Displaying 20 results from an estimated 30000 matches similar to: "image function"
2012 May 13
1
heatmap
Dear all,
I have a data set which is 100 \times 100 matrix.
I made a heatmap of the data. The xlim and ylim
are both shown to be c(0,1). I want to make both the
xlim and ylim to be c(0,100). So the heatmap correspond to
the 100 \times 100 locations.
Thank you.
Hannah
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2008 Sep 22
1
SmoothScatter plot range issue
Hello,
I am attempting to use smoothScatter to plot a heatmap of locations of
events in an x-y axis. When I plot the heatmap without passing xlim and ylim
parameters, it fills the plot area but the perspective is a bit skewed. I
would like to standardize these plots to a uniform window size that does not
depend on the range of values in the dataframe. However, when I resize the
plot using xlim or
2012 Jul 01
4
geom_boxplot
Also, it is possible to change "ylim" also?
2012/7/1 li li <hannah.hlx@gmail.com>
> Dear all,
> I have a few questions regarding the boxplot output from the
> "geom_boxplot" function.
> Attached is the output I get. Below are my questions:
>
> 1. How can I define the xlab and ylab myself?
> Also I would like to remove
2012 Aug 06
4
Overlay Histogram
Dear all,
For two sets of random variables, say, x <- rnorm(1000, 10, 10) and y
<- rnorm(1000. 3, 20).
Is there any way to overlay the histograms (and density curves) of x and y
on the plot of y vs. x?
The histogram of x is on the x axis and that of y is on the y axis.
The density curve here is to approximate the shape of the distribution
and does not have to have area 1.
Thank you
2006 Feb 22
4
heatmap.2 in gplots package
Hello all,
I am using the heatmap.2 function in the gplots package. I want to supress the reordering of the columns of the data matrix i pass to the function. I used the statement,
heatmap.2(z,Colv=FALSE,dendrogram="row",col=redgreen(75))
where z, is the matrix of data. The output i want should have the rows reordered along with the dendrogram and the columns should be in the original
2016 Apr 18
2
heatmap2 error key
Hi I am trying to understand what happen with the heatmap.2 code that it
used to work (last used in October 2015). I am able to get a heatmap but my
colour key doesn't come up and instead I get an error in all my files the
used to work. Does anyone has any idea of what could have changed? or how
to fix this.
Thanks.
#
Error in seq.default(min.raw, max.raw, by = min(diff(breaks)/100)) :
2004 Jan 04
5
Analyzing dendograms??
I have used heatmap to visualize my microarray data. I have a matrix of
M-values. I do the following.
#The distance between the columns.
sampdist <- dist(t(matrix[,]), method="euclidean")
sclus <- hclust(sampdist, method="average")
#The distance between the rows.
genedist <- dist(matrix[,], method="euclidean")
gclus <- hclust(genedist,
2010 Feb 19
1
color graph in multiple plots
Hi,
I would like to distinguish my plots using colors but I got error message. How do I correct that?
plot(ecdf(z), main ="CDF for observed and simulated weighted sum",type="l",lwd=2,col="blue",
xlab="Weighted sum (mm)", ylab="Cumulative Percent", xlim=c(0,15), xaxs ='i', yaxs ='i',ylim=c(0,1))
par(new=TRUE)
2012 Dec 13
3
Combined Marimekko/heatmap
Hi all,
I'm trying to figure out a way to create a data graphic that I haven't ever seen an example of before, but hopefully there's an R package out there for it. The idea is to essentially create a heatmap, but to allow each column and/or row to be a different width, rather than having uniform column and row height. This is sort of like a Marimekko chart in appearance, except that
2004 Jul 21
2
Cutting heatmap dendrogram
Hello,
I've been clustering my data using hclust and cutting the resulting tree
with cutree. Separately, I visualize the clusterings with heatmap. Is it
possible to have the dendrogram on the heatmap reflect the cutree results?
That is, instead of having one large dendrogram, it would have 4 or 25 in
the example below. Any guidance on if that's possible or not, and what
kinds of
2010 Jul 22
5
legend in R plot
Hi all,
I am have some difficulty with the legend function.
I need to add a legend to describe the different line types in a plot. The
legend box is small.
It did not include sufficient length of each line type to help distinguish
the differnt line types.
Is there a way to fix this.
Thank you
Hannah
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2004 Sep 22
1
pairs, panel.functions, xlim and ylim
Hi,
I have the following problem.
I wanted to get a matrix of scatterplots and I used pairs.
I wanted to add the line y=x in each plot and I created a panel
function for this scope.
I used points and abline in the following way:
## put y=x in each plot
panel.lin<- function(x, y)
{
points(x,y, pch=21, bg=par("bg"), col = "black",cex=2)
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
2007 Nov 15
1
Writing a helper function that takes in the dataframe and variable names and then does a subset and plot
Hi,
I have a large dataframe than I'm writing functions to explore, and to
reduce cut and paste I'm trying to write a function that does a subset
and then a plot.
Firstly, I can write a wrapper around a plot:
plotwithfits <- function(formula, data, xylabels=c('','')) {
xyplot(formula, data, panel =
function(x,y, ...) {
panel.xyplot(x,y,
2004 Mar 19
5
asp=1 and aspect ratio
Hi everyone
I want a square scatterplot with abline(0,1) going exactly through the
SW and NE corners. By "square" I mean that the plotting region is
exactly square, and that the axis limits are identical.
x <- 1:20
y <- x+rep(c(-1,1),10)
lims <- range(c(x,y))
None of the following do this:
plot(x,y) ; abline(0,1) #not square
plot(x,y,asp=1);abline(0,1) #diagonal
2009 Sep 04
2
plot positive predictive values
Hi,
I'm trying to fit a smooth line in a plot(y ~ x) graph.
x is continuous variable
y is a proportion of success in sub-samples, 0 <= y <= 1, from a Monte
Carlo simulation.
For each x there may be several y-values from different runs. Each run
produces several sub-samples, where "0" mean no success in any sub-
sample, "0.5" means success in half of the
2008 May 14
4
Heatmap.2 - eliminate cluster and dendrogram
Using the heatmap.2 function, I am trying to generate a heatmap of a
2 column x 500 row matrix of numeric values. I would like the 1st
column of the matrix sorted from the highest to the lowest values -
so that the colors reflected in the first column of the heatmap (top
to bottom) go from red to green.
After sorting the matrix (z), I tried the following command, but the
data remains
2013 Apr 12
1
support for POSIXct classes in image.default axes
Hello, I would like to suggest the following change to image.default in
src\library\graphics\R\image.R:
98c98
< plot(NA, NA, xlim = xlim, ylim = ylim, type = "n", xaxs = xaxs,
---
> plot(x[1], y[1], xlim = xlim, ylim = ylim, type = "n", xaxs = xaxs,
This provides all the support of axis.POSIXt that plot.default gives,
currently the default new plot in
2005 Jul 19
1
initial points for arms in package HI
Dear R-users
I have a problem choosing initial points for the function arms()
in the package HI
I intend to implement a Gibbs sampler and one of my conditional
distributions is nonstandard and not logconcave.
Therefore I'd like to use arms.
But there seem to be a strong influence of the initial point
y.start. To show the effect I constructed a demonstration
example. It is reproducible
2005 Jul 26
5
Plot zooming i.e. changing ylim according to xlim
Dear R-gurus,
I would like to zoom in a plot, e.g. I select a region on the x-axis and
then I would like the ranges on the y-axis to change accordingly.
Is it possible to do this with existing functions, or do I have to
invent some data selection before plotting?
See below a short example, where I select ylim with trial and error,
which I want to avoid.
Cheers, Henrik Andersson