fortran, CR/LF Control With WRITEs to Console

CR/LF Control With WRITEs to Console

Author	Message
tornado Jef #1 / 25	CR/LF Control With WRITEs to Console All, I'm sure this may have been answered before but I can't find any reference to it so... When you do a WRITE within a Do Loop to the console screen such as: Do IJK=1,10 WRITE(,) 'Loop Count = ', IJK ENDDO It will write a new line on the screen for every write. How can it be formatted so the writes will stay on the same line & just show the IJK count incrimenting? Thanks in advance, Jeff Krob
Sat, 28 Nov 2009 03:41:06 GMT

m.. #2 / 25	CR/LF Control With WRITEs to Console Quote: >All, >I'm sure this may have been answered before but I can't find any >reference to it so... >When you do a WRITE within a Do Loop to the console screen such as: >Do IJK=1,10 > WRITE(,) 'Loop Count = ', IJK >ENDDO >It will write a new line on the screen for every write. How can it be >formatted so the writes will stay on the same line & just show the IJK >count incrimenting? >Thanks in advance, >Jeff Krob That prob. depends on your compiler, operating system etc. and maybe it's not possible ... but you could try carriage control '+' E.g. write(,)'+ ijk=',ijk or write(,'(''+ ijk='',i3)')ijk You may also have to fiddle with file attribute switches0 e.g. sequential, access ...etc. That is - it has to be pretty important ! For a DOS screen you can poke it right where you want by but you really* have to need it before you get into that. Chris
Fri, 27 Nov 2009 22:04:50 GMT

tornado Jef #3 / 25	CR/LF Control With WRITEs to Console Quote: > >All, > >I'm sure this may have been answered before but I can't find any > >reference to it so... > >When you do a WRITE within a Do Loop to the console screen such as: > >Do IJK=1,10 > > WRITE(,) 'Loop Count = ', IJK > >ENDDO > >It will write a new line on the screen for every write. How can it be > >formatted so the writes will stay on the same line & just show the IJK > >count incrimenting? > >Thanks in advance, > >Jeff Krob > That prob. depends on your compiler, operating system etc. > and maybe it's not possible ... but you could try > carriage control '+' > E.g. write(,)'+ ijk=',ijk > or write(,'(''+ ijk='',i3)')ijk > You may also have to fiddle with file attribute switches0 > e.g. sequential, access ...etc. > That is - it has to be pretty important ! > For a DOS screen you can poke it right where you want by > but you really* have to need it before you get into that. > Chris Chris, Thanks for the help but they did not work. BTW - My compiler is CVF 6.3 Any other ideas??? Jeff
Sat, 28 Nov 2009 04:44:38 GMT

gary.l.sc.. #4 / 25	CR/LF Control With WRITEs to Console Quote: > All, > I'm sure this may have been answered before but I can't find any > reference to it so... > When you do a WRITE within a Do Loop to the console screen such as: > Do IJK=1,10 > WRITE(,) 'Loop Count = ', IJK > ENDDO > It will write a new line on the screen for every write. How can it be > formatted so the writes will stay on the same line & just show the IJK > count incrimenting? > Thanks in advance, > Jeff Krob Does not appear to be possible with CVF. Specifying advance='no' suppresses flushing to the screen. Using extensions "$" in the format is closer, but you can't tab back to column 1 using "T" format. The closest I could get was: Do IJK=1,10 WRITE(6,'(a,i0)')'Loop Count = ', IJK call sleepqq(500) call systemqq('cls') ENDDO Looks like what you want, but of course the screen is being completely cleared between writes and that may or may not be what you want.
Sat, 28 Nov 2009 04:44:46 GMT

dpb #5 / 25	CR/LF Control With WRITEs to Console Quote: >>> All, >>> I'm sure this may have been answered before but I can't find any >>> reference to it so... >>> When you do a WRITE within a Do Loop to the console screen such as: >>> Do IJK=1,10 >>> WRITE(,) 'Loop Count = ', IJK >>> ENDDO >>> It will write a new line on the screen for every write. How can it be >>> formatted so the writes will stay on the same line & just show the IJK >>> count incrimenting? >>> Thanks in advance, >>> Jeff Krob >> That prob. depends on your compiler, operating system etc. >> and maybe it's not possible ... but you could try >> carriage control '+' >> E.g. write(,)'+ ijk=',ijk >> or write(,'(''+ ijk='',i3)')ijk >> You may also have to fiddle with file attribute switches0 >> e.g. sequential, access ...etc. >> That is - it has to be pretty important ! >> For a DOS screen you can poke it right where you want by >> but you really* have to need it before you get into that. >> Chris > Chris, > Thanks for the help but they did not work. BTW - My compiler is CVF > 6.3 For CVF and some others, an extension is to use "$" or "\" as a format specifier to suppress CR/LF in interactive output. It's documented under FORMAT specifiers. --
Sat, 28 Nov 2009 05:01:18 GMT

gary.l.sc.. #6 / 25	CR/LF Control With WRITEs to Console Quote: > >>> All, > >>> I'm sure this may have been answered before but I can't find any > >>> reference to it so... > >>> When you do a WRITE within a Do Loop to the console screen such as: > >>> Do IJK=1,10 > >>> WRITE(,) 'Loop Count = ', IJK > >>> ENDDO > >>> It will write a new line on the screen for every write. How can it be > >>> formatted so the writes will stay on the same line & just show the IJK > >>> count incrimenting? > >>> Thanks in advance, > >>> Jeff Krob > >> That prob. depends on your compiler, operating system etc. > >> and maybe it's not possible ... but you could try > >> carriage control '+' > >> E.g. write(,)'+ ijk=',ijk > >> or write(,'(''+ ijk='',i3)')ijk > >> You may also have to fiddle with file attribute switches0 > >> e.g. sequential, access ...etc. > >> That is - it has to be pretty important ! > >> For a DOS screen you can poke it right where you want by > >> but you really* have to need it before you get into that. > >> Chris > > Chris, > > Thanks for the help but they did not work. BTW - My compiler is CVF > > 6.3 > For CVF and some others, an extension is to use "$" or "\" as a format > specifier to suppress CR/LF in interactive output. It's documented > under FORMAT specifiers. I tried "$" and "\" (interchangeable), but there was no way to reposition the cursor back to beginning of row. Next write began immediately at end of previous write. Tried T1 format but that was ignored. - Hide quoted text - - Show quoted text - Quote: > --
Sat, 28 Nov 2009 05:10:02 GMT

dpb #7 / 25	CR/LF Control With WRITEs to Console Quote: >> All, >> I'm sure this may have been answered before but I can't find any >> reference to it so... >> When you do a WRITE within a Do Loop to the console screen such as: >> Do IJK=1,10 >> WRITE(,) 'Loop Count = ', IJK >> ENDDO >> It will write a new line on the screen for every write. How can it be >> formatted so the writes will stay on the same line & just show the IJK >> count incrimenting? >> Thanks in advance, >> Jeff Krob > Does not appear to be possible with CVF. ... Didn't see the desire for the overwrite previously. In CVF, the way is to use the Win32 API SetConsoleCursorPosition. It's documented in the help files on console applications and I think there's a sample project... --
Sat, 28 Nov 2009 05:21:21 GMT

dpb #8 / 25	CR/LF Control With WRITEs to Console ... Quote: > I tried "$" and "\" (interchangeable), but there was no way to > reposition the cursor back to beginning of row. ... See my other response re: SetConsoleCursorPosition() --
Sat, 28 Nov 2009 05:28:44 GMT

Richard Mai #9 / 25	CR/LF Control With WRITEs to Console Quote: > I tried "$" and "\" (interchangeable), but there was no way to > reposition the cursor back to beginning of row. Next write began > immediately at end of previous write. Tried T1 format but that was > ignored. Substitute "interpreted differently than you expected" for "ignored". While both $ and \ are nonstandard edit descriptors and thus the standard isn't definitive on them, still one can get some guidance from it. Those edit descriptors are related to the standard advance='no'. I would strongly expect their implementation to be simillar. With advance='no', the T edit descriptor specifies a position relative to the left tab limit - NOT relative to the beginning of the record. The left tab limit is set to the current position with each write. Without advance='no' (or nonstandard equivalents), the distinction isn't obvious. I'd give good odds that the T1 is not ignored, but is instead interpreted as being relative to the left tab limit, which makes it useless for this purpose. If you try a T other than T1, or if you put some other output befoew the T1, but in the same write, it would presumably be more obvious that it wasn't being ignored. But that doesn't make it any more useful for this purpose. Yes, this subject has been discussed many times here before. It doesn't surprise me to see it asked again, but it slightly surprises me to see the "regulars" rehash the same things that don't work. There isn't a good simple portable answer. It is too dependent on environmental details. One can fiddle with explicitly writing control characters to the output, but that depends on the details of the interpretation of control characters, which varies depending on the environment. There was a time when using ANSI terminal escape sequences was at least reasonably portable. It still is probably a decent option, but you do have to then worry about whether particular environments support the ANSI sequences or not. For example, I don't think they are supported by default in some Windows envirionments, though there are ways to make it work, which probably vary from version to version of Windows. -- Richard Maine \| Good judgement comes from experience; email: last name at domain . net \| experience comes from bad judgement. domain: summertriangle \| -- Mark Twain
Sat, 28 Nov 2009 05:35:01 GMT

tho.. #10 / 25	CR/LF Control With WRITEs to Console Quote: tornado Jeff writes: > Thanks for the help but they did not work. BTW - My compiler is CVF > 6.3 > Any other ideas??? I know it can be done with CVF 6.6, and I'd be surprised if 6.3 couldn't do it. Others have shown how to suppress the line feed, but are having trouble repositioning the cursor back to the left margin. I simply declare: CHARACTER*1 CR CR = CHAR(13) and then include CR as the first item in the output list, obviously with the A1 format edit descriptor. That forces the carriage return (hence the name of the variable).
Sat, 28 Nov 2009 05:44:41 GMT

Terenc #11 / 25	CR/LF Control With WRITEs to Console The standard way to elimintae the output of a cr-lf in formmated output is to use the backslash '\' in the format statement, whenever you need to continue on the same line for the NEXT output (not this one). CVF supports this, because I use it. I prefer to write BINARY UNFORMATTED text without format statements, for any program-designed page writing (for example when writing a WORD- readable document by outputting RTF code).
Sat, 28 Nov 2009 08:09:04 GMT

Gary Scot #12 / 25	CR/LF Control With WRITEs to Console Quote: >>> All, >>> I'm sure this may have been answered before but I can't find any >>> reference to it so... >>> When you do a WRITE within a Do Loop to the console screen such as: >>> Do IJK=1,10 >>> WRITE(,) 'Loop Count = ', IJK >>> ENDDO >>> It will write a new line on the screen for every write. How can it be >>> formatted so the writes will stay on the same line & just show the IJK >>> count incrimenting? >>> Thanks in advance, >>> Jeff Krob >> Does not appear to be possible with CVF. ... > Didn't see the desire for the overwrite previously. > In CVF, the way is to use the Win32 API SetConsoleCursorPosition. It's > documented in the help files on console applications and I think there's > a sample project... I was trying to avoid the API answer. I also have a free library called EZCONSOLE (for CVF and MS FPS4) that makes it very easy as well. Quote: > -- -- Gary Scott fortran Library: http://www.fortranlib.com Support the Original G95 Project: http://www.g95.org -OR- Support the GNU GFortran Project: http://gcc.gnu.org/fortran/index.html If you want to do the impossible, don't hire an expert because he knows it can't be done. -- Henry Ford
Sat, 28 Nov 2009 08:29:52 GMT

Gary Scot #13 / 25	CR/LF Control With WRITEs to Console Quote: >>I tried "$" and "\" (interchangeable), but there was no way to >>reposition the cursor back to beginning of row. Next write began >>immediately at end of previous write. Tried T1 format but that was >>ignored. > Substitute "interpreted differently than you expected" for "ignored". > While both $ and \ are nonstandard edit descriptors and thus the > standard isn't definitive on them, still one can get some guidance from > it. Those edit descriptors are related to the standard advance='no'. I > would strongly expect their implementation to be simillar. Yes, I did try other tab values (T100) and the effect was as anticipated (relative to the current cursor position following the previous write). I meant ignored in the sense that it didn't reposition the cursor relative to the physical record (of the terminal). I guess maybe conceptually, it was positioning to position 1 relative to the "logical" record (in terminlogy that I'm familiar with) which was about to be written. I just don't like the resulting behavior in this case. Quote: > With advance='no', the T edit descriptor specifies a position relative > to the left tab limit - NOT relative to the beginning of the record. > The left tab limit is set to the current position with each write. > Without advance='no' (or nonstandard equivalents), the distinction isn't > obvious. > I'd give good odds that the T1 is not ignored, but is instead > interpreted as being relative to the left tab limit, which makes it > useless for this purpose. If you try a T other than T1, or if you put > some other output befoew the T1, but in the same write, it would > presumably be more obvious that it wasn't being ignored. But that > doesn't make it any more useful for this purpose. > Yes, this subject has been discussed many times here before. It doesn't > surprise me to see it asked again, but it slightly surprises me to see > the "regulars" rehash the same things that don't work. > There isn't a good simple portable answer. It is too dependent on > environmental details. One can fiddle with explicitly writing control > characters to the output, but that depends on the details of the > interpretation of control characters, which varies depending on the > environment. There was a time when using ANSI terminal escape sequences > was at least reasonably portable. It still is probably a decent option, > but you do have to then worry about whether particular environments > support the ANSI sequences or not. For example, I don't think they are > supported by default in some Windows envirionments, though there are > ways to make it work, which probably vary from version to version of > Windows. -- Gary Scott Fortran Library: http://www.fortranlib.com Support the Original G95 Project: http://www.g95.org -OR- Support the GNU GFortran Project: http://gcc.gnu.org/fortran/index.html If you want to do the impossible, don't hire an expert because he knows it can't be done. -- Henry Ford
Sat, 28 Nov 2009 08:34:20 GMT

Richard Mai #14 / 25	CR/LF Control With WRITEs to Console Quote: > I guess maybe > conceptually, it was positioning to position 1 relative to the "logical" > record (in terminlogy that I'm familiar with) I'd avoid using that terminology here. The term "logical record" is used for different concepts than this one. The term is probably older than I am, or at least darned close. You will confuse things if you use that established term for this unrelated thing. There is only one record involved here. I think that is the point you are missing. Advance='no' (or the nonstandard $ and \ edit descriptors) are used to write one record with multiple write statements. The parts written are not logical records; they are just part of the record. In fact, the entire record is a logical record in the usual terminology, though the distinction between logical and physical records is more of a tape media thing (I did note that it is an old term) than useful for terminals. Quote: > I just don't like the resulting behavior in this case. That's a different matter. Don't think I'll try to argue why it is good or bad. Just that's the way it is. -- Richard Maine \| Good judgement comes from experience; email: last name at domain . net \| experience comes from bad judgement. domain: summertriangle \| -- Mark Twain
Sat, 28 Nov 2009 08:54:20 GMT

dpb #15 / 25	CR/LF Control With WRITEs to Console Quote: >>>> All, >>>> I'm sure this may have been answered before but I can't find any >>>> reference to it so... >>>> When you do a WRITE within a Do Loop to the console screen such as: >>>> Do IJK=1,10 >>>> WRITE(,) 'Loop Count = ', IJK >>>> ENDDO >>>> It will write a new line on the screen for every write. How can it be >>>> formatted so the writes will stay on the same line & just show the IJK >>>> count incrimenting? >>>> Thanks in advance, >>>> Jeff Krob >>> Does not appear to be possible with CVF. ... >> Didn't see the desire for the overwrite previously. >> In CVF, the way is to use the Win32 API SetConsoleCursorPosition. >> It's documented in the help files on console applications and I think >> there's a sample project... > I was trying to avoid the API answer. I also have a free library called > EZCONSOLE (for CVF and MS FPS4) that makes it very easy as well. Oh, still another constraint! :) I was trying to avoid the ASCII CR because I wasn't sure how it might be interpreted in XP as I couldn't recall whether I had done it since (finally) ditching NT4 and knowing only superficially I had read of some things that weren't the same/supported. I tried a test project and it does work so that's probably the easiest... What I tested was write(*,'('A,I3.3\')) chr13, i where chr13 is char(13) Now, have we beat this to death, yet... :) --
Sat, 28 Nov 2009 09:11:07 GMT

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