Displaying 20 results from an estimated 9000 matches similar to: "levelplot"
2003 Aug 21
2
levelplot behaviour for panel with constants
In the example:
x = rep(c(0,0,1,1),4)
y = rep(c(0,1,0,1),4)
z = c(1,0,1,0,0,0,1,1,0,1,0,0,1,1,1,1)
f = as.factor(c(rep("a",4),rep("b",4),rep("c",4),rep("d",4)))
levelplot(z~x+y|f,data.frame(x=x,y=y,z=z,f=f))
I noted that the last ("d") plot remains empty. I guess the
reason for this is that the values are constant (1), but I consider
it more
2003 Aug 29
1
levelplot behaviour when "at" cuts the z range
Consider the following examples:
library(lattice)
x = c(1,1,2,2)
y = c(1,2,1,2)
z = 1:4
levelplot(z~x+y,at=c(.5, 1.5, 2.5, 3.5, 4.5)) # correct
levelplot(z~x+y,at=c(.5, 1.5, 2.5)) # ?
The second plot is clearly incorrect. However, I don't know
what correct behaviour is: ignore everything above 2.5 and
issue a warning? Reject at values that do not cover the
data range, and issue an
2004 Aug 10
1
date axes and formats in levelplot
Hi all (and particularly Deepayan),
A while back Deepayan helped me with the query in the text below (thanks
again). Specifically it was about changing the way that dates plotted on
the axes of lattice plots.
While this works using xyplot, everything comes apart when I use
levelplot. The axis labels on the date axis are shown as the integer
representation of the date (number of seconds since
2006 Feb 06
2
panel.levelplot() for 2D histograms
Dear R-wizards,
I'm trying to plot "binned scatterplots", or 2d histograms, if you wish, for
a number of groups by using the lattice functionality
it works fine for one group at a time, and probably I could find a
work-around, but I prefer to do it the elegant way
here's an example of what I want, what I tried and where it goes wrong:
require(gregmisc)
require(lattice)
#toy
2006 Jan 09
1
How to use filled.contour(x,y,z) data for levelplot(z)?
Dear all,
We used the following function to create a spatial plot of a raster image:
filled.contour(xx,yy,zz, color = terrain.colors, nlevels=10,
main=naamjaar, plot.axes = { contour(Xcoord/1000,Ycoord/1000,lim.data,
nlevels = 4, col=4,drawlabels = T, axes = FALSE, frame.plot = FFALSE,
add = TRUE);axis(1); axis(2);
2003 Oct 27
3
Lattice: no grid name space
The following now occurs to me when I try to
load lattice (R 1.7.1, debian stable):
> library(lattice)
Error in loadNamespace(i, c(lib.loc, .libPaths()), keep.source) :
package `grid' does not have a name space
Error in library(lattice) : package/namespace load failed
I did an update.packages() as root recently.
Any idea what's wrong?
--
Edzer
2006 Nov 27
2
[R-sig-Geo] plot() and Jpeg() increase font size and resolution
Thanks to Edzer and Roger,
I can now plot with increased font sizes. However, jpeg still does not
reproduce these, nor does it show up in high quality. What I would like
to do is produce some highresolution jpegs.
Any help would be appreciated
Thanx
Herry
R2.4 on Mandriva 10.2 linux.
Dr Alexander Herr
Spatial and statistical analyst
CSIRO, Sustainable Ecosystems
Davies Laboratory,
University
2003 Dec 22
0
(PR#6005) Re: [R] lattice: levelplot: error: min not meaningful
Actually, this is supposed to work (and is given as an example in my DSC-2003
paper), and at some point, did. It seems this was broken as a consequence of
a careless change in panel.levelplot. The first 5 lines should have been
label.style <- match.arg(label.style)
x <- as.numeric(x[subscripts])
y <- as.numeric(y[subscripts])
minXwid <- min(diff(sort(unique(x))))
2018 Sep 04
2
[FORGED] Re: plotmath degree symbol
Hi
Thanks for that, but I still cannot confirm on ...
sudo docker run -v $(pwd):/home/work/ -w /home/work --rm -ti
rocker/r-ver:3.5.1
Could you please read the comments within the "Cairo Fonts" section of
the ?X11 help page, in case that offers some explanation.
Paul
On 29/08/18 02:15, Martin M?ller Skarbiniks Pedersen wrote:
> On Fri, 24 Aug 2018 at 19:53, Edzer Pebesma
>
2004 Feb 25
2
levelplot add line
R folks,
I can't seem to find the instructions in the help files for the lattice
package that explain how to add lines, such as with lines() or ?, to a
levelplot. I'd be grateful if someone could point me in the proper direction.
Cheers,
Jeff
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Jeff Jorgensen
Center for Limnology jcjorgensen at wisc.edu
2007 Jul 24
3
Overlaying a single contour from a new data array in levelplot
Dear R-Help community,
I am trying to overlay a single contour line over a correlation plot using
levelplot in the lattice package. These are the two arrays:
1) a correlation plot over Africa - so each grid square is a different colour
dependent on correlation - this is in an array: result_cor with dim[465,465]
2) a single contour line from a ***different data source*** - this is from data
2011 Sep 14
1
S4 method dispatch
List,
In order to get rid of some old, unreadable S3 code in package sp, I'm
trying to rewrite things using S4 methods. Somewhere I fail, and I
cannot sort out why. In order to isolate the problem, I created two
functions, doNothing<- and dosth, and both should do nothing. The issue
is that in most cases they do nothing, but in some cases dosth(obj)
changes the class of obj and breaks with
2006 Apr 18
2
typos in src/main/gram.y (PR#8780)
In src/main/gram.y, the documentation for R_ParseVector has a wrong
signature:
SEXP R_ParseVector(TextBuffer *text, int n, ParseStatus *status)
should be
SEXP R_ParseVector(SEXP text, int n, ParseStatus *status)
In addition, the two occurrences of "IOBuffer" in the documentation
should be replaced by "IoBuffer".
version.string = Version 2.3.0 beta (2006-04-14 r37779)
2006 Mar 04
1
xyplot/levelplot: thickness of tickmarks
Hi,
if I use the xyplot (or levelplot) function (lattice library) with
the option axs="i", I have the problem that the tickmarks lie a bit
outside the "plot-box". Consider for example:
library(lattice)
x<-seq(0,1,by=0.01)
y<-seq(0,1,by=0.01)
xyplot(y~x,type="l",xlim=c(0,1),ylim=c(0,1),scales=list
2006 Jun 03
1
default value for cutoff in gstat variogram()
I wonder what is the default value for the argument 'cutoff' when not
specified in the variogram.formula function of gstat. Computing
variogram envelops within gstat, I am comparing the results obtained
with variog in geoR and variogram in gstat, and it took me a while
before understanding that the cutoff default value is not the maximum
distance.
Can Edzer tell us about it?
All the
2016 Jun 09
1
cumsum method in Math group
When running
a = runif(10)
class(a) = "foo"
Math.foo = function(x, ...) {
NextMethod(.Generic)
}
signif(a, 3)
cumsum(a)
I don't understand why cumsum strips the class, but signif does not.
Both claim in the documentation that "These are generic functions:
methods can be defined for them individually or via the ?Math? group
generic."
--
Edzer Pebesma
Institute for
2007 Oct 31
3
thicker axis in levelplot
Dear R-help community,
I need to find out how to make the black axis line around my plot thicker in
levelplot, I cannot find the correct command in ?levelplot or ?par - or if it is
there I cannot get it to work - any help would be more that appreciated!
Here's an example script - I would want the code for making the axis bordering
the plot thicker:
x<- seq(pi/4, 5*pi,length=100)
2018 Aug 24
4
plotmath degree symbol
In plotmath expressions, R's degree symbol, e.g. shown by
plot(1, main = parse(text = "1*degree*C"))
has sunk to halfway the text line, instead of touching its top. In older
R versions this looked much better.
--
Edzer Pebesma
Institute for Geoinformatics
Heisenbergstrasse 2, 48151 Muenster, Germany
Phone: +49 251 8333081
2005 Apr 20
1
overlaying a contour line in a levelplot
Hello there,
I am creating a series of images using levelplot but I also want to
overlay a contour for a particular value as reference. Here is the
levelplot command for the image:
print(levelplot(d~x+y,data=t,cuts=20,scales=list(draw=F),xlab=NULL,ylab=
NULL,col.regions=heat.colors(100)[100:1]),split=c(1,1,1,1),more=T)
and then to add the contour plot (I only want a contour at level 5):
2008 Oct 17
1
padding "bug" in lattice/levelplot
Hello,
I have encountered some unexpected behaviour with levelplot that may
simply be a misunderstanding on my part.
If I create a levelplot from a matrix with named columns, some
"padding" space appears at the top and bottom of the heatmap. Here is
an example, and I've used panel.fill to make the space I'm speaking of
evident (in green).