| Re: off the box and already in trouble [message #10568] |
Sun, 14 December 1997 00:00 |
davidf
Messages: 2866
Registered: September 1996
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Senior Member |
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Aldo P. Salzberg (salzberg.1@postbox.acs.ohio-state.edu) writes:
> I bought the Windows 95 idl student version and installed it on drive D:\
> ratherthan C:\. I notice that, following the student manual, when I type
> IDL> file = filepath('surface.dat', subdir=['examples',$'data'])
> everything is cool, but as soon as I try to type
> IDL> openr, lun, file, /get_lun
> It returns an error sometimes for file, which it says its undefined,
> sometimes for lun. It appears the interpreter doesn't recognize the
> path.
Leave out the "$" in the command above. That is a line
continuation character and IDL ignores anything to the right
of the character on the line, thinking that the line will
be continued on the next line. You see these marks often
in documentation because there is limited space to write
commands. When you are working, however, leave the line
continuation characters out and type the whole command
on a single line.
The correct command is this:
file = filepath('surface.dat', subdir=['examples','data'])
Cheers,
David
-----------------------------------------------------------
David Fanning, Ph.D.
Fanning Software Consulting
E-Mail: davidf@dfanning.com
Phone: 970-221-0438
Coyote's Guide to IDL Programming: http://www.dfanning.com/
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