R2HTML output shows NULL
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R2HTML output shows NULL
 
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Hello R People:
I am using the R2HTML program for the first time (actually yesterday), and I have a question, please: I am getting NULL in the webpage in several places, presumably where NULL would appear on the screen. How would I go about fixing that, please? Thanks, Erin -- Erin Hodgess Associate Professor Department of Computer and Mathematical Sciences University of Houston - Downtown mailto: [hidden email] ______________________________________________ [hidden email] mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code. |
Re: R2HTML output shows NULL
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Haven't you been asked to provide an example of code that illustrates your problem often enough by now to anticipate the request in your first post?
--------------------------------------------------------------------------- Jeff Newmiller The ..... ..... Go Live... DCN:<[hidden email]> Basics: ##.#. ##.#. Live Go... Live: OO#.. Dead: OO#.. Playing Research Engineer (Solar/Batteries O.O#. #.O#. with /Software/Embedded Controllers) .OO#. .OO#. rocks...1k --------------------------------------------------------------------------- Sent from my phone. Please excuse my brevity. Erin Hodgess <[hidden email]> wrote: >Hello R People: > >I am using the R2HTML program for the first time (actually yesterday), >and I have a question, please: > >I am getting NULL in the webpage in several places, presumably where >NULL would appear on the screen. > >How would I go about fixing that, please? > >Thanks, >Erin > > >-- >Erin Hodgess >Associate Professor >Department of Computer and Mathematical Sciences >University of Houston - Downtown >mailto: [hidden email] > >______________________________________________ >[hidden email] mailing list >https://stat.ethz.ch/mailman/listinfo/r-help >PLEASE do read the posting guide >http://www.R-project.org/posting-guide.html >and provide commented, minimal, self-contained, reproducible code. ______________________________________________ [hidden email] mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code. |
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Jeff, there are also many times that people are told not to post HTML,
so this case would be a bit of a Catch 22. Also some of us (well me at least, I expect others have as well) have experienced this already and fully understand what is being discussed without needing an example (and for this case I don't know that those who don't already understand what she is saying would benefit much from the example without the output). Erin, I have seen the same thing (as well as all the output from the hist function being printed and other things that are usually invisible) and have not found a way to suppress/hide the usually invisible output. An alternative is the txtStart and friends functions in the TeachingDemos package (which were inspired by, but not as fancy as, the R2HTML package). Like R2HTML those functions will copy your session to a file (currently plain text, enhanced text (can be post processed with the enscript program to provide color and embedded graphics), or MS Word documents (via the R2wd package), .rtf files (via the rtf package) are planned). These functions by default do not include output that is returned invisibly. On Fri, Apr 27, 2012 at 2:06 PM, Jeff Newmiller <[hidden email]> wrote: > Haven't you been asked to provide an example of code that illustrates your problem often enough by now to anticipate the request in your first post? > --------------------------------------------------------------------------- > Jeff Newmiller The ..... ..... Go Live... > DCN:<[hidden email]> Basics: ##.#. ##.#. Live Go... > Live: OO#.. Dead: OO#.. Playing > Research Engineer (Solar/Batteries O.O#. #.O#. with > /Software/Embedded Controllers) .OO#. .OO#. rocks...1k > --------------------------------------------------------------------------- > Sent from my phone. Please excuse my brevity. > > Erin Hodgess <[hidden email]> wrote: > >>Hello R People: >> >>I am using the R2HTML program for the first time (actually yesterday), >>and I have a question, please: >> >>I am getting NULL in the webpage in several places, presumably where >>NULL would appear on the screen. >> >>How would I go about fixing that, please? >> >>Thanks, >>Erin >> >> >>-- >>Erin Hodgess >>Associate Professor >>Department of Computer and Mathematical Sciences >>University of Houston - Downtown >>mailto: [hidden email] >> >>______________________________________________ >>[hidden email] mailing list >>https://stat.ethz.ch/mailman/listinfo/r-help >>PLEASE do read the posting guide >>http://www.R-project.org/posting-guide.html >>and provide commented, minimal, self-contained, reproducible code. > > ______________________________________________ > [hidden email] mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide http://www.R-project.org/posting-guide.html > and provide commented, minimal, self-contained, reproducible code. -- Gregory (Greg) L. Snow Ph.D. [hidden email] ______________________________________________ [hidden email] mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code. |
Re: R2HTML output shows NULL
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Hello!
Thank you. I figured out the solution. In the HTML.title function, there is an argument CSSstyle which is set to NULL by default. If I put " " in there, all is well. Sincerely, Erin On Fri, Apr 27, 2012 at 4:52 PM, Greg Snow <[hidden email]> wrote: > Jeff, there are also many times that people are told not to post HTML, > so this case would be a bit of a Catch 22. Also some of us (well me > at least, I expect others have as well) have experienced this already > and fully understand what is being discussed without needing an > example (and for this case I don't know that those who don't already > understand what she is saying would benefit much from the example > without the output). > > Erin, > > I have seen the same thing (as well as all the output from the hist > function being printed and other things that are usually invisible) > and have not found a way to suppress/hide the usually invisible > output. > > An alternative is the txtStart and friends functions in the > TeachingDemos package (which were inspired by, but not as fancy as, > the R2HTML package). Like R2HTML those functions will copy your > session to a file (currently plain text, enhanced text (can be post > processed with the enscript program to provide color and embedded > graphics), or MS Word documents (via the R2wd package), .rtf files > (via the rtf package) are planned). These functions by default do not > include output that is returned invisibly. > > On Fri, Apr 27, 2012 at 2:06 PM, Jeff Newmiller > <[hidden email]> wrote: >> Haven't you been asked to provide an example of code that illustrates your problem often enough by now to anticipate the request in your first post? >> --------------------------------------------------------------------------- >> Jeff Newmiller The ..... ..... Go Live... >> DCN:<[hidden email]> Basics: ##.#. ##.#. Live Go... >> Live: OO#.. Dead: OO#.. Playing >> Research Engineer (Solar/Batteries O.O#. #.O#. with >> /Software/Embedded Controllers) .OO#. .OO#. rocks...1k >> --------------------------------------------------------------------------- >> Sent from my phone. Please excuse my brevity. >> >> Erin Hodgess <[hidden email]> wrote: >> >>>Hello R People: >>> >>>I am using the R2HTML program for the first time (actually yesterday), >>>and I have a question, please: >>> >>>I am getting NULL in the webpage in several places, presumably where >>>NULL would appear on the screen. >>> >>>How would I go about fixing that, please? >>> >>>Thanks, >>>Erin >>> >>> >>>-- >>>Erin Hodgess >>>Associate Professor >>>Department of Computer and Mathematical Sciences >>>University of Houston - Downtown >>>mailto: [hidden email] >>> >>>______________________________________________ >>>[hidden email] mailing list >>>https://stat.ethz.ch/mailman/listinfo/r-help >>>PLEASE do read the posting guide >>>http://www.R-project.org/posting-guide.html >>>and provide commented, minimal, self-contained, reproducible code. >> >> ______________________________________________ >> [hidden email] mailing list >> https://stat.ethz.ch/mailman/listinfo/r-help >> PLEASE do read the posting guide http://www.R-project.org/posting-guide.html >> and provide commented, minimal, self-contained, reproducible code. > > > > -- > Gregory (Greg) L. Snow Ph.D. > [hidden email] -- Erin Hodgess Associate Professor Department of Computer and Mathematical Sciences University of Houston - Downtown mailto: [hidden email] ______________________________________________ [hidden email] mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code. |
Re: R2HTML output shows NULL
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In reply to this post by glsnow
On Fri, Apr 27, 2012 at 2:52 PM, Greg Snow <[hidden email]> wrote:
> Jeff, there are also many times that people are told not to post HTML, > so this case would be a bit of a Catch 22. Also some of us (well me > at least, I expect others have as well) have experienced this already > and fully understand what is being discussed without needing an > example (and for this case I don't know that those who don't already > understand what she is saying would benefit much from the example > without the output). > > Erin, > > I have seen the same thing (as well as all the output from the hist > function being printed and other things that are usually invisible) > and have not found a way to suppress/hide the usually invisible > output. I have struggled with this for some time. (embarrassingly, I filed/assigned myself a bug report over 6 months ago) you can track the status here: https://r-forge.r-project.org/tracker/index.php?func=detail&aid=1628&group_id=405&atid=1643 It seems like there should be two solutions: A) somehow never grab output that was meant to be invisible B) grab but then parse out such output. It is not too difficult to alter the internals of R2HTML to not print NULLs, but at least the easy way is global. I.e., any code output that is only NULL is simply dropped, even though sometimes there are legitimate cases. This is essentially the latter approach where there are the NULLs but clever printing avoids printing them. I have not had enough time to fully grasp the underlying workings of how output is redirected and stored. If anyone has suggestions, I would be happy to hear them. If anyone knows of nice guides/suggested reading about how Sweave or the like work in R, I would also be interested. Everytime I have gone straight to the source code, I lose sight of the forest for the trees =\ I have not forgotten or stopped working on it, but I was not the original package author so I have a lot to learn about how it works and I am swamped with classes and research presently so progress is slow. Josh > > An alternative is the txtStart and friends functions in the > TeachingDemos package (which were inspired by, but not as fancy as, > the R2HTML package). Like R2HTML those functions will copy your > session to a file (currently plain text, enhanced text (can be post > processed with the enscript program to provide color and embedded > graphics), or MS Word documents (via the R2wd package), .rtf files > (via the rtf package) are planned). These functions by default do not > include output that is returned invisibly. > > On Fri, Apr 27, 2012 at 2:06 PM, Jeff Newmiller > <[hidden email]> wrote: >> Haven't you been asked to provide an example of code that illustrates your problem often enough by now to anticipate the request in your first post? >> --------------------------------------------------------------------------- >> Jeff Newmiller The ..... ..... Go Live... >> DCN:<[hidden email]> Basics: ##.#. ##.#. Live Go... >> Live: OO#.. Dead: OO#.. Playing >> Research Engineer (Solar/Batteries O.O#. #.O#. with >> /Software/Embedded Controllers) .OO#. .OO#. rocks...1k >> --------------------------------------------------------------------------- >> Sent from my phone. Please excuse my brevity. >> >> Erin Hodgess <[hidden email]> wrote: >> >>>Hello R People: >>> >>>I am using the R2HTML program for the first time (actually yesterday), >>>and I have a question, please: >>> >>>I am getting NULL in the webpage in several places, presumably where >>>NULL would appear on the screen. >>> >>>How would I go about fixing that, please? >>> >>>Thanks, >>>Erin >>> >>> >>>-- >>>Erin Hodgess >>>Associate Professor >>>Department of Computer and Mathematical Sciences >>>University of Houston - Downtown >>>mailto: [hidden email] >>> >>>______________________________________________ >>>[hidden email] mailing list >>>https://stat.ethz.ch/mailman/listinfo/r-help >>>PLEASE do read the posting guide >>>http://www.R-project.org/posting-guide.html >>>and provide commented, minimal, self-contained, reproducible code. >> >> ______________________________________________ >> [hidden email] mailing list >> https://stat.ethz.ch/mailman/listinfo/r-help >> PLEASE do read the posting guide http://www.R-project.org/posting-guide.html >> and provide commented, minimal, self-contained, reproducible code. > > > > -- > Gregory (Greg) L. Snow Ph.D. > [hidden email] > > ______________________________________________ > [hidden email] mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide http://www.R-project.org/posting-guide.html > and provide commented, minimal, self-contained, reproducible code. -- Joshua Wiley Ph.D. Student, Health Psychology Programmer Analyst II, Statistical Consulting Group University of California, Los Angeles https://joshuawiley.com/ ______________________________________________ [hidden email] mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code. |
Re: R2HTML output shows NULL
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In reply to this post by glsnow
The key rule on this list is to post R code. And HTML is text in its raw form, so posting HTML source in a text message works fine, especially if it is trimmed to just show context. It is when the message itself is sent with MIME coding set to HTML that the formatting gets messed up and expectations of the author fall apart; e.g. that things like colored or bolded or large text will be visible to the readers.
I too occasionally see problems described that look like issues i have seen before, but often enough they turn out to be different and seeing code would have tipped me off. The most important reason to post examples is that the process of preparing a small example is often enough to allow the OP to figure out the answer themselves without even posting at all, and conserving ones chits for tough problems shows respect for the people on the list whose time you are requesting. --------------------------------------------------------------------------- Jeff Newmiller The ..... ..... Go Live... DCN:<[hidden email]> Basics: ##.#. ##.#. Live Go... Live: OO#.. Dead: OO#.. Playing Research Engineer (Solar/Batteries O.O#. #.O#. with /Software/Embedded Controllers) .OO#. .OO#. rocks...1k --------------------------------------------------------------------------- Sent from my phone. Please excuse my brevity. Greg Snow <[hidden email]> wrote: >Jeff, there are also many times that people are told not to post HTML, >so this case would be a bit of a Catch 22. Also some of us (well me >at least, I expect others have as well) have experienced this already >and fully understand what is being discussed without needing an >example (and for this case I don't know that those who don't already >understand what she is saying would benefit much from the example >without the output). > >Erin, > >I have seen the same thing (as well as all the output from the hist >function being printed and other things that are usually invisible) >and have not found a way to suppress/hide the usually invisible >output. > >An alternative is the txtStart and friends functions in the >TeachingDemos package (which were inspired by, but not as fancy as, >the R2HTML package). Like R2HTML those functions will copy your >session to a file (currently plain text, enhanced text (can be post >processed with the enscript program to provide color and embedded >graphics), or MS Word documents (via the R2wd package), .rtf files >(via the rtf package) are planned). These functions by default do not >include output that is returned invisibly. > >On Fri, Apr 27, 2012 at 2:06 PM, Jeff Newmiller ><[hidden email]> wrote: >> Haven't you been asked to provide an example of code that illustrates >your problem often enough by now to anticipate the request in your >first post? >> >--------------------------------------------------------------------------- >> Jeff Newmiller The ..... ..... Go >Live... >> DCN:<[hidden email]> Basics: ##.#. ##.#. Live >Go... >> Live: OO#.. Dead: OO#.. > Playing >> Research Engineer (Solar/Batteries O.O#. #.O#. with >> /Software/Embedded Controllers) .OO#. .OO#. > rocks...1k >> >--------------------------------------------------------------------------- >> Sent from my phone. Please excuse my brevity. >> >> Erin Hodgess <[hidden email]> wrote: >> >>>Hello R People: >>> >>>I am using the R2HTML program for the first time (actually >yesterday), >>>and I have a question, please: >>> >>>I am getting NULL in the webpage in several places, presumably where >>>NULL would appear on the screen. >>> >>>How would I go about fixing that, please? >>> >>>Thanks, >>>Erin >>> >>> >>>-- >>>Erin Hodgess >>>Associate Professor >>>Department of Computer and Mathematical Sciences >>>University of Houston - Downtown >>>mailto: [hidden email] >>> >>>______________________________________________ >>>[hidden email] mailing list >>>https://stat.ethz.ch/mailman/listinfo/r-help >>>PLEASE do read the posting guide >>>http://www.R-project.org/posting-guide.html >>>and provide commented, minimal, self-contained, reproducible code. >> >> ______________________________________________ >> [hidden email] mailing list >> https://stat.ethz.ch/mailman/listinfo/r-help >> PLEASE do read the posting guide >http://www.R-project.org/posting-guide.html >> and provide commented, minimal, self-contained, reproducible code. > > > >-- >Gregory (Greg) L. Snow Ph.D. >[hidden email] ______________________________________________ [hidden email] mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code. |
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In reply to this post by Joshua Wiley-2
Joshua,
The task call back mechanism passes on a flag to say if the output was invisible or not, so the HTML functions would just need to look for and honor that flag. This is what the TeachingDemos versions do. On Fri, Apr 27, 2012 at 4:07 PM, Joshua Wiley <[hidden email]> wrote: > On Fri, Apr 27, 2012 at 2:52 PM, Greg Snow <[hidden email]> wrote: >> Jeff, there are also many times that people are told not to post HTML, >> so this case would be a bit of a Catch 22. Also some of us (well me >> at least, I expect others have as well) have experienced this already >> and fully understand what is being discussed without needing an >> example (and for this case I don't know that those who don't already >> understand what she is saying would benefit much from the example >> without the output). >> >> Erin, >> >> I have seen the same thing (as well as all the output from the hist >> function being printed and other things that are usually invisible) >> and have not found a way to suppress/hide the usually invisible >> output. > > I have struggled with this for some time. (embarrassingly, I > filed/assigned myself a bug report over 6 months ago) you can track > the status here: > https://r-forge.r-project.org/tracker/index.php?func=detail&aid=1628&group_id=405&atid=1643 > > It seems like there should be two solutions: A) somehow never grab > output that was meant to be invisible B) grab but then parse out such > output. It is not too difficult to alter the internals of R2HTML to > not print NULLs, but at least the easy way is global. I.e., any code > output that is only NULL is simply dropped, even though sometimes > there are legitimate cases. This is essentially the latter approach > where there are the NULLs but clever printing avoids printing them. I > have not had enough time to fully grasp the underlying workings of how > output is redirected and stored. If anyone has suggestions, I would > be happy to hear them. If anyone knows of nice guides/suggested > reading about how Sweave or the like work in R, I would also be > interested. Everytime I have gone straight to the source code, I lose > sight of the forest for the trees =\ > > I have not forgotten or stopped working on it, but I was not the > original package author so I have a lot to learn about how it works > and I am swamped with classes and research presently so progress is > slow. > > Josh > > > > > >> >> An alternative is the txtStart and friends functions in the >> TeachingDemos package (which were inspired by, but not as fancy as, >> the R2HTML package). Like R2HTML those functions will copy your >> session to a file (currently plain text, enhanced text (can be post >> processed with the enscript program to provide color and embedded >> graphics), or MS Word documents (via the R2wd package), .rtf files >> (via the rtf package) are planned). These functions by default do not >> include output that is returned invisibly. >> >> On Fri, Apr 27, 2012 at 2:06 PM, Jeff Newmiller >> <[hidden email]> wrote: >>> Haven't you been asked to provide an example of code that illustrates your problem often enough by now to anticipate the request in your first post? >>> --------------------------------------------------------------------------- >>> Jeff Newmiller The ..... ..... Go Live... >>> DCN:<[hidden email]> Basics: ##.#. ##.#. Live Go... >>> Live: OO#.. Dead: OO#.. Playing >>> Research Engineer (Solar/Batteries O.O#. #.O#. with >>> /Software/Embedded Controllers) .OO#. .OO#. rocks...1k >>> --------------------------------------------------------------------------- >>> Sent from my phone. Please excuse my brevity. >>> >>> Erin Hodgess <[hidden email]> wrote: >>> >>>>Hello R People: >>>> >>>>I am using the R2HTML program for the first time (actually yesterday), >>>>and I have a question, please: >>>> >>>>I am getting NULL in the webpage in several places, presumably where >>>>NULL would appear on the screen. >>>> >>>>How would I go about fixing that, please? >>>> >>>>Thanks, >>>>Erin >>>> >>>> >>>>-- >>>>Erin Hodgess >>>>Associate Professor >>>>Department of Computer and Mathematical Sciences >>>>University of Houston - Downtown >>>>mailto: [hidden email] >>>> >>>>______________________________________________ >>>>[hidden email] mailing list >>>>https://stat.ethz.ch/mailman/listinfo/r-help >>>>PLEASE do read the posting guide >>>>http://www.R-project.org/posting-guide.html >>>>and provide commented, minimal, self-contained, reproducible code. >>> >>> ______________________________________________ >>> [hidden email] mailing list >>> https://stat.ethz.ch/mailman/listinfo/r-help >>> PLEASE do read the posting guide http://www.R-project.org/posting-guide.html >>> and provide commented, minimal, self-contained, reproducible code. >> >> >> >> -- >> Gregory (Greg) L. Snow Ph.D. >> [hidden email] >> >> ______________________________________________ >> [hidden email] mailing list >> https://stat.ethz.ch/mailman/listinfo/r-help >> PLEASE do read the posting guide http://www.R-project.org/posting-guide.html >> and provide commented, minimal, self-contained, reproducible code. > > > > -- > Joshua Wiley > Ph.D. Student, Health Psychology > Programmer Analyst II, Statistical Consulting Group > University of California, Los Angeles > https://joshuawiley.com/ -- Gregory (Greg) L. Snow Ph.D. [hidden email] ______________________________________________ [hidden email] mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code. |
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