Displaying 20 results from an estimated 12000 matches similar to: "Problem with "missing" in "local" (PR#1241)"
2002 Nov 22
4
Small change to plot.xy
Hi everyone,
Is there any reason why we should not automatically coerce a factor
supplied as an argument to col in a plotting function? The following
modification (to R-1.6.1) seems pretty harmless
> plot.xy
function (xy, type, pch = 1, lty = "solid", col = par("fg"),
bg = NA, cex = 1, ...)
{
if (is.factor(col))
col <- codes(col)
2001 Apr 11
5
replicating lists
Hi Everyone,
At the moment it is not possible to replicate complex lists, but only
simple ones:
> rep(list(fred = 1:10), 10) # works fine
> rep(list(fred = 1:10, happy = "squash"), 10)
Error in rep(list(fred = 1:10, happy = "squash"), 10) :
Unimplemented feature in rep
There is nothing in ?rep that suggests that the latter should not work,
and I think it would
2002 Oct 08
3
hash argument of new.env()
Hi everyone,
There is no mention in ?new.env (R-1.6.0) of what the effect of setting
the hash argument of new.env() actually does. What does it mean in
performance terms to say that "the environment will be hashed"?
Thanks, Jonathan.
--
Jonathan Rougier Science Laboratories
Department of Mathematical Sciences South Road
University of Durham
2001 Jan 09
3
Inconsistent behaviour in solve (PR#805)
I find this a bit puzzling ...
> solve(matrix(c(5, 2, 3, 1), 2, 2), c(Inf, 3))
[1] NaN Inf
> solve(matrix(c(5, 2, 3, 1), 2, 2)) %*% c(Inf, 3)
[,1]
[1,] -Inf
[2,] Inf
I would expect the answer to be c(-Inf, Inf), so why has the -Inf
been replaced by NaN in solve?
Cheers, Jonathan.
--please do not edit the information below--
Version:
platform = sparc-sun-solaris2.7
arch = sparc
2002 Feb 20
1
Pivoting in chol
Hi Everyone,
I have modified my version of R-1.4.1 to include choleski with pivoting
(like in Splus). I thought R-core might consider including this in the
next version of R, so I give below the steps required to facilitate
this.
1. Copied Linpack routine "dchdc.f" into src/appl
2. Inserted line F77_SUBROUTINE(dchdc) in src/appl/ROUTINES
3. Inserted "dchdc.f" into
2000 May 19
7
variance of a scalar (PR#546)
I was surprised to find that the variance of a scalar, using
var(), is NA. Surely this should be zero?
Cheers, Jonathan.
--please do not edit the information below--
Version:
platform = sparc-sun-solaris2.7
arch = sparc
os = solaris2.7
system = sparc, solaris2.7
status = Patched
major = 0
minor = 99.0
year = 2000
month = February
day = 9
language = R
Search Path:
.GlobalEnv,
2002 Oct 10
1
make check when installing R-1.6.0
This is the result of my make check, could anyone help me out on this
one?
Formats: text example
running code in 'base-Ex.R' ...*** Error code 1
make: Fatal error: Command failed for target `base-Ex.Rout'
Current working directory /apps/R/R-1.6.0/tests/Examples
*** Error code 1
make: Fatal error: Command failed for target `test-Examples-Base'
Current working directory
2001 Oct 03
1
tiny typo in optim/N-M documentation (PR#1109)
In the optim() documentation, the control parameter "maxit" says
"There is no other stopping criteria." That should be "are", or
"criterion" ...
While I'm at it -- poking at the code a little bit, it looks as if the
initial simplex is set from the initial point by displacing each
parameter value by max(0.1,0.1*pmax(fabs(Bvec))), where Bvec is the
2001 May 23
3
multidimensional list
Hi all,
is it possible to create a multidemensional list? Haven't found anything
in the list() help page.
Thanks, Sven
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2002 Sep 10
2
Problems with rbind
Dear list
I have a simple question that I have a mental block on:
Having used a loop (from i = 1 to n) to assign some numerical values to
row.list[[i]]
e.g. row.list[[3]]= 0 1
I am wanting to combine the output into a simple matrix.
for example, if I combine the output from persons 1 to 3 into a matrix, I
thought I could do :
h<-rbind(row.list[[1]]:row.list[[3]])
However, I get the
2002 Feb 28
1
trying to build matrix for tests...
Okay, I stumped. I'm trying to build a matrix or data.frame that consists of
values by group. For example,
resid, group
574 0.536196370873122 E
575 0.93191093696265 E
576 -1.27116094894117 A
577 -1.05159666055027 A
578 0.398273458301184 D
579 0.586373126102573 E
580 0.806575304513802 E
581 0.897258393118338 E
582 0.342393324256838 D
583 0.781245511773227 E
I
2002 Feb 26
3
a trick ??
Dear R users,
Suppose i have an A square matrix rxr. I want to obtain a block matrix
B (pxr,pxr) where
the p diagonal blocks are A and the others values are 0.
I would like to do something like : diag(A,ncol=pr, nrow=pr)
How can i do it ??
Thanks in advance,
Olivier.
--
-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-
Olivier MARTIN
PhD student phone: (33) 04
2002 May 07
4
Putting obejct into Graph title
Hello all -
If I want to put mean value of a matrix into the title or subtitle of a graph, how would I do this? For example, in a set of commands like below,
> m.mean<-mean(m)
> gplot (m, thresh=m.mean)
> title (main="A2. Block Density of Matrix m\nplotted based on MDS",
+ sub="lines below mean density (**0.435**) suppressed")
I want to ask [R] to put the
2000 Oct 13
2
syntax confusion with function/non-function objects (PR#694)
I'm just back from a computer practical where we ran into
> "f" <- function(x) 2(x^2) # for 2 * x^2
This definition was taken as legitimate, although using the
function generated the error message
> f(3)
Error in f(3) : attempt to apply non-function
Am I right in thinking that in prevous versions of R this
definition would have been declared as a syntax error? Surely a
2000 Apr 06
2
Strange behaviour of image (PR#510)
The following commands
z <- matrix(seq(0, 1, len=1000))
image(z, 1, z, zlim=c(0, 1), col=gray(1:10/10))
appear to violate the image functionality as described on the
help page. As I understand it, by specifying a zlim of c(0, 1)
and a colour vector of length 10, the colours should correspond
to the intervals (0, 0.1), (0.1, 0.2), ..., (0.9, 1.0), this
being 10 equally-spaced intervals on (0,
2000 May 03
2
print() "bug" for arrays with 0 columns
The "bug" is that it doesn't print anything;
one might argue that this is not a bug, since such an array *is* empty,
but I don't buy that argument.
It *does* print if #{columns} (= last dimension) > 0 :
> array(NA,dim=c(2,0))
> array(NA,dim=c(2,1,0))
> array(NA,dim=c(0,2))
[,1] [,2]
> array(NA,dim=c(0,2,1))
, , 1
[,1] [,2]
>
2000 Jul 13
2
Programming puzzle...
Dear R guru's,
I'd like to sort the columns of a matrix according to the elements in the
first row, and in case of a tie according to the second row, etc.
In case of a 3xn matrix woppa, something like
colorder _ order(woppa[1,], woppa[2,], woppa[3,])
I just cannot seem to find a way to do this for a variable number of rows,
e.g. if woppa has 10 or 15 rows I now manually cut and paste to
2000 Nov 21
3
boxplot grouped by two variables.
Is there a quick way to make boxplots groups by two variables? By that
I mean, that if x axes have values ("A","B","C"), than at each value
there would be a few boxplots each for a value of second variable (say
("1","2","3")).
Thank You.
--
Vadim Kutsyy
http://www.kutsyy.com vadim at kutsyy.com
The University of
2000 Nov 21
3
boxplot grouped by two variables.
Is there a quick way to make boxplots groups by two variables? By that
I mean, that if x axes have values ("A","B","C"), than at each value
there would be a few boxplots each for a value of second variable (say
("1","2","3")).
Thank You.
--
Vadim Kutsyy
http://www.kutsyy.com vadim at kutsyy.com
The University of
2000 Nov 30
3
g-inverse
Is there any routine to obtain a g-inverse
of a matrix in R or S-PLUS?
Tapio Nummi
University of Tampere
Finland
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