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Re: suppressing carriage return in PRINT [message #30575]

Tue, 07 May 2002 18:47

Craig Markwardt
Messages: 1869
Registered: November 1996

Senior Member

Kenneth Mankoff <mankoff@snoe.colorado.edu> writes:

> Chris O'Dell <odell@cmb.physics.wisc.edu> writes:
>
>> This should be really easy. How do you print something (to the normal
>> print window in IDL) without a carriage return?
>
> Use the Craig Markwardt routine: STATUSLINE
>
> Craig: Is there any chance you can get this to work in EMACS? Or you
> could give me some pointers how to modify it? I know
> its not vt100 and therefore a whole different beast, but I love the
> routine and am sometimes forced to use x-terms just because nothing
> shows up in emacs.

Ooops, I check in for the day and see myself being referred to. Now I
know what it's like to be David :-)

Ken, I would love to have STATUSLINE work in more terminals. It's a
very simple little doo-dad, which I use all the time. All it does is
use the VT100-style screen addressing escape-codes to position the
cursor at the desired location. For it to work right two things need
to happen: (a) somehow STATUSLINE needs to know what terminal it is
on, and (b) it needs to know how to position the cursor. Since EMACS
uses a "dumb" terminal I do not think this will work. [ I just tried
this using STATUSLINE, /ENABLE. ] Same probably goes for the Windows
IDE.

Comments?
Craig

--
------------------------------------------------------------ --------------
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: suppressing carriage return in PRINT [message #30579 is a reply to message #30575]

Tue, 07 May 2002 14:24

Paul Van Delst[1]
Messages: 1157
Registered: April 2002

Senior Member

Chris O'Dell wrote:
>
> Thanks Kenneth, Paul, and David.
>
> I realized via a simple test that the '($)' format qualifier would
> normally solve my problem, but for my particular calculation (involving
> a lot of matrix multiplies), for some reason the print procedure gets
> "behind" the loop, and if you use that qualifier, nothing gets printed
> until after the loop has been completed. I'm willing to bet 5 lattes
> that it wouldn't happen in linux/unix. I'm going to try out David's
> cool widget program.

That's similar behaviour I see in some Fortran output on some OSes - *particularly* unix
(good ol' VAX VMS did what I wanted....). The suppressed output doesn't get printed to
screen until a new line is begun. Sort of like flushing buffers and whatnot. I don't think
it's an IDL thing, I think it's an OS thing.

paulv

p.s. You can send me the 5 lattes in the mail. Oh, and no foam thanks. :o)

--
Paul van Delst Religious and cultural
CIMSS @ NOAA/NCEP/EMC purity is a fundamentalist
Ph: (301)763-8000 x7274 fantasy
Fax:(301)763-8545 V.S.Naipaul

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Re: suppressing carriage return in PRINT [message #30580 is a reply to message #30579]

Tue, 07 May 2002 14:06

Christopher W. O'Dell is currently offline

Christopher W. O'Dell
Messages: 20
Registered: February 2001

Junior Member

Thanks Kenneth, Paul, and David.

I realized via a simple test that the '($)' format qualifier would
normally solve my problem, but for my particular calculation (involving
a lot of matrix multiplies), for some reason the print procedure gets
"behind" the loop, and if you use that qualifier, nothing gets printed
until after the loop has been completed. I'm willing to bet 5 lattes
that it wouldn't happen in linux/unix. I'm going to try out David's
cool widget program.

In some ways, PASCAL in 1989 was much better than IDL today.

Chris

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Re: suppressing carriage return in PRINT [message #30585 is a reply to message #30580]

Tue, 07 May 2002 10:54

David Fanning
Messages: 11724
Registered: August 2001

Senior Member

Kenneth Mankoff (mankoff@snoe.colorado.edu) writes:

> NOTE that one of these threads also mentions David Fannings "SHOW_PROGRESS" routine, a very
> fancy and cross-platform way that may solve your problem.

You can find the article here, if you are interested:

http://www.dfanning.com/widget_tips/show_progress.html

Cheers,

David
--
David W. Fanning, Ph.D.
Fanning Software Consulting
Phone: 970-221-0438, E-mail: david@dfanning.com
Coyote's Guide to IDL Programming: http://www.dfanning.com/
Toll-Free IDL Book Orders: 1-888-461-0155

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Re: suppressing carriage return in PRINT [message #30588 is a reply to message #30585]

Tue, 07 May 2002 10:33

Kenneth Mankoff
Messages: 42
Registered: August 1999

Member

Chris O'Dell <odell@cmb.physics.wisc.edu> writes:

>> Use the Craig Markwardt routine: STATUSLINE
>
> Doesn't work in Windows, unfortunately. Neither does someone else's
> suggestion of opening my own window with a command like:
>
> openw, lun, filepath(/terminal), /get_lun
>
> (this gives you the error message):
> % FILEPATH: No terminal device available with IDLde (GUI) interface
>
> Any other ideas? Btw, i'm using 5.4.

Here are past threads on this topic, with hacks, kludges, and code-snippets
included. Most of these threads end with the statement "use STATUSLINE", so
I guess its usually us UNIX/Linux users discussing this...

http://groups.google.com/groups?hl=en&frame=right&th =efb21f4bdf4861c5&seekm=onsnfayyxh.fsf%40cow.physics.wis c.edu#link1

http://groups.google.com/groups?hl=en&frame=right&th =f440fd383be99eaa&seekm=on4s6l217l.fsf%40cow.physics.wis c.edu#link1

http://groups.google.com/groups?hl=en&frame=right&th =8fbbeb12a12eed89&seekm=k-bowman-23DD70.13052715022002%4 0news.tamu.edu#link1

NOTE that one of these threads also mentions David Fannings "SHOW_PROGRESS" routine, a very
fancy and cross-platform way that may solve your problem.

-k.
--
------------------------------------------------------------ ----------
Ken Mankoff http://lasp.colorado.edu/snoe/
http://lasp.colorado.edu/mars/
http://lasp.colorado.edu/~mankoff/ http://lasp.colorado.edu/marsrobot/
------------------------------------------------------------ ----------

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Re: suppressing carriage return in PRINT [message #30591 is a reply to message #30588]

Tue, 07 May 2002 10:21

Paul Van Delst[1]
Messages: 1157
Registered: April 2002

Senior Member

Chris O'Dell wrote:
>
> Kenneth,
>
>> Use the Craig Markwardt routine: STATUSLINE
>>
>> Craig: Is there any chance you can get this to work in EMACS? Or you
>> could give me some pointers how to modify it? I know
>> its not vt100 and therefore a whole different beast, but I love the
>> routine and am sometimes forced to use x-terms just because nothing
>> shows up in emacs.
>
> Doesn't work in Windows, unfortunately. Neither does someone else's
> suggestion of opening my own window with a command like:
> openw, lun, filepath(/terminal), /get_lun
>
> (this gives you the error message):
> % FILEPATH: No terminal device available with IDLde (GUI) interface
>
> Any other ideas? Btw, i'm using 5.4.
> Chris

This is what I use to print out the data number that has been read in some code of mine:

<--------snippet------->
;----------------------------------------------------------- -------------------
; -- Read data panel by panel --
;----------------------------------------------------------- -------------------

bksp = MAKE_ARRAY( 5, VALUE = 8B )
IF ( NOT KEYWORD_SET( quiet ) ) THEN $
PRINT, FORMAT = '( 5x, "Reading panel # : ", $ )'

; ------------------------
; Initialise some counters
; ------------------------

n_panels = 0L
n_pts_read = 0L

; --------------------------
; Begin panel read open loop
; --------------------------

WHILE 1 DO BEGIN

IF ( NOT KEYWORD_SET( quiet ) ) THEN $
PRINT, FORMAT = '( a, i5, $ )', STRING( bksp ), n_panels + 1
....etc...
<--------snippet------->

The "$" character in the first print suppresses the line feed (dunno if it works cross
platform) and the print of the "bksp" array (containing the ASCII backspace character)
overwrites the previous print of the panel number. Again, dunno if it works cross
platform.

paulv

--
Paul van Delst Religious and cultural
CIMSS @ NOAA/NCEP/EMC purity is a fundamentalist
Ph: (301)763-8000 x7274 fantasy
Fax:(301)763-8545 V.S.Naipaul

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Re: suppressing carriage return in PRINT [message #30592 is a reply to message #30591]

Tue, 07 May 2002 10:07

Christopher W. O'Dell
Messages: 20
Registered: February 2001

Junior Member

Kenneth,

> Use the Craig Markwardt routine: STATUSLINE
>
> Craig: Is there any chance you can get this to work in EMACS? Or you
> could give me some pointers how to modify it? I know
> its not vt100 and therefore a whole different beast, but I love the
> routine and am sometimes forced to use x-terms just because nothing
> shows up in emacs.

Doesn't work in Windows, unfortunately. Neither does someone else's
suggestion of opening my own window with a command like:
openw, lun, filepath(/terminal), /get_lun

(this gives you the error message):
% FILEPATH: No terminal device available with IDLde (GUI) interface

Any other ideas? Btw, i'm using 5.4.
Chris

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Re: suppressing carriage return in PRINT [message #30593 is a reply to message #30592]

Tue, 07 May 2002 09:25

Kenneth Mankoff
Messages: 42
Registered: August 1999

Member

Chris O'Dell <odell@cmb.physics.wisc.edu> writes:

> This should be really easy. How do you print something (to the normal
> print window in IDL) without a carriage return?

Use the Craig Markwardt routine: STATUSLINE

Craig: Is there any chance you can get this to work in EMACS? Or you
could give me some pointers how to modify it? I know
its not vt100 and therefore a whole different beast, but I love the
routine and am sometimes forced to use x-terms just because nothing
shows up in emacs.

Thanks,
-k.

--
------------------------------------------------------------ ----------
Ken Mankoff http://lasp.colorado.edu/snoe/
http://lasp.colorado.edu/mars/
http://lasp.colorado.edu/~mankoff/ http://lasp.colorado.edu/marsrobot/
------------------------------------------------------------ ----------

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Re: suppressing carriage return in PRINT [message #30701 is a reply to message #30575]

Thu, 09 May 2002 07:00

Kenneth Mankoff
Messages: 42
Registered: August 1999

Member

Craig Markwardt <craigmnet@cow.physics.wisc.edu> writes:

> Kenneth Mankoff <mankoff@snoe.colorado.edu> writes:
>
>> Chris O'Dell <odell@cmb.physics.wisc.edu> writes:
>>
>>> This should be really easy. How do you print something (to the normal
>>> print window in IDL) without a carriage return?
>>
>> Craig: Is there any chance you can get this to work in EMACS? Or you
>> could give me some pointers how to modify it? I know
>> its not vt100 and therefore a whole different beast, but I love the
>> routine and am sometimes forced to use x-terms just because nothing
>> shows up in emacs.
>
> Since EMACS uses a "dumb" terminal I do not think this will work.
> [ I just tried this using STATUSLINE, /ENABLE. ] Same probably
> goes for the Windows IDE.
>
> Comments?

The only way I can think that it might work is currently beyond my
ability to implement. It would require JD to implement, I think, if
it is even possible. But it would go like this:

I assume the IDLWAVE shell can interact with Emacs, in which case
STATUSLINE would have to detect its being called in Emacs (this much
I know how to do), and then issue commands to the buffer like:
'(newline-no-cr) or whatever the LISP syntax would be to return to the
beginning of the current line without a carriage-return.

Oh well... It is not important. I like statusline, but its output
is critical enough to require me to use an xterm for only a few of
the routines I run.

Maybe I will get around to learning how to implement this after I
have implemented the Perl wrapper that allows subscripting with [-1].

-k.
--
------------------------------------------------------------ ----------
Ken Mankoff http://lasp.colorado.edu/snoe/
http://lasp.colorado.edu/mars/
http://lasp.colorado.edu/~mankoff/ http://lasp.colorado.edu/marsrobot/
------------------------------------------------------------ ----------

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Re: suppressing carriage return in PRINT [message #30961 is a reply to message #30579]

Fri, 24 May 2002 08:41

Christopher W. O'Dell
Messages: 20
Registered: February 2001

Junior Member

Paul Van Delst wrote:

> That's similar behaviour I see in some Fortran output on some OSes - *particularly* unix
> (good ol' VAX VMS did what I wanted....). The suppressed output doesn't get printed to
> screen until a new line is begun. Sort of like flushing buffers and whatnot. I don't think
> it's an IDL thing, I think it's an OS thing.
>
> paulv
>
> p.s. You can send me the 5 lattes in the mail. Oh, and no foam thanks. :o)

I guess i can just walk them across the street, if you're at SSEC --- I
never thought I'd actually have to pay up! By the way, I ended up using
David's SHOWPROGRESS function, it works great (but is a little overkill).

-Chris

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