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Yes, COLAXES=1 COLDATA='[2,3]' seem to work. The main problem is that figaro doesn't really know that the axes values are angstroms. It just puts them in the AXIS array. Ideally for better compatibility with other applications the wavelength would be stored in a proper AST Frameset to allow proper alignment with other data and nice rendering of plots. David - is there an easy way to convert the AXIS wavelength data into an AST Spectrum object? On Thu, Jul 11, 2013 at 12:53 PM, Peter W. Draper <[log in to unmask]>wrote: > Hi Robert, > > you need to use the FIGARO ascin command. That will read just these sort > of text files. > > Regards, > > Peter. > > > > On Thu, 11 Jul 2013, rcs wrote: > > I have a set of echelle spectra, which have been reduced for me to 1d >> form, using IRAF, but have been provided to me only as text files, with >> three columns: wavelength, flux, error (w, f, e). These files were produced >> as part of the stitching together of the various echelle orders, and I have >> a horrid feeling that there are no IRAF originals. The person concerned is >> currently incommunicado.... >> >> I have tried using the CONVERT facility, ascii2ndf, but I cannot work out >> what to use as the SHAPE parameter - when I use the number of rows, the >> conversion is done, but not correctly: hdstrace reveals that it has taken >> the data in the order w, f, e and stopped one-third of the way through the >> file. How can I get ascii2ndf to recognise that the three rows are >> different types of data? >> >> I attach a sample data file. >> >> Robert >> >> -- >> Dr Robert C Smith 01273 678974 >> Emeritus Reader in Astronomy Pevensey III, 4C1 >> Astronomy Centre, Dept of Physics & Astronomy >> University of Sussex, Falmer, Brighton BN1 9QH >> [log in to unmask] >> http://astronomy.sussex.ac.uk/**~rcs/rcs.html<http://astronomy.sussex.ac.uk/~rcs/rcs.html> >> >> >> ---- >> Starlink User Support list >> For list configuration, including subscribing to and unsubscribing from >> the list, see >> https://www.jiscmail.ac.uk/**cgi-bin/webadmin?A0=STARLINK<https://www.jiscmail.ac.uk/cgi-bin/webadmin?A0=STARLINK> >> >> > -- > Peter W. Draper, http://astro.dur.ac.uk/~**pdraper<http://astro.dur.ac.uk/~pdraper> > > > ---- > Starlink User Support list > For list configuration, including subscribing to and unsubscribing from > the list, see > https://www.jiscmail.ac.uk/**cgi-bin/webadmin?A0=STARLINK<https://www.jiscmail.ac.uk/cgi-bin/webadmin?A0=STARLINK> > ---- Starlink User Support list For list configuration, including subscribing to and unsubscribing from the list, see https://www.jiscmail.ac.uk/cgi-bin/webadmin?A0=STARLINK