[R] ggplot2 : commands on one line vs two lines.

[John Kane]

--- On Fri, 7/24/09, Kingsford Jones <kingsfordjones at gmail.com> wrote:

> From: Kingsford Jones <kingsfordjones at gmail.com>
> Subject: Re: [R] ggplot2 : commands on one line vs two lines.
> To: "John Kane" <jrkrideau at yahoo.ca>
> Cc: r-help at stat.math.ethz.ch
> Received: Friday, July 24, 2009, 2:26 AM
> Hi John,
> 
> Thank you for the easily cut-and-pastable example.
> 
> You are providing syntactically complete code on the first
> line so the  second line is not seen as a continuation.  Try moving
> the '+' on the  second line to the first. 

ARGH! I knew it was something blindingly simple.  I belief I even thought about that and didn't try it!

Thanks 





> E.g,
> 
> pb1 <- p + geom_point(aes(Area, Pcode)) + geom_segment()
> +
>          labs(x="Area",
> y="Povs")
> pb1
> 
> 
> hth,
> 
> Kingsford Jones
> 
> On Thu, Jul 23, 2009 at 5:13 PM, John Kane<jrkrideau at yahoo.ca>
> wrote:
> >
> > I have just started using ggplot2 and I seem to be
> doing something stupid
> > in writing ggplot2 commands on more than one line.
> >
> > In the example below the commands on one line are
> working fine, but as
> > soon as I put them on two lines I get an error.  Can
> any one point out
> > what I am doing wrong? It must be something blindingly
> simple.
> >
> > Thanks
> >
> > Example
> >
> #==============================================================================
> > # sample data file
> > provs <- structure(list(Name = structure(c(8L, 11L,
> 6L, 2L, 9L, 1L, 12L,
> > 3L, 13L, 5L, 4L, 7L, 10L), .Label = c("Alberta",
> "British Columbia",
> > "Manitoba", "New Brunswick", "Newfoundland",
> "Northwest Territories",
> > "Nova Scotia", "Nunavut", "Ontario", "Prince Edward
> Island",
> > "Québec", "Saskatchewan", "Yukon"), class =
> "factor"), Pcode = structure(c(8L,
> > 11L, 7L, 2L, 9L, 1L, 12L, 3L, 13L, 5L, 4L, 6L, 10L),
> .Label = c("AB",
> > "BC", "MB", "NB", "NL", "NS", "NT", "NU", "ON", "PE",
> "QC", "SK",
> > "YT"), class = "factor"), Area = c(1936113L, 1365128L,
> 1183085L,
> > 925186L, 917741L, 642317L, 591670L, 553556L, 474391L,
> 373872L,
> > 71450L, 53338L, 5660L)), .Names = c("Name", "Pcode",
> "Area"),
> > class = "data.frame", row.names = c(NA,
> > -13L))
> >
> > library(ggplot2)
> >
> > p <- ggplot(provs, aes(x = 0, xend = Area,  y =
> Pcode, yend = Pcode))
> >
> > # commmand below is on one line
> > pa <- p + geom_point(aes(Area, Pcode)) +
> geom_segment() + xlab("Area")
> >
> > pa
> >
> > pa1 <- p + geom_point(aes(Area, Pcode)) +
> geom_segment()
> >           + xlab("Area")
> > # Error in +xlab("Area") : invalid argument to unary
> operator
> >
> >
> > # commmand below is on one line
> > pb <- p + geom_point(aes(Area, Pcode)) +
> geom_segment() + labs(x="Area", y="Povs")
> > pb
> >
> >
> > pb1 <- p + geom_point(aes(Area, Pcode)) +
> geom_segment()
> >        + labs(x="Area", y="Povs")
> >
> > # Error in +labs(x = "Area", y = "Povs") :
> > #  invalid argument to unary operator
> >
> >
> #==================================================================================
> >
> > R version 2.9.1 (2009-06-26)
> > i386-pc-mingw32
> >
> > locale:
> >
> LC_COLLATE=English_Canada.1252;LC_CTYPE=English_Canada.1252;
> >
> LC_MONETARY=English_Canada.1252;LC_NUMERIC=C;LC_TIME=English_Canada.1252
> >
> > attached base packages:
> > [1] grid      stats     graphics  grDevices
> utils     datasets  methods   base
> >
> > other attached packages:
> > [1] ggplot2_0.8.3 reshape_0.8.3 plyr_0.1.9  
>  proto_0.3-8
> >
> >
> >
> >
> >    
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> > ______________________________________________
> > R-help at 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.
> >
> 


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