R help - Oct 2008 - does qplot works with Sweave?

Hi Hadley:
I'm practicing writing a document using MikTex but can't make qplot to
execute. It works when using 'plot' though. Is this a normal behaviour?


\documentclass[9pt]{article}
 \title{ggplot2 example}

\begin{document}

\maketitle
\section*{Examples of using ggplot2}
 The goal is to be able to import ggplot2 graphics into the annual report.
Hadley Wickham has done a great job by creating this free R package.
Let's get some data into R from one the built-in packages:
 We'll work with the diamonds data. This dataset is really large, it
accounts for
over 50.000 records. We will demostrate  how to create nice and colorful
graphics
as well as creating some nice tabular tables with  horizontal and vertical
lines.

 <<dataAnalysis.R,echo=F>>data(diamonds)
attach(diamonds)
dsmall <- diamonds[sample(nrow(diamonds),1000),]
@
\begin{figure}[h]
<<fig.R,echo=FALSE,fig=TRUE,width=6,height=7>>qplot(carat,price,data=dsmall,colour
= color)  #THIS CODE DOESN'T WORK
@
\end{figure}


Felipe D. Carrillo  
Supervisory Fishery Biologist  
Department of the Interior  
US Fish & Wildlife Service  
California, USA

You need to explicitly print ggplot objects:
print(qplot(carat,price,data=dsmall,colour = color))

Hadley

On Tue, Oct 28, 2008 at 3:43 PM, Felipe Carrillo
<mazatlanmexico at yahoo.com> wrote:
> Hi Hadley:
> I'm practicing writing a document using MikTex but can't make qplot
to execute. It works when using 'plot' though. Is this a normal
behaviour?
>
>
> \documentclass[9pt]{article}
>  \title{ggplot2 example}
>
> \begin{document}
>
> \maketitle
> \section*{Examples of using ggplot2}
>  The goal is to be able to import ggplot2 graphics into the annual report.
> Hadley Wickham has done a great job by creating this free R package.
> Let's get some data into R from one the built-in packages:
>  We'll work with the diamonds data. This dataset is really large, it
accounts for
> over 50.000 records. We will demostrate  how to create nice and colorful
graphics
> as well as creating some nice tabular tables with  horizontal and vertical
lines.
>
>  <<dataAnalysis.R,echo=F>>> data(diamonds)
> attach(diamonds)
> dsmall <- diamonds[sample(nrow(diamonds),1000),]
> @
> \begin{figure}[h]
> <<fig.R,echo=FALSE,fig=TRUE,width=6,height=7>>>
qplot(carat,price,data=dsmall,colour = color)  #THIS CODE DOESN'T WORK
> @
> \end{figure}
>
>
> Felipe D. Carrillo
> Supervisory Fishery Biologist
> Department of the Interior
> US Fish & Wildlife Service
> California, USA
>
> ______________________________________________
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> 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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