Displaying 20 results from an estimated 10000 matches similar to: "Stretch the y axis in levelplot"
2008 Jan 31
1
decrease amount of ticks on y axis in lattice levelplot
Hi all,
How can I decrease the number of ticks on the y-axis in a lattice
levelplot()? I have as many ticks displayed on the y-axis as I have
columns of data (1000 columns), how can I decrease this amount of ticks,
while still properly displaying all the data?
Note that I get my data from a matrix object, in which the z-values of
the levelplot are the actual values in the matrix, whereas the
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
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
2009 May 04
4
levelplot question
Hi there,
I have a question concerning the behaviour of the colouring with levelplot. (I
hope, I manage to explain)
If I give the parameters "at" and "col.regions" like this:
at <- c(1,2,3,4,5,6)
col.regions <- c("blue","blue","blue","yellow","yellow","yellow")
Which color would have the value 3.5?
I would
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
2008 Jun 20
1
Howto reduce number of ticks in X, Y axis while still containing all the data
Hi
I am trying to plot 100 x 100 matrix data in a level plot.
The problem I have is that the x/y -axis label in ticks
are jumbled together. Thus I want X/Y axis to contain
10 ticks only, yet still plotting all the 100 data.
Is there a way to do it?
The code I have below doesn't work.
__BEGIN__
# Corr contains 100x100 matrix
corr <- cor(t(mat.data), method ="pearson")
# Plot
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)
2009 May 05
3
Heatmap without levelplot
Hi there,
as I'm not sure to understand the coloring levelplot uses, I'm looking for
another easy way to create a heatmap like this:
library(lattice)
mat <- matrix(seq(1,5, length.out = 12), nrow = 3)
mat[1,2] <- 3.5
my.at <- seq(0.5,5.5, length.out = 6)
my.col.regions <- rainbow(5)
graph <- levelplot(t(mat[nrow(mat):1, ] ), at = my.at, col.regions =
my.col.regions)
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);
2004 Dec 16
2
Unsightly lines from x*y grid in levelplot with Postscript
When I generate levelplot figures with Postscript, the lines from
the underlying grid (i.e., the x and y in z ~ x* y)
show up as faint white lines in the output. If I have a dense grid,
the lines wash out the contour colors. I can avoid the problem if
I use png instead, but that brings up other problems. Any
ideas for how I can get Postscript to not show those lines around
the cells?
Scott
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
2006 Jun 13
2
levelplot and source() problems
I have been using levelplot but have had trouble calling it inside
functions - something seems to go wrong when it's not called directly from
the R command prompt. Simplest reproducible example:
$ R --vanilla
> library(lattice)
> levelplot(matrix(1:4,2,2))
- This gives a nice plot in soothing pastel colors.
Now, with a file lptest.r containing 2 lines:
library(lattice)
2006 Sep 13
1
forcing levelplot to use relative cuts (ie cuts for each panel)
Dear guRus,
I'm having trouble producing a levelplot with relative cuts for each
panel (my data has large differences in scales, so I want to use
quantiles for each panel).
My attempts to change the 'at' argument in panel.levelplot function
have not met with success.
Below is a toy example.
xy <- expand.grid(x = 1:3, y = 1:3)
aaa <- rbind(cbind(xy, z = 1:9, site =
2005 Mar 30
1
help with plotting a grid on levelplot
I'm trying to plot a grid over a levelplot
print( levelplot( var1.pred~x+y,
data=saw.pred,
aspect=mapasp(saw.pred),
col.regions=terrain.colors(80),
main=main) )
using the data...
> saw.pred
x y var1.pred var1.var sort
1 5 5 3.3761200 256.3363 saw
2 15 5 3.3884142 499.5695 saw
3 25 5 3.5394769
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):
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
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
2013 Feb 20
1
Problem with levelplot() in a loop
Dear R users,
I am trying to print heatmaps in a loop (with a pause). Idea is to
visualize changing correlations over time and for testing I wrote this
simple (reproducible) code below.
My problem is that levelplot() does not produce any output when I run the
code (though heatmap does). Ideally I would like to use levelplot() as it
produces a neat index on the side indicating the color and the
2004 Aug 31
1
add single contour line to levelplot
Hello,
I want to add a single contour line to a levelplot but can't figure out
how to do it 'on-the-fly'. When I include the last line in the code below,
I get the following error:
Error in NextMethod("[") : Argument "subscripts" is missing, with no default
Any tips on how to fix this are greatly appreciated!
Ian Jonsen
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