Syntax:
LinPlot,'filename'
the filename argument is optional. If present, it is a string enclosed in single quotes giving the name of the file in which resides the extracted AOS spectrum (see PlotSpectrum). The file extension should not be given, and is taken to be .AOS.

Example:
LinPlot,which=3,refwhich=2,/fullrange,ytitle='Y-Factor'

Options:
ytitle='title of plot',
add a title to the plot.

/fullrange,
set this switch to plot to the full range in power and frequency

which=n,
n is an integer value telling LinPlot which spectrum to plot from the currently loaded AOS spectra. This option overrides the 'filename' argument.

refwhich=n,
plot referenced to the AOS spectrum specified by the integer value n. The result is the ratio of the two spectra. See example above.

/Tsys,
if this is set, calculate noise temperature. This assumes the data to be plotted is a Y-factor (ie. Cold/Hot). This is normally used along with the refwhich option.

Thot=T,
If a noise temperature is being calculated, this is the hot load temperature in Kelvin. The default value is 291K.

Tcold=T
If a noise temperature is being calculated, this is the cold load temperature in Kelvin. The default value is 111K.