 spectra. They are the result of importing the BARBITUATES.SPC example data from Thermo Galactic's spc file format specification.

Author(s)

C. Beleites and Thermo Galactic

References

The raw data is available at http://hyperspec.r-forge.r-project.org/blob/fileio.zip

Examples

barbiturates [1:3]
length (barbiturates)

barb <- collapse (barbiturates, collapse.equal = FALSE)
barb <- orderwl (barb)

plot (barb [1:3], lines.args = list (type = "h"),
      col = matlab.dark.palette (3), stacked = TRUE,
      stacked.args = list (add.factor = .2))

if (require (latticeExtra)){
levelplot (spc ~ .wavelength * z, log (barb), panel = panel.levelplot.points,
   cex = 0.3, col = "#00000000", col.regions = matlab.palette (20))
}

plotc (apply (barb [,, 42.9~43.2], 1, sum, na.rm = TRUE), spc ~ z,
       panel = panel.lines, ylab = expression (I[m/z == 43] / "a.u."))