Displaying 20 results from an estimated 4000 matches similar to: "adding text to the top corner of a lattice plot"
2000 Apr 28
1
graphics: par(mfg=c(i,j,r,c)) (PR#529)
Full_Name: Craig A. McKinstry
Version: 1.0.0
OS: WinNT4.0 and Win98
Submission from: (NULL) (192.101.100.130)
When creating a multi-panel graphic, the command par(mfg=c(i,j,r,c)) is
supposed
to allow the user free movement between graphics panels to develop each panel
separately. This works for the first invocation of par(mfg=c()) and for the
first panel panel specified, but not for subsequent
2011 Jan 31
1
arranging pie charts in a matrix layout with row/col labels
Hi, I have a vector of data, that I group based on two factors via
tapply. For each such grouping I would like to plot a pie chart. I
can layout these pie charts in a matrix layout, correpsonding to the
levels of the two factors. But I am getting stuck on how to label the
rows and colums. My current approach looks like this:
x <- data.frame(obs=sample(c('low', 'high'),100,
2003 Nov 10
10
shuffling a vector
Hi,
I'me trying to write a function that will shuffle a vector. At the
moment I'm baically making a vector of randomized indices and then
making a new vector from the original one using these random indices.
However, is there an alternative (more elegant) method to do this? I
tried help.search('shuffle') but it does'nt return anything relevant.
Thanks,
2003 Nov 10
5
attaching data to any object
Hi,
is the following possible - in a given session I make a lot of objects
and save when exiting. Usually I note down seperately what each object
is about. Is it possible to attach data to any object which would
essentially be a short note explaining the meaning of it?
Thanks,
-------------------------------------------------------------------
Rajarshi Guha <rxg218 at psu.edu>
2009 Jun 23
2
an idiom to handle i'th element of a set of lists simultaneously
Hi, I have 3 lists, x, y, z and I'd like to perform a calculation over all
the lists simultaneously. If it were a single list I could use lapply, but
for more than one list I'm using a for loop. Is there an idiom that would
let me use something like lapply, but the function specified to lappy would
have access to an element from each list? (In Python, I would have used for
a,b,c in
2004 Sep 15
2
efficient submatrix extraction
Hi,
I have a matrix of say 1024x1024 and I want to look at it in chunks.
That is I'd like to divide into a series of submatrices of order 2x2.
| 1 2 3 4 5 6 7 8 ... |
| 1 2 3 4 5 6 7 8 ... |
| 1 2 3 4 5 6 7 8 ... |
| 1 2 3 4 5 6 7 8 ... |
...
So the first submatrix would be
| 1 2 |
| 1 2 |
the second one would be
| 3 4 |
| 3 4 |
and so on. That is I want the matrix to be evenly divided
2010 Jul 27
3
xyplot with all columns of a data.frame on a single plot
Hi, I have a data.frame with columns named X, D1, D2, D3
I know I can get a single plot with 3 curves by doing
xyplot(D1 + D2 + D3 ~ X, data)
but in some cases I might have columns D1 ... D10.
Is there a way to plot all 10 columns without having to specify each
individual term?
(By analogy with formulae in lm, I thought, xyplot(. ~ X, data) would
work, but it didn't)
Thanks,
--
2005 May 26
5
a more elegant approach to getting the majority level
Hi, I have a factor and I would like to find the most frequent level.
I think my current approach is a bit long winded and I was wondering if
there was a more elegant way to do it:
x <- factor(sample(1:0, 5,replace=TRUE))
levels(x)[ which( as.logical((table(x) == max(table(x)))) == TRUE ) ]
(The length of x will always be an odd number, so I wont get a tie in
max())
Thanks,
2003 Sep 03
3
plotting a distribution curves
Hi,
is there a way to plot distribution curves (say normal or chi sq etc)
from within R?
For example I looked up the *chisq family of functions but I'm not sure
as to how I would use them to generate a plot of the chi sq distribution
(for arbitrary d.o.f).
Thanks,
-------------------------------------------------------------------
Rajarshi Guha <rajarshi at presidency.com>
2011 Jan 31
2
identify subsets based on two grouping factors
Hi, I have a data.frame that has a categorical variable, for which I
would like to look at the distribution of levels of this variable,
based on a grouping of two other variables.
As an example:
x <- data.frame(obs=sample(c('low', 'high'),100, replace=TRUE),
grp1=sample(1:10, 100, replace=TRUE),
grp2=runif(100))
cut.grp1 <- cut(x$grp1, 3)
cut.grp2 <- cut(x$grp2, 3)
2005 Feb 15
1
lattice multiple plots per page
Dear R-sters,
I was wondering if anyone has encountered the following issues. I've
figured out how to get multiple levelplots [library(lattice)] on a single
plot. However, when I add text (adding axis labels for the entire four
panel plot) the text is missing when I insert the *.eps file I've created
into my LaTeX document (via MikTeX-WinEdt). And, I've just upgraded to R
2003 Sep 14
1
title for plot contain 4 subplots
Hi,
I'm plotting 4 graphs on one page (2x2 matrix) but I cant seem to get
the title for the whole page right.
I'm doing:
op <- par(mfrow = c(2,2), pty="s")
hist(var$V2, breaks="FD",main="Euclidean Metric", xlab="Sum of 3NN ...
hist(var$V2, breaks="FD",main="Manhattan Metric", xlab="Sum of 3NN ...
hist(var$V2,
2003 Oct 02
4
using a string as the formula in rlm
Hi,
I am trying to build a series of rlm models. I have my data frame and
the models will be built using various coulmns of the data frame.
Thus a series of models would be
m1 <- rlm(V1 ~ V2 + V3 + V4, data)
m2 <- rlm(V1 ~ V2 + V5 + V7, data)
m3 <- rlm(V1 ~ V2 + V8 + V9, data)
I would like to automate this. Is it possible to use a string in place
of the formula?
I tried doing:
fmla
2003 Oct 01
1
question about predictions with linear models
Hi,
this question is probably very obvious but I just cant see where I
might be going wrong.
I'm using the lm() function to generate a linear model and then make
predictions using a different set of data.
To generate the model I do (tdata & pdata are matrices of observations
and parameters, tdepv, pdepv are response vectors)
x <- as.data.frame(tdata)
x$tdepv <- tdepv
2007 Aug 13
4
vertically oriented color key in heatmaps
Hi, I have some data which I was plotting using image(). I wanted to
add a vertical color key to the plot and I found that heatmap.2 in
gplots does let me add a color key. However, I was thinking of a
vertical bar with the color range rather than the style that gplots
provides.
Is there any package (or code snippet) that would let me add a
vertical color key to an image() or heatmap
2003 Mar 03
2
saving a plot to a file
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1
Hi,
I'm a new user of R and have managed to make a plot of a histogram. Is there
any way I set the title and axes labels and then save the plot as an image
(png/gif)?
Thanks
- --
- -------------------------------------------------------------------
Rajarshi Guha <rajarshi at presidency.com> <http://jijo.cjb.net>
GPG
2004 Feb 06
3
a grep/regexpr problem
Hi,
I'm trying to parse lines of the form:
dan001.hin (0): fingerprint={256, 411, 426, 947, 973, 976}
What I need is the sequence of number between {}. I'm using grep as
match <- grep("{([0-9,\s]*)}",s,perl=T,value=T)
where s is a character vector.
But all I get is the whole string s. I tried using regexpr in an attempt
to get just the sequence I wanted:
match <-
2005 Apr 04
5
a question about box counting
Hi,
I have a set of x,y data points and each data point lies between (0,0)
and (1,1). Of this set I have selected all those that lie in the lower
triangle (of the plot of these points).
What I would like to do is to divide the region (0,0) to (1,1) into
cells of say, side = 0.01 and then count the number of cells that
contain a point.
My first approach is to generate the coordinates of these
2003 Dec 03
3
checking for identical columns in a mxn matrix
Hi,
I have a rectangular matrix and I need to check whether any columns
are identical or not. Currently I'm looping over the columns and
checking each column with all the others with identical().
However, as experience has shown me, getting rid of loops is a good idea
:) Would anybody have any suggestions as to how I could do this job more
efficiently.
(It would be nice to know which
2004 May 20
2
column sorting a matrix with indices returned
Hi,
I'm trying to translate some Matlab code to R and I'm trying to
implement the behavior of Matlab's sort() which when applied to a matrix
will sort the columns returning the column sorted matrix as well as a
matrix of permuted indices.
Doing:
> x <- matrix(c(3,4,2,6,3,4,8,7,5), nr=3)
> x
[,1] [,2] [,3]
[1,] 3 6 8
[2,] 4 3 7
[3,] 2 4 5