Displaying 20 results from an estimated 6000 matches similar to: "Postscript query"
2005 Mar 09
3
function in order to plot the same graph to postscript and pdf
Hi,
I've written a function in order to plot the same graph in a postcript and in
a pdf file. Unfortunately, the second graph is always empty, i.e.:
plot.both <- function{myplot, filename}{
pdf(file=paste(filename, ".pdf", sep=""))
myplot
dev.off()
postscript(file=paste(filename, ".eps", sep=""))
myplot
dev.off()
}
yields in a
2000 Aug 17
1
Things I don't understand about the graphics interface
Using R-1.1.1 on RedHatLinux 6.2.
I've made some progress, succeeded in outputting bitmap, jpeg, and png
files. Yipee.
I did them with this command:
> dev2bitmap("whatever.bmp",res=300)
> dev.print(png, file="myplot.png", width=480, height=480)
> dev.print(jpeg, file="myplot.jpg", width=480, height=480)
> dev.print(pictex,
2005 Oct 03
2
grob questions
If I run the following example from:
http://www.stat.auckland.ac.nz/~paul/grid/doc/grobs.pdf
> grid.newpage()
> pushViewport(viewport(w = 0.5, h = 0.5))
> myplot <- gTree(name = "myplot", children = gList(rectGrob(name = "box",
+ gp = gpar(col = "grey")), xaxisGrob(name = "xaxis")))
> grid.draw(myplot)
>
2009 Apr 04
2
help with formula and data= argument
Sorry for posting this twice, but I still have not solved this problem
and am hoping for some assistance.
I am attempting to write a function that is flexible enough to respond
to the user providing a formula (with a data= argument) or not (similar
to plot(x,y) versus plot(y~x,data=data)). I have found a method to work
with this in a simple case but am having trouble determining how to
2009 Sep 02
1
get function to return object "name"?
Dear list,
I've written a function that plots subjects. Something like:
myplot <- function(subject) { plot(subject) }
Subjects are vectors, e.g. ...
s1 <- c(200,200,190,180)
... and plotting them works fine, e.g. ...
myplot(s1)
Now I want to have "s1" etc appear in the plot title, but I don't know
how to refer to this generically (the object "name"? I tried
2008 Aug 08
2
gridBase and new.page() / grid.newpage()
Hello all,
I'm trying to write a function using the gridBase package. I'd like
to push several base subplots to a larger plot constructed with grid.
However, I'm having trouble getting consistent results when running
the function when the plotting window (quartz) is closed, when it is
left open and the plot function is repeated to the same window, and
when the output is saved to a
2009 May 04
1
ellipsis problem
Hi,
I'm confused about the use of ellipsis in function arguments. I'm trying
to write a wrapper for plot to automate the combination of plot() and
points() calls for a data.frame. Some arguments seem to get passed
through to the inner plot, while others cause an error:
Error in eval(expr, envir, enclos) :
..1 used in an incorrect context, no ... to look in
As a minimal example:
tmp
2010 Apr 07
1
ggplot2, density barplot and geom_point layer
Hi,
Please consider the example below. How can I manage to overlay the points
the way I want in the second case?
Thanks, Joh
library(ggplot2)
# Modify data to match "real" case
myDiamonds <- diamonds
myDiamonds[["clarity"]] <- as.character(myDiamonds[["clarity"]])
myDiamonds[myDiamonds[["clarity"]]=="I1","clarity"] <- 1
2009 Sep 14
2
How to set default plotting colors by treatment?
Dear R-helpers,
I have a number of dataframes that looks something like this:
mydfr <- data.frame(treatment=c(rep("A",3),rep("B",3)), Xmeas=1:6,
Ymeas=c(2,4,3,3,5,6))
# except with many more variables, which I plot all the time colored
by treatment to quickly check things:
with(mydfr, plot(Xmeas, Ymeas, pch=19, col=c("blue","red")[treatment]))
# I
2010 Dec 17
2
Nested layout()
Hello,
Is it possible to call a graphing function that uses layout() multiple times and layout those outputs ? Here's a minimal example :
myplot <- function()
{
layout(matrix(1:2, nrow=1), widths = c(1, 1))
plot(1:10)
plot(10:1)
}
layout(matrix(1:2), heights = c(1, 2))
myplot()
myplot()
--------------------------------------
Dario Strbenac
Research Assistant
Cancer Epigenetics
Garvan
2007 Jun 14
2
function with xyplot
Hi,
I'm a new user trying to switch from SAS, so sorry for the beginner's
question: Suppose I have a dataframe DF that contains variables X,Y,Z. I am
trying to write a function like this:
myplot <- function(varname){xyplot(varname ~ Y, group = Z, data = DF)}.
The problem is then how to enter X into my function. If I write myplot("X")
I get an error because the argument is a
2002 Dec 11
1
Adding a title to a postscript file
I create lots of postscript files which I view with ghostview. The
beginning of the files all begin something like
%!PS-Adobe-3.0
%%DocumentNeededResources: font Helvetica
%%+ font Helvetica-Bold
%%+ font Helvetica-Oblique
%%+ font Helvetica-BoldOblique
%%+ font Symbol
%%DocumentMedia: a4 595 841 0 () ()
%%Title: R Graphics Output
%%Creator: R Software
The consequence is that in ghostview,
2009 May 14
5
Graphical output format
Dear colleagues,
Saving a plot with pdf gives a very nice result:
pdf("myplot.pdf")
par(font=1,family='serif')
plot(pressure)
dev.off()
Doing the very same with other formats (png, jpeg, tiff) gives far
worse results. Is there anything to do to make a plot in some other
format than pdf look like the pdf? Hardly any journal accepts pdf
files for figures, and most do accept png
2001 Jan 10
1
eval() bug in plot.formula() ?
I don't have time now to investigate myself,
and I'm not feeling like deciding myself if the following is a bug:
myplot <- function(dat, cex = 1.2, ...) {
if(!is.data.frame(dat <- as.data.frame(dat)))
stop("`dat' must be a data.frame")
if(any(is.na(match(c("x","y"), names(dat)))))
stop("`dat' must have a `x' and a
2008 Sep 25
2
ggplot, qplot in loop
Dear List,
yes, me again trying to work with qplot ;-)
I would like to make several single plots within a loop, like this
(simplified and so on...):
trials <- c("A","B","C")
mycolours <- ("wheat","darkolivegreen","lightgreen",
2010 Jan 14
2
Newbie mistakes saving images to files
I am encountering problems using the png() function to save around 20 charts
to separate files.
My script is conceptually structured as follows:
### <script>
png("Image %03d.png")
# the following are calls to user-defined functions I wrote that call plot,
barchart, etc. with special arguments.
myPlot("a")
myPlot("b")
myPlot("c")
2011 Jun 29
2
Testing if a variable is specified within a function & adding TRUE/FALSE options to functions
I have 2 related questions about functions.
1. I am writing a function to plot data from a time series with the form
myplot<-function(data, d1,d2) { }
Where d1 and d2 are two dates in a time series. The idea being that if no
values for d1 and d2 are entered then the function defaults to plotting the
whole time series, else it plots the data for the interval specified by d1
and d2.
I am
2005 Aug 14
1
complex expression with plotmath
Hello everyone,
I want to define a function that receives the name of two variables
(may include Greek letters and subscripts) and uses them into the
title of a plot.
My best attempt is the following:
myplot <- function(var1, var2) {
v=paste(var1,"==1 & ",var2,"==2");
plot(1:10, main=parse(,,v))
}
But when I call it with something like myplot("Q[i]",
2005 Apr 07
2
newline in lattice axis label
Hi,
I have a 3 panel xyplot with different variables in the y axis. I'm trying
to insert a newline after "Width (cm)," in the ylab argument as in the
example below. My goal is to have the y axis label broken into two lines,
split after the string just mentioned.
plotfun <- function() {
fakedf <- data.frame(A = sample(1:100, 50),
B = rnorm(50),
2004 Feb 20
1
unexpected postscript output with par(mfg)
Hi, a colleague of mine encountered some unexpected behavior regarding
the postscript output from R. It's difficult for me to tell whether
or not this is an R problem or a ghostview/gv/interpreter problem.
Just to note, I think it's exactly the same situation reported here:
http://finzi.psych.upenn.edu/R/Rhelp02/archive/25436.html
The following code produces a working plot (no