Contents

• Introduction
• Cookbook
  • A CLASSic Session
  • Reading a spectrum from a formatted input file
  • Exporting a spectrum to a formatted file
  • Building a Datacube from a CLASS File
  • Fitting an HyperFine Structure
    • Assumptions
    • Parameters of the multiplet
    • The fitting procedure
    • Typical Analysis Sequence
  • Subtracting Baseline on Large Datasets
  • Reading/Writing FITS file
    • Exporting CLASS Spectra through FITS
    • Importing FITS spectra into CLASS
  
  
• User manuel
  • Generalities
    • Data and Log Files
    • Observation and Version Number
    • Scan and Subscan Number
    • Entry Number and Index
    • R and T Memories
    • Large Set of Spectra
    • Variables
  • Spectra Line Processing
    • Plotting Spectra
    • Removing Baselines
    • Folding Frequency Switched Spectra
    • Adding Spectra
    • Analyzing profiles
    • Gridding Spectra on a 3-D Data Cube
    • Miscellaneous
  • Continuum and Skydip Processing
    • Continuum
    • Skydip Processing
  • Communication with the outer world
    • Listing Scientifically Valuable Results
    • Making Publishable Quality Figures
    • Importing and Exporting Spectra From and To FITS
  
  
• Developer Manual (16-sep-2015)
  • Internal CLASS Format
    • Contents of one observation
    • File organization
    • File index
  • The Header and Data Sections
    • General Parameters
    • Position information
    • Spectroscopic information (for spectra)
    • Baseline information (for spectra or drifts)
    • Scan numbers of initial observations
    • Default plotting limits
    • Switching information (for spectra)
    • Calibration parameters
    • For Skydips observations. No associated data.
    • Gauss fit results (for spectra or drifts)
    • "Stellar shell" profile fit results (for spectra)
    • Hyperfine structure profile fit results (for spectra)
    • Hyperfine structure absorption profile fit results (for spectra)
    • Continuum drift description (for drifts)
    • Beam-switching parameters (for spectra or drifts)
    • Double gaussian and baseline fit results (for drifts)
    • Herschel Space Observatory (HIFI)
    • Comment Section
    • Data Section
  • Old OTF data format
    • Data Section Descriptor
    • Multiple spectra Data Section
  • CLASS FITS format
    • Simple SPECTRUM Mode
    • BINTABLE Mode
    • Once FITS Always FITS
  
  
• Internal Helps
  • LAS Language Internal Help
    • Language
    • ACCUMULATE
    • ASSOCIATE
    • AVERAGE
    • BASE
    • BOX
    • CATALOG
    • CONSISTENCY
    • COPY
    • DROP
    • DUMP
    • EXTRACT
    • FILE
    • FIND
    • FITS
    • FOLD
    • GET
    • HEADER
    • IGNORE
    • LIST
    • LOAD
    • MERGE
    • MODIFY
    • MULTIPLY
    • NEW_DATA
    • PLOT
    • SAVE
    • SET
    • SHOW
    • SPECTRUM
    • STITCH
    • SWAP
    • TAG
    • TITLE
    • UPDATE
    • WRITE
  • ANALYSE Language Internal Help
    • Language
    • COMMENT
    • DIVIDE
    • DRAW
    • FFT
    • FILL
    • GREG
    • LMV
    • MAP
    • MEMORIZE
    • MODEL
    • NOISE
    • POPUP
    • PRINT
    • REDUCE
    • RESAMPLE
    • RETRIEVE
    • SMOOTH
    • STAMP
    • STRIP
    • TABLE
  • FIT Language Internal Help
    • Language
    • DISPLAY
    • ITERATE
    • KEEP
    • LINES
    • METHOD
    • MINIMIZE
    • RESIDUAL
    • RESULT
    • VISUALIZE
  • MAP Language Internal Help
    • Language
    • XY_MAP
  • DSB2SSB Language Internal Help
    • Language
    • INITIALIZE
    • DECONVOLVE
  • EXPERIMENTAL Language Internal Help
    • Language
    • DIFF
    • FILTER
    • MEDIAN
    • RMS
    • SUBTRACT
    • UNBLANK
    • UV_ZERO
    • VARIABLE
    • WAVELET
  
  
• Index