[LON-CAPA-users] Printing with version 2.11.1

Thu Jul 9 09:31:21 EDT 2015

The updates to ImageMagick have been completed, and the resources print with the images---the conversion of images is successful.  However, the size of the images is too large.  The images overlap other questions on the same page.  However, this is probably something that should be set by the author by using the <TeXwith> et al. tags.  For thos who are interested in seeing the output, I have uploaded the pdf files to

www.math.fsu.edu/~rabert/LonCapa/sample1column.pdf
www.math.fsu.edu/~rabert/LonCapa/sample2column.pdf

There are 5 images in the printout.  The two black-and-white images have a corresponding postscript file in the problem directory.  The 3 color images were converted from jpg files.

Rex Abert
Associate Professor of Mathematics
Tallahassee Community College
________________________________________
From: lon-capa-users-bounces at mail.lon-capa.org [lon-capa-users-bounces at mail.lon-capa.org] on behalf of Rex Abert [ABERTR at tcc.fl.edu]
Sent: Thursday, June 25, 2015 11:26 AM
To: Discussion list for LON-CAPA users
Subject: Re: [LON-CAPA-users] Printing with version 2.11.1

I have forwarded the information to our IT guy.  I'll keep you posted.

Rex Abert
Associate Professor of Mathematics
Tallahassee Community College
________________________________________
From: lon-capa-users-bounces at mail.lon-capa.org [lon-capa-users-bounces at mail.lon-capa.org] on behalf of Stuart Raeburn [raeburn at msu.edu]
Sent: Thursday, June 25, 2015 10:58 AM
To: lon-capa-users at mail.lon-capa.org
Subject: Re: [LON-CAPA-users] Printing with version 2.11.1

Rex,

> So that leaves us with the following options ...

There is another option:

Ask your server administrator to run:

yum update

to install newer versions of ImageMagick and ImageMagick-perl on
loncapa.tcc.fl.edu

I have now added newer ImageMagick and ImageMagick-perl rpms
(6.8.9-7.centos6.lc) to the LON-CAPA CentOS 6 repository for 32 bit
and 64 bit architectures:

http://install.loncapa.org/centos/loncapa/6/x86_64/
http://install.loncapa.org/centos/loncapa/6/i386/

I tested printout generation of:
/res/msu/kortemey/physicsprecourse/geometry/arclength.problem

and it worked without error (i.e., created a non-blank PDF), after I
updated a CentOS 6 VM to use these newer versions of ImageMagick to
convert the arc.jpg image to arc.jpg.eps, and then reloaded the Apache
web server:

/etc/init.d/httpd reload

Stuart Raeburn
LON-CAPA Academic Consortium

Quoting Rex Abert <ABERTR at tcc.fl.edu>:

> Stuart & Gerd-
>
> Here is what I've found.
>
> 1) The TeX file looks OK.
> 2) The dvi file looks OK, with placeholders for the images to come later.
> 3) The .ps file mostly displays OK, but with errors on the resources
>  that contain images from Gerd, and no corresponding eps file for
> the  image.  Pages that do not contain such an image have no issues.
> 4) The conversion to pdf gives up upon reaching the first image
> without a corresponding eps file.
>
> So that leaves us with the following options:  Gerd: Would you be
> willing to drop in some eps files for the images in your resources?
>  (If needed, I could snag the jpegs and convert them in GIMP and
> email them back to you.)  I would like to use the few problems
> relating to Trigonometry  in the same folder as the problem listed
> below.  If not, I could reproduce the problem in my own directory.
>
> Thanks!
>
> Rex Abert
> Associate Professor of Mathematics
> Tallahassee Community College
> ________________________________________
> From: lon-capa-users-bounces at mail.lon-capa.org
> [lon-capa-users-bounces at mail.lon-capa.org] on behalf of Rex Abert
> [ABERTR at tcc.fl.edu]
> Sent: Thursday, June 25, 2015 8:41 AM
> To: Discussion list for LON-CAPA users
> Subject: Re: [LON-CAPA-users] Printing with version 2.11.1
>
> I'll look into this some more.  The problem cited is the third one
> in a homework folder.  When printing all problems in the folder, I
> get a pdf containing the first two problems, and nothing else.  Your
>  tips should help me troubleshoot exactly where the issue is---it
> could be in the second problem, perhaps.
>
> Anyway, thanks for the tips and I'll  see what I find.
>
> Rex Abert
> Associate Professor of Mathematics
> Tallahassee Community College
> ________________________________________
> From: lon-capa-users-bounces at mail.lon-capa.org
> [lon-capa-users-bounces at mail.lon-capa.org] on behalf of Stuart
> Raeburn [raeburn at msu.edu]
> Sent: Wednesday, June 24, 2015 8:49 AM
> To: lon-capa-users at mail.lon-capa.org
> Subject: Re: [LON-CAPA-users] Printing with version 2.11.1
>
> Hi Rex,
>
> For this resource:
>
> /res/msu/kortemey/physicsprecourse/geometry/arclength.problem
>
> the print utility in LON-CAPA generates a non-blank PDF when using any
> of the servers in the msu domain, or any of the *educog.com servers
> (all running LON-CAPA 2.11.1).
>
> I switched my web session to a number of other servers in the network
> currently running 2.11.1 and found that a non-blank PDF was also
> generated on servers in other domains where the Linux distro was
> CentOS 5 or 7, or Ubuntu 12 or 14.  However, a blank PDF was the
> result on some (but not all) servers running CentOS 6.
>
>> ... Now, I just get a link to the pdf file  and nothing else.  Is
>> there a way to find the log and TeX files with  2.11.1?
>
> There has not been a change in the display of links to the .log and
> .tex files in 2.11.1 as compared with earlier LON-CAPA versions.
>
> Those links are displayed to "advanced users" (e.g., Course
> Coordinators, Authors/Co-authors etc.) when an "Emergency stop" is
> found in the log file.
>
> If printout generation is successful and the various stages of the
> process are completed (i.e., calls to latex, dvips, ps2pdf13 complete
> etc.) then the corresponding files with extensions  .log, .tex, .ps
> and .pdf will remain in the prtspool directory, until the nightly
> clean-up by cleanup_file_caches.pl.
>
> You can access the .log, .tex etc. files by replacing the .pdf
> extension, with the extension for the desired file in your browser's
> address box. If you right click (or ctrl-click for Mac) on the link:
> "Your PDF file" in the text:
>
> <Name> - Your PDF file is ready for download, in the final printout
> generation screen then you can copy the link location, which will be
> of the form:
> http://loncapa.tcc.fl.edu/prtspool/<user>_<domain>_<identifier>.pdf
>
> Comparing sizes for the various files generated when printing
> /res/msu/kortemey/physicsprecourse/geometry/arclength.problem
> (imported into a course) in the same course for the same user on msua4
> (i.e., s4.lite.msu.edu) versus tccfll1 (i.e., loncapa.tcc.fl.edu) I
> find:
>
> 2412 msua4.dvi
> 26010 msua4.log
> 30978 msua4.pdf
> 999358 msua4.ps
> 3740 msua4.tex
> 1001384 msua4temporar.ps
>
> 2408 tccfll1.dvi
> 26010 tccfll1.log
> 9360 tccfll1.pdf
> 1003401 tccfll1.ps
> 3740 tccfll1.tex
> 1005427 tccfll1temporar.ps
>
> A diff of tccfll1.tex and msua4.tex reports no differences.
>
> However the .dvi files are different, and in addition the .ps file
> generated on loncapa.tcc.fl.edu cannot be displayed with a postscript
> viewer.
>
> The issue would seem to be in the generation of the .dvi file within
> cgi-bin/printout.pl from the command:
>
> "latex filename.tex 1>/dev/null 2>/dev/null"
>
> where filename is the name of the .tex file.
>
> Note: loncapa.tcc.fl.edu and s4.lite.msu.edu have the same Linux
> distro, and architecture.
>
>
> Stuart Raeburn
> LON-CAPA Academic Consortium
>
>
> Quoting Rex Abert <ABERTR at tcc.fl.edu>:
>
>> I'm having difficulty printing some resources after our system was
>> upgraded to 2.11.1.  Previously, if there was a TeX error, Lon-Capa
>> would provide links to the log file and the original TeX file to
>> assist in troubleshooting.  Now, I just get a link to the pdf file
>> and nothing else.  Is there a way to find the log and TeX files with
>>  2.11.1?
>>
>> For what it's worth, the resource that is causing the error is
>>
>> /res/msu/kortemey/physicsprecourse/geometry/arclength.problem
>>
>> (Sorry, Gerd!)
>>
>> Rex Abert
>> Associate Professor of Mathematics
>> Tallahassee Community College
>> _______________________________________________
>> LON-CAPA-users mailing list
>> LON-CAPA-users at mail.lon-capa.org
>> http://mail.lon-capa.org/mailman/listinfo/lon-capa-users

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