Please see R FAQ 7.22 7.22 Why do lattice/trellis graphics not work? ==============================================
The most likely reason is that you forgot to tell R to display the graph. Lattice functions such as `xyplot()' create a graph object, but do not display it (the same is true of *ggplot2* (http://CRAN.R-project.org/package=ggplot2) graphics, and Trellis graphics in S-PLUS). The `print()' method for the graph object produces the actual display. When you use these functions interactively at the command line, the result is automatically printed, but in `source()' or inside your own functions you will need an explicit `print()' statement. On Tue, Apr 15, 2014 at 5:51 AM, meng <laomen...@163.com> wrote: > Yes,it works ! > What's the reason for it? > > > Many thanks! > > > > > > > -- > QQ: 1733768559 > > > > > > At 2014-04-15 14:36:41,"Jim Lemon" <j...@bitwrit.com.au> wrote: >>On 04/15/2014 11:46 AM, meng wrote: >>> Hi all: >>> I met a question about the output of plot. >>> I want to output 3 plots. >>> Method1: by function histogram{lattice} >>> Method2: by function hist{graphics} >>> >>> >>> But method1 failed(the output is empty),and only method 2 works. >>> I can't find out the reason,and many thanks for your help. >>> >>> >>> #Method1---failed(the output is empty) >>> library(lattice) >>> for(i in 1:3) >>> { >>> x<-rnorm(10) >>> >>> >>> jpeg(paste("e:\\hist_",i,".jpeg")) >>> histogram(x) >>> dev.off() >>> } >>> >>> >>> >>> >>> #Method 2---works >>> for(i in 1:3) >>> { >>> x<-rnorm(10) >>> >>> >>> jpeg(paste("e:\\hist_",i,".jpeg")) >>> hist(x) >>> dev.off() >>> } >>> >>Hi meng, >>Try: >> >>print(histogram(x)) >> >>Jim >> > > [[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.
