| Re: Overwriting the terminal output line [message #29322] |
Thu, 14 February 2002 11:07  |
Craig Markwardt
Messages: 1869
Registered: November 1996
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Senior Member |
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Kenneth Bowman <k-bowman@null.tamu.edu> writes:
> Does anyone know how to overwrite the terminal output line?
>
>
> The following does not do what I want:
>
> IDL> FOR i = 0, 10 DO PRINT, i, FORMAT = "($, 'i = ' ,I4, T1)"
> i = 0i = 1i = 2i = 3i = 4i = 5i = 6i = 7i = 8i = 9i = 10IDL>
>
> The $ supresses the newline, but T1 does not reposition the
> pointer to the beginning of the line.
...
Hi Ken--
Does something like STATUSLINE help you? [ Assumes you are running on
an ANSI-like terminal. ] I use ANSI escape characters to control the
cursor position, so it's not portable to every type of terminal. As I
recall, I couldn't find a simply way to reposition the cursor using
FORMAT statements.
Craig
http://cow.physics.wisc.edu/~craigm/idl/idl.html (under Miscellaneous)
--
------------------------------------------------------------ --------------
Craig B. Markwardt, Ph.D. EMAIL: craigmnet@cow.physics.wisc.edu
Astrophysics, IDL, Finance, Derivatives | Remove "net" for better response
------------------------------------------------------------ --------------
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| Re: Overwriting the terminal output line [message #29401 is a reply to message #29322] |
Fri, 15 February 2002 11:05  |
K. Bowman
Messages: 330
Registered: May 2000
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Senior Member |
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In article <ony9hv286w.fsf@cow.physics.wisc.edu>,
Craig Markwardt <craigmnet@cow.physics.wisc.edu> wrote:
> Does something like STATUSLINE help you? [ Assumes you are running on
> an ANSI-like terminal. ] I use ANSI escape characters to control the
> cursor position, so it's not portable to every type of terminal. As I
> recall, I couldn't find a simply way to reposition the cursor using
> FORMAT statements.
Thanks, Craig. STATUSLINE works fine on our unix boxes (vt100).
I added a blank "PRINT" in the /CLOSE block to ensure that
upon close the IDL prompt does not over-write the status line.
if keyword_set(close) AND n_elements(statusline_unit) GE 1 then begin
if statusline_unit(0) LT 0 then return
free_lun, statusline_unit(0)
statusline_unit = -1L
PRINT
return
endif
I doesn't work on my Mac however (no surprise). Maybe when the OS X
(unix-like) version is available.
Ken
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| Re: Overwriting the terminal output line [message #29407 is a reply to message #29322] |
Fri, 15 February 2002 08:53 |
weitkamp
Messages: 33
Registered: October 1998
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Member |
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Hi Ken and Craig,
Craig Markwardt <craigmnet@cow.physics.wisc.edu> wrote in message news:<ony9hv286w.fsf@cow.physics.wisc.edu>...
>
> Does something like STATUSLINE help you? [ Assumes you are running on
> an ANSI-like terminal. ] I use ANSI escape characters to control the
> cursor position, so it's not portable to every type of terminal. As I
> recall, I couldn't find a simply way to reposition the cursor using
> FORMAT statements.
I don't know how STATUSLINE works or what can be termed "simple", but
the following small modification to Ken's code (putting a CR in the
format string) works on VT-52 compatible terminals (is that the same
as ANSI?). I think it fails on Windows though (because the CR makes a
new line there). Here it is:
FOR i = 0, 10 DO PRINT, i, FORMAT = '($, "i = " ,I4,
"'+STRING(13B)+'")'
Timm
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