Displaying 20 results from an estimated 2000 matches similar to: "add single contour line to levelplot"
2006 Feb 12
1
contour lines for levelplot
Hi,
I would like to add contour lines to a (trellis/lattice-) levelplot.
Sure, there is the "contour=TRUE" argument, but this uses
"cuts=..." (which is usually chosen very high for my plots. I guess
cuts=99 is the best you can do (?)) for plotting the contour lines.
Furthermore, I do not like the numbering of the contour lines this
way. Therefore, I tried to add a
2010 Mar 31
2
lattice: how to add points to the plot generated by levelplot()?
I am using levelplot() function from pkg:lattice and I want to add some
points
to the plot generated by levelplot()
similarly as in basic R graphic sequence: plot(...); points(...),
but it does not work.
I was reading documentation for lattice, but so far without much
success.
I would very much appreciate some tips.
Best regards,
Ryszard
2007 Mar 22
2
unexpected behavior of trellis calls inside a user-defined function
I am making a battery of levelplots and wireframes for several fitted
models. I wrote a function that takes the fitted model object as the
sole argument and produces these plots. Various strange behavior
ensued, but I have identified one very concrete issue (illustrated
below): when my figure-drawing function includes the addition of
points/lines to trellis plots, some of the
2009 Apr 08
1
how to adjust titles on sub-plots in levelplot / contour plot?
Hello,
I have a (relatively long) function script that generates a levelplot.
I don't want to include all of the code, so I have attached in file
"miniDataSet.csv" an example for the data set "miniDataSet" that is called
below.
The function works OK, except that when the variables in the "splitCol"
column get very large (as they are in this data set I
2004 Apr 27
1
helps on levelplot
I'm a new user of levelplot, and are not familiar with the terminology
very well. Is the bar alongside the levelplot indicating color or shade
call "colorkey"? I have to adjust the size of its label, but couldn't
make it so far. This is how I did:
levelplot(z~x*y, grid, at=seq(0,1,by=0.1),
colorkey=list(labels=list(cex=2)))
But I got error message "Error in
2012 Jun 16
2
aligning axis labels in a colorkey from levelplot
R does a great job with the fine details regarding plots. e.g in the
following:
library(lattice)
y <- -4:4/10
xyplot(y~1, las=1)
the y axis is labelled with numbers -0.4, -0.2, 0.0, 0.2, 0.4 with the
numbers aligned on the decimal point.
How do I get the same behaviour in the colorkey of a levelplot? e.g.
levelplot(matrix(y,3,3))
the numbers in the colorkey seem left-aligned, and
2012 Jan 06
1
Can levelplot colorkeys display a logarithmic scale evenly?
I'm using the {lattice} "levelplot" function to make a (more or less) 2-d
histogram, and for the most part it's working fine with my data. However, I
can't get the color key to do what I need. I can give it labels and custom
cutoffs, but my cutoff lines (and hence my labels) aren't evenly spaced, instead
they're more-or-less logarithmic, starting at
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):
2011 Apr 06
2
Layout within levelplot from the lattice package
Hi,
I'm a novice with levelplot and need some assistance! Basically, I want a window
which contains 6 levelplots of equal size presented in 3 columns and 2 rows.
I've tried to approach it two ways. The first way leads to this question:
Is there any way to concatenate levelplots from a factor vertically as opposed
to horizontally? I'd like to pair the levelplots by factor.2 on
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)
2014 Jun 10
2
Como controlar la altura de "colorkey" en levelplot de RatserVis
Hola miembros de la lista,
Estoy utilizando la función levelplot del paquete rasterVis para graficar
un raster y quiero controlar la altura de la referencia de color (colorkey)
del mapa, pero cuando cambio valores en el argumento "height" no parece
provocar cambios. Alguna idea de por qué no está funcionando?
> cobertura
class : RasterLayer
dimensions : 780, 1296, 1010880
2009 Nov 09
1
How to change color the default in levelplot() ?
Dear R communities
May I seek your advices on how to change color the default in levelplot(), e.g. from the default of pink and light blue, to e.g. red and green ?
The levelplot function has 1 of the arguments being panel (which is actually panel.levelplot), but I am not sure where the commands to alter the color.
For example, I type:
p1<-levelplot(my.mat,colorkey=FALSE),
how could I
2004 Feb 11
1
levelplot colorkey
Dear R'ers,
I've scanned available documentation and the web, but I can't seem to
figure out where I've gone wrong in adding numbers to scale the colorkey in
levelplot (Lattice package). For example,
levelplot(z, contour=T, labels=T, cuts=10, region=T,...
colorkey=list(T, space="bottom",
at=seq(0,2000,length=20),
2012 May 29
1
lattice: add a marginal histogram on top of the colorkey of a levelplot?
Lattice experts:
Can you think of a way to produce a levelplot as below and then add a histogram of the z variable to the top margin of the plot that would sit on top of the color key?
x <- seq(pi/4, 5 * pi, length.out = 100)
y <- seq(pi/4, 5 * pi, length.out = 100)
r <- as.vector(sqrt(outer(x^2, y^2, "+")))
grid <- expand.grid(x=x, y=y)
grid$z <- cos(r^2) *
2007 Oct 23
1
Custom colourkey spacing in levelplot, contourplot
Dear R gurus,
I have got stuck on how to customise the colorkey generated by
levelplot and contourplot, in the lattice package. This best
illustrated by an example:
library(lattice)
levelplot(volcano^20/1e45,at=c(0,0.001,0.01,0.1,1,10))
The reason for raising the volcano dataset to the 20th power is to
create a dataset with a large vertical exaggeration - this is similar
in nature to the data
2009 May 02
1
lattice levelplot axis + custom annotations
How would I set the "scales" property of a lattice levelplot, so that
I can add specific annotations at specific positions?
For example, I have a 200 x 1000 element levelplot. Along the y-axis
(along the 1000-element axis) I would like to add annotations on the
left side of the levelplot at elements 120, 300, 500, and 805, which
represent clusters of interest.
Currently I have
2012 Dec 30
2
levelplot
I have two questions;
Do you know how to take out axes in a levelplot? Me doesn't work axes =
FALSE
And I would like to fix the values range of colorkey or legend from my
rainbow col.regions, dou you know how can I fix this values independent
of values database?
Thanks and happy new year!
[[alternative HTML version deleted]]
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);
2008 May 11
1
positioning of color key in levelplot
Is there a way of positioning the color key in levelplot when the axes are on a categorical (rather than numerical) scale? I've put some sample code below. I need to add a secondary y axis to the right side of my plot but then the labels interfere with the color key (which is currently on the right side). Is there a way to shift the color key over a bit more to the right? I've tried
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