Commands and functions have parameters and keywords. The keywords are named in the calling sequence:
Here xrange and color are explicitly set to their values.
keyword is boolean (if = 1, the plot will be in log scale on the Y axe, else linear scale will be
Keywords can be abreviate:
plot , x , y , xrange=[0,200]
The help can be called from outside idl, under Unix, by idlhelp, or within an IDL session, by:
This help is a Hypertext manual pages and most of what you need is inside.
If you need information on a variable (like: is toto a double precision real or not?), you can examine it by:
IDL> help , toto
When you are finished:
IDL courses C. Morisset © 2004 IA/UNAM V 2.2