Re: [R] xtable - print - suppress output
On Sep 24, 2009, at 10:20 AM, Thomas Lumley wrote: On Mon, 21 Sep 2009, David Winsemius wrote: On Sep 21, 2009, at 5:52 PM, Martin Batholdy wrote: I use xtable to convert data.frames to html tables. But when I use the print-command I always get the whole output printed even if I just want to save the html table into a variable; How can I suppress that output is printed? Perhaps by diverting it somewhere else? (after the example in xtable's help page) capture.output(print(tli.table, type="html"), file="HTout.html") R is not an HTML editor, so it would seem less than intuitive to send it to a character variable. It would not work to assign the value of capture.output since that is an invisible NULL. If that were true, capture.output() would be pretty useless. The returned value is NULL if the file= argument is specified, otherwise it is the captured output. Thanks for the correction. I was not reading the help page correctly. table <- capture.output(print(xtable(CERAT), type="html")) # would have been the correct answer. -- David Winsemius, MD Heritage Laboratories West Hartford, CT __ R-help@r-project.org 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: [R] xtable - print - suppress output
On Mon, 21 Sep 2009, David Winsemius wrote: On Sep 21, 2009, at 5:52 PM, Martin Batholdy wrote: I use xtable to convert data.frames to html tables. But when I use the print-command I always get the whole output printed even if I just want to save the html table into a variable; table <- print(xtable(CERAT), type="html") How can I suppress that output is printed? Perhaps by diverting it somewhere else? (after the example in xtable's help page) capture.output(print(tli.table, type="html"), file="HTout.html") R is not an HTML editor, so it would seem less than intuitive to send it to a character variable. It would not work to assign the value of capture.output since that is an invisible NULL. If that were true, capture.output() would be pretty useless. The returned value is NULL if the file= argument is specified, otherwise it is the captured output. -thomas Thomas Lumley Assoc. Professor, Biostatistics tlum...@u.washington.eduUniversity of Washington, Seattle __ R-help@r-project.org 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: [R] xtable - print - suppress output
Note that R has a capture.output function, e.g. s <- capture.output(print(xtable(BOD), type = "html")) On Mon, Sep 21, 2009 at 9:21 PM, Charlie Sharpsteen wrote: > On Mon, Sep 21, 2009 at 3:52 PM, Don MacQueen wrote: > > snip... > > >> In other words, there is no such thing as saving the html table into a >> variable. It just doesn't work that way. All that is possible is to write it >> (print it) to either the screen or a file. >> >> Which leads back to the question that one of the other responses asked ... >> what is the reason for saving it to an R object? What do you hope to >> accomplish by doing that, that you can't accomplish using print() ? >> >> Hope this helps >> >> -Don >> >> > Actually, I find myself doing this all the time with xtable output. xtable() > is a very nice piece of code and it has saved me a lot of time-- but in some > cases I have found the defaults/options available for output formatting > rather... inflexible. > > The quickest solution for me has always been to capture the output of > print.xtable() as an R character vector, do some editing/splicing/tweaking > and then re-emit the code. I use a tweaked version of the print.xtable > function that omits the final print() statement (which is what causes all > the output to hit the console, or your LaTeX document or wherever else you > don't want it to go) and reorganizes the output for easy editing. You can > make your own using: > > myXtable <- edit( xtable:::print.xtable ) > > Then replace the lines: > > print(result) > return(invisible(result$text)) > > With: > > result$text <- strsplit( result$text, '\n' )[[1]] > return( result$text ) > > > Now, you can use > > output <- myXtable( xtableObject, type = 'html' ) > > To capture the output as a character vector and edit it as you wish. > > Hope that helps! > > -Charlie > > [[alternative HTML version deleted]] > > __ > R-help@r-project.org 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. > __ R-help@r-project.org 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: [R] xtable - print - suppress output
On Mon, Sep 21, 2009 at 3:52 PM, Don MacQueen wrote: snip... > In other words, there is no such thing as saving the html table into a > variable. It just doesn't work that way. All that is possible is to write it > (print it) to either the screen or a file. > > Which leads back to the question that one of the other responses asked ... > what is the reason for saving it to an R object? What do you hope to > accomplish by doing that, that you can't accomplish using print() ? > > Hope this helps > > -Don > > Actually, I find myself doing this all the time with xtable output. xtable() is a very nice piece of code and it has saved me a lot of time-- but in some cases I have found the defaults/options available for output formatting rather... inflexible. The quickest solution for me has always been to capture the output of print.xtable() as an R character vector, do some editing/splicing/tweaking and then re-emit the code. I use a tweaked version of the print.xtable function that omits the final print() statement (which is what causes all the output to hit the console, or your LaTeX document or wherever else you don't want it to go) and reorganizes the output for easy editing. You can make your own using: myXtable <- edit( xtable:::print.xtable ) Then replace the lines: print(result) return(invisible(result$text)) With: result$text <- strsplit( result$text, '\n' )[[1]] return( result$text ) Now, you can use output <- myXtable( xtableObject, type = 'html' ) To capture the output as a character vector and edit it as you wish. Hope that helps! -Charlie [[alternative HTML version deleted]] __ R-help@r-project.org 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: [R] xtable - print - suppress output
I think there is a conceptual issue here.
The xtable() function does not actually create html. What it does is
add some attributes to the dataframe that is given to it. Here's an
example:
tmp <- data.frame( a =1:3, b= c('a','b','c') )
foo <- xtable(tmp)
class(foo)
[1] "xtable" "data.frame"
unclass(foo)
$a
[1] 1 2 3
$b
[1] a b c
Levels: a b c
attr(,"row.names")
[1] 1 2 3
attr(,"align")
[1] "r" "r" "l"
attr(,"digits")
[1] 0 2 2
attr(,"display")
[1] "s" "d" "s"
The output of class(foo) tells us that foo is still a dataframe. It
has two columns, a and b, just like tmp did. What it also has are
some additional attributes, in this case some alignment information,
some "digits" information, and some "display" information. And that
is *all* that xtable() did.
The real work is done by the function print.xtable(). This takes the
dataframe and its additional attributes and prints it using either
html or LaTeX syntax, depending on the 'type' argument. This is why
xtable() has relatively few optional arguments, but print.xtable()
has many. xtable() does not create html. print.xtable() creates html.
In other words, there is no such thing as saving the html table into
a variable. It just doesn't work that way. All that is possible is to
write it (print it) to either the screen or a file.
Which leads back to the question that one of the other responses
asked ... what is the reason for saving it to an R object? What do
you hope to accomplish by doing that, that you can't accomplish using
print() ?
Hope this helps
-Don
p.s.
Besides xtable, other packages that help write html include Hmisc
(already mentioned), hwriter, HTMLUtils, and R2HTML. Maybe one of
them does things enough differently to do whatever it is you're
looking for.
At 12:13 AM +0200 9/22/09, Martin Batholdy wrote:
Am 21.09.2009 um 23:59 schrieb Rolf Turner:
On 22/09/2009, at 9:52 AM, Martin Batholdy wrote:
hi,
I use xtable to convert data.frames to html tables.
But when I use the print-command I always get the whole output printed
even if I just want to save the html table into a variable;
table <- print(xtable(CERAT), type="html")
How can I suppress that output is printed?
If you don't want it printed, then why the
are you (explicitly!) using print??? Words fail me!!!
cheers,
Rolf Turner
Because I don't get html code when I only use xtable(xy)
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Livermore, CA, USA
925-423-1062
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Re: [R] xtable - print - suppress output
On Sep 21, 2009, at 6:13 PM, Martin Batholdy wrote: Am 21.09.2009 um 23:59 schrieb Rolf Turner: On 22/09/2009, at 9:52 AM, Martin Batholdy wrote: I use xtable to convert data.frames to html tables. But when I use the print-command I always get the whole output printed even if I just want to save the html table into a variable; table <- print(xtable(CERAT), type="html") How can I suppress that output is printed? If you don't want it printed, then why the are you (explicitly!) using print??? Words fail me!!! cheers, Rolf Turner Because I don't get html code when I only use xtable(xy) One further alternative that is quieter is the html function in Hmisc, however this produces a browser page display rather than an R console output. It does not output h to the console upon creation data(tli) h <- html(tli) h# the print.html method is part of Hmisc -- David Winsemius, MD Heritage Laboratories West Hartford, CT __ R-help@r-project.org 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: [R] xtable - print - suppress output
On 22/09/2009, at 10:13 AM, Martin Batholdy wrote:
Am 21.09.2009 um 23:59 schrieb Rolf Turner:
On 22/09/2009, at 9:52 AM, Martin Batholdy wrote:
hi,
I use xtable to convert data.frames to html tables.
But when I use the print-command I always get the whole output
printed
even if I just want to save the html table into a variable;
table <- print(xtable(CERAT), type="html")
How can I suppress that output is printed?
If you don't want it printed, then why the
are you (explicitly!) using print??? Words fail me!!!
cheers,
Rolf Turner
Because I don't get html code when I only use xtable(xy)
Why would you want html code stored in an R object???
I believe, although there is no telling, that what you want
to do is something like:
mung <- xtable(CERAT)
print(mung,file="gorp",type="html")
This will create a *file* of html code that a web browser can use.
cheers,
Rolf Turner
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Re: [R] xtable - print - suppress output
Am 21.09.2009 um 23:59 schrieb Rolf Turner: On 22/09/2009, at 9:52 AM, Martin Batholdy wrote: hi, I use xtable to convert data.frames to html tables. But when I use the print-command I always get the whole output printed even if I just want to save the html table into a variable; table <- print(xtable(CERAT), type="html") How can I suppress that output is printed? If you don't want it printed, then why the are you (explicitly!) using print??? Words fail me!!! cheers, Rolf Turner Because I don't get html code when I only use xtable(xy) ## Attention: This e-mail message is privileged and confidential. If you are not the intended recipient please delete the message and notify the sender. Any views or opinions presented are solely those of the author. This e-mail has been scanned and cleared by MailMarshal www.marshalsoftware.com ## __ R-help@r-project.org 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: [R] xtable - print - suppress output
On Sep 21, 2009, at 5:52 PM, Martin Batholdy wrote: I use xtable to convert data.frames to html tables. But when I use the print-command I always get the whole output printed even if I just want to save the html table into a variable; table <- print(xtable(CERAT), type="html") How can I suppress that output is printed? Perhaps by diverting it somewhere else? (after the example in xtable's help page) capture.output(print(tli.table, type="html"), file="HTout.html") R is not an HTML editor, so it would seem less than intuitive to send it to a character variable. It would not work to assign the value of capture.output since that is an invisible NULL. -- David Winsemius, MD Heritage Laboratories West Hartford, CT __ R-help@r-project.org 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: [R] xtable - print - suppress output
On 22/09/2009, at 9:52 AM, Martin Batholdy wrote:
hi,
I use xtable to convert data.frames to html tables.
But when I use the print-command I always get the whole output printed
even if I just want to save the html table into a variable;
table <- print(xtable(CERAT), type="html")
How can I suppress that output is printed?
If you don't want it printed, then why the
are you (explicitly!) using print??? Words fail me!!!
cheers,
Rolf Turner
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