UsageIDL is available as a module:
module load idl
You need 2 files to get started: a data file and a batch file. The batch file contains commands to load the data of the data file into IDL.
Temperature (K) Pressure (mm Hg)
openr, lun, 'Blanco.dat', /Get_LUN
header = Strarr(1)
BData = Fltarr(2,6)
readf, lun, header, Bdata
Next, open the IDL interpreter and run:
idl> temp = reform(Bdata(0,*))
idl> press = reform(Bdata(1,*))
idl> plot, temp, press
This will open a window with a plot of the data in it.