thank you. yes, I got bitten by "FAQ 7.22: Why do lattice/trellis
graphics not work?" It had never occurred to me that this could be
expected behavior or a FAQ. (didn't show up in a google search for
contourplot.) Unless one knows, this is a puzzler. Thanks for the
pointer. so, a minimum working example is
require(lattice)
d <- data.frame( expand.grid( x = seq(0,6,length.out=100), y =
seq(0,6,length.out=100) ) )
d <- within(d, z <- sin( (x+y) ))
xx <- contourplot( z ~ x * y, data = d)
print(xx) ## necessary in source code, but not in interactive mode
regards, /iaw
----
Ivo Welch (ivo.we...@gmail.com)
http://www.ivo-welch.info/
J. Fred Weston Professor of Finance
Anderson School at UCLA, C519
Director, UCLA Anderson Fink Center for Finance and Investments
Free Finance Textbook, http://book.ivo-welch.info/
Editor, Critical Finance Review, http://www.critical-finance-review.org/
On Mon, Jun 1, 2015 at 1:29 PM, Jeff Newmiller <jdnew...@dcn.davis.ca.us> wrote:
> The help for for contourplot answers this question in the description of the
> formula (x) argument.
> ---------------------------------------------------------------------------
> Jeff Newmiller The ..... ..... Go Live...
> DCN:<jdnew...@dcn.davis.ca.us> 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.
>
> On June 1, 2015 7:02:00 AM EDT, Jeff Newmiller <jdnew...@dcn.davis.ca.us>
> wrote:
>>What does quartz() have to do with this? If quartz is the problem,
>>R-sig-mac would be a better place to ask. Or are you being bitten by R
>>FAQ 7.22?
>>---------------------------------------------------------------------------
>>Jeff Newmiller The ..... ..... Go
>>Live...
>>DCN:<jdnew...@dcn.davis.ca.us> 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.
>>
>>On June 1, 2015 6:24:18 AM EDT, ivo welch <ivo.we...@gmail.com> wrote:
>>>Dear R (3.2.0, osx) experts: I would like to create contourplots from
>>>irregular data frames (i.e., not a matrix on a grid). I am getting
>>>inconsistent results from lattice contourplot(). sometimes it works
>>>(quartz plot on contours), sometimes it doesn't (blank plot = nada).
>>>I have tried variations from
>>>http://stackoverflow.com/questions/10805093/contour-plot-from-data-frame
>>>, but I do not understand the problem here. contourplot gives no
>>>error messages.
>>>
>>>an example is
>>>
>>> require(lattice)
>>>
>>> d <- data.frame( x = (1:30 + rnorm(30)), y = (1:30 + rnorm(30)) )
>>> d <- within(d, z <- sin(x+y))
>>>
>>> quartz()
>>> contourplot( z ~ x * y, data = d)
>>>
>>>am I committing an error, or is there something more robust or at
>>>least verbose, perhaps?
>>>
>>>help appreciated. /iaw
>>>
>>>----
>>>Ivo Welch (ivo.we...@gmail.com)
>>>http://www.ivo-welch.info/
>>>
>>>______________________________________________
>>>R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see
>>>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 -- To UNSUBSCRIBE and more, see
>>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 -- To UNSUBSCRIBE and more, see
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.
