similar to: How to calculate the number of times a given string can be displayed in the width of a grid viewport

Dear all, I'm trying to get a series of lattice levelplots to appear in viewports in a particular way but struggling to exert fine control over their appearence. There are two conditions: (a) I only want the levelplot to appear (I don't want axes, colour key, etc) in the viewport and (b) I want the levelplot to expand to the maximum allowable space in the viewport while observing

Dear R Users, I am quite surprised to see that mtext gives different results when it is used with 'pairs' and with "plot'. In the two following codes, it seems that the 'at' argument in mtext doesn't consider the same unit system. I would appreciate your comments on this issue. Sebastien ##### Pairs mydata<-data.frame(x=1:10,y=1:10) par(cex.main=1,

In help(unit) I read: The 'data' argument must be a list when the 'unit.length()' is greater than 1. For example, 'unit(rep(1, 3), c("npc", "strwidth", "inches"), data=list(NULL, "my string", NULL))'. In the newest R-versions it is not anymore allowed to let strings in the data-argument for plain units, otherwise one

Hi Deepayan and everyone, I need to add a common legend to a group of latice graphs, I have tried different ways using viewport and grid.draw without success. Here is what I have: plot.new() library(grid) library('IDPmisc') print(plot1, split=c(1,1,2,4), more=TRUE) print(plot4, split=c(2,1,2,4), more=TRUE) print(plot2, split=c(1,2,2,4), more=TRUE) print(plot5, split=c(2,2,2,4),

Short form: How do I transform the output of grid.locator() (or grid.locator(unit='npc')) to the native (or npc) coordinates of a viewport other than the top-level viewport? Thanks in advance. -Ben Long form: I would like the user to be able to click anywhere on the R graphics window. I would then like to figure out which leaf viewport the user clicked in and compute the native

Dear R-users, When one defines a grid unit object using the 'strwidth' dimension, it seems that the default plain font is assumed as the following example illustrates. Is there a way to either make use of a font option when creating a unit object or to know the factor that exists between the width of the same text printed in plain and in bold? This might be dependent on the font,

Dear R experts, I am plotting the population of students who live in a city, and in successive circular bands made of the contiguous districts that surround the city. This is a stylized figure, where I specify the area of each successive circle based on the cumulative population of students. I want to compare two sets of concentric circles across different populations - such as 'All

Colleagues, I am trying to create a PDF document in which I use margin text with two different fonts. The resulting text might be: XXXXXyZZZ where X and Z are one font and Y is the other. My plan was to do this in the following manner: mtext("XXXXX ZZZ", cex=2, adj=0.5, family=SOMEFONT) mtext("Y", cex=2, adj=??, family=DIFFERENTFONT) My question regards how to calculate

Since release of R-1.9.0 is very close, let me mention that there seems to be a problem when building vignettes for package grid (see below), e.g. yesterday's R-1.9.0 beta on Windows NT 4.0. Uwe Ligges ==================================================== building/updating vignettes for package 'grid' ... Warning messages: 1: 'viewport.transform' is deprecated. Use

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I am trying to replicate the following plot using Lattice: http://addictedtor.free.fr/graphiques/graphcode.php?graph=78 I'm having trouble with the lattice equivalent of the "oma" (outside margin) setting. I've been all through the Lattice documentation and others and also searched the lists. Below is sample code that demonstrates where I'm at (it should paste

Dear list, Following a recent enquiry, I've been playing with the idea of creating a colour gradient for a polygon, using the Grid package. The idea is to draw a number of stripes of different colours, using the grid.clip function. Below is my current attempt at this, library(grid) rotate.polygon <- function(g, angle=0){ # utility function, works fine matR <- matrix(c(cos(angle),

Hi, I want to produce two parallel rotated strips with color gradient. So far, the sample strip is something produced by this: pushViewport(viewport(x = unit(0.638, "npc"), y =unit(0.386, "npc"), width=.62, height=0.006, angle=137.2)) grid.rect(y=100:1/100, just="top", gp=gpar(col=NA, fill=colorRampPalette(c("lightgray",

Hi, I recently created a function which uses grid with a viewport constructed with grid.layout() to position four plots on a plot device. My question is what's the best way to programatically traverse each element of the viewport? The grid is 5x5 and the four plots occupy positions (2,2), (4,2), (2,4), and (4,4). Here's the viewport code: pushViewport( viewport(

Hi, This is not a bug, but an enhancement suggestion. "strwidth" only gives the width of the text according to the x-axis user coordinates, and similarly for "strheight". Even if the par setting "srt" is changed to rotate the text, the resulting width (resp. height) is in terms of the non-rotated text. Currently, if I want to know how much space to leave for

Am just feeling my way into the grid library, and cannot figure out how to define the plot limits. 3/5 of the example polygons below plot in the default 0-1 range viewport. But when I try to redefine the viewport the polygons plot in the same places. I also get the same result without employing push/pop. (As you can see from the scale I'm trying to introduce, I want to plot map polygons.)

Dear all, In an attempt to draw fill patterns in grid graphics, I have encountered a behavior of grobX that I cannot understand from the documentation. Consider this, library(grid) ## gTree g1 <- gTree(children=gList( rectGrob(0.5,0.5, width=unit(0.8,"npc"), height=unit(2,"cm")), circleGrob(r=0.3)), vp=viewport(0.5,0.5)) ##

I want to layout on screen a graphic bigger than the screen (width=16.53543, height=11.69291) but strwidth() and strheight() give wrong results. > x11(width=42/2.54, height=29.7/2.54, pointsize=12) > plot(1,1, type="n", xlim=c(0, 1), ylim=c(-1, 0), xlab="", ylab="", axes=FALSE) > strwidth("Whatever") [1] 0.08471151 > # Now resize the window and

I want to layout on screen a graphic bigger than the screen (width=16.53543, height=11.69291) but strwidth() and strheight() give wrong results. > x11(width=42/2.54, height=29.7/2.54, pointsize=12) > plot(1,1, type="n", xlim=c(0, 1), ylim=c(-1, 0), xlab="", ylab="", axes=FALSE) > strwidth("Whatever") [1] 0.08471151 > # Now resize the window and

Dear plotting experts, I need to determine the width of a string before plotting it to the current device because I want to adjust `mai' to have the necessary space available. It seems to me that this is an "hen and egg" problem: R> a <- "test" R> strwidth(a) Error in strwidth(a) : plot.new has not been called yet # ok, I need an open device R> plot(1:2,