I often look for examples in http://www.cookbook-r.com/Graphs/ <http://www.cookbook-r.com/Graphs/>
> On 23 Oct 2015, at 18:27, Jeff Newmiller <jdnew...@dcn.davis.ca.us> wrote:
>
> Have you looked at the qplot function in the ggplot2 package?
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> Sent from my phone. Please excuse my brevity.
>
> On October 23, 2015 3:12:41 PM GMT+02:00, sbihorel
> <sebastien.biho...@cognigencorp.com> wrote:
>> Hi,
>>
>> Next adventure into my journey from lattice to ggplot: I would like to
>> create a custom generic function that combines multiple existing geom's
>>
>> in order to reproduce what the lattice panel.xyplot function does based
>>
>> on the type argument (ie, plotting points only for type='p', plotting
>> lines for type 'l', etc).
>>
>> My current naive attempt is:
>>
>> library(lattice)
>> library(ggplot2)
>>
>> geom_xyplot <- function (mapping = NULL, data = NULL, stat =
>> "identity",
>> position = "identity", na.rm = FALSE, type =
>> 'p', ...) {
>>
>> if (any(type=='p')){
>> geom_point(mapping = mapping, data = data, stat = stat,
>> position = position, na.rm = na.rm, ...)
>> }
>> if (any(type=='l')){
>> geom_path(mapping = mapping, data = data, stat = stat,
>> position = position, na.rm = na.rm, ...)
>> }
>> if (any(type%in%c('b','o'))){
>> geom_point(mapping = mapping, data = data, stat = stat,
>> position = position, na.rm = na.rm, ...) +
>> geom_path(mapping = mapping, data = data, stat = stat,
>> position = position, na.rm = na.rm, ...)
>> }
>> }
>>
>> data <- data.frame(x = rep(1:4, each = 25),
>> y = rep(1:25, times = 4),
>> g = rep(1:4, each = 25))
>> data$x <- data$x + 0.005*(data$y)^2-0.1*data$y+1
>>
>> ggplot(data2, aes(x, y, group = g, colour = factor(g))) +
>> geom_xyplot(type = 'l')
>>
>> I get:
>>> Error: No layers in plot
>>
>> ______________________________________________
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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.
>
> ______________________________________________
> R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see
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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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______________________________________________ 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.
