Displaying 20 results from an estimated 3000 matches similar to: "non-zero sequence of numbers"
2005 Oct 06
1
circular statistics plotting
Hi all,
I'm new to the list here, and I have what I think is a simple
question. Using the "circular" package, is there a way to plot the
mean and variance on top of a rose diagram or other plot of the data?
Thanks in advance...
- Jason
Jason Horn
Boston University Department of Biology
5 Cumington Street Boston, MA 02215
jhorn@bu.edu
office: 617 353 6987
cell: 401 588
2005 Oct 10
2
R.app window size
Hi all,
This is a question for any of you who use R.app (OS X). Is there any
way to resize the quartz plot window from within R? I know that you
can resize the window by dragging the corner of the window, and fro
the preferences panel. But is there a way to specify the window size
from the console? I want to specify the size of the plot window from
inside an R function.
Also a
2006 Feb 20
1
RMySQL Error Messages, crashing R
I am having trouble getting RMySQL working with R. It did at one
point, work with an older 1.x version of R, but now with R2.2.1, I am
getting the following messages on my OS X 10.4.5 system:
RS-DBI driver warning: (MySQL mismatch between compiled version
4.0.24 and runtime version 4.1.14)
if I then try to run any further db commands such as dbConnect, R
crashes with a bus error. When
2007 Sep 17
2
How to produce a macron symbol (overline / overbar) on a plot
Can anyone tell me how to produce a macron (or overbar or overline)
symbol on an R plot. I have an axis that is labeled "temp", but I
need the overbar symbol over the entire word.
Thanks,
Dr. Jason W. Horn
Research Associate
Boston University Department of Biology
5 Cumington Street Boston, MA 02215
jhorn@bu.edu
office: 617 353 6987
cell: 401 588 2766
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2006 Mar 07
4
POSIX time zone codes
The manual entry for as.POSIX says this about time zone codes...
Usage
as.POSIXct(x, tz = "")
tz
A timezone specification to be used for the conversion...
but it fails to mention what these "specifications" are. So far, I
have tried...
as.POSIX(x, tz="UTC") ... works, gives UTC times
as.POSIX(x, tz="UTC") ... works, gives EST times
as.POSIX(x,
2007 Feb 08
5
remove component from list or data frame
Sorry to ask such a simple question, but I can't find the answer after
extensive searching the docs and the web.
How do you remove a component from a list? For example say you have:
lst<-c(5,6,7,8,9)
How do you remove, for example, the third component in the list?
lst[[3]]]<-NULL generates an error: "Error: more elements supplied
than there are to replace"
Also,
2007 Feb 09
2
Replace individual values in a data frame with NA
I'd like to replace a value in a data frame with an NA, but can't
figure out how.
For example, say you have
a<-c(1,2,3,4)
b<-c(5,6,7,8)
data<-data.frame(a,b)
Now, how would you set the third row of the second column ( data
[[3,2]] ) to NA?
I have tried all types of permutations with is.na, including is.na<-
data[[3,2]], which does not work.
Thanks
2008 Feb 29
1
Column sums from a data frame (without the column headers)
Does anyone know how to get a vector of column sum from a data frame?
You can use colSums(), but this gives you a object of type "numeric"
with the column labels in the first row, and the sums in the second
row. I just want a vector of the sums, and I can't figure out a way
to index the "numeric" object.
Thanks!
2006 Mar 06
1
Length of a vector of POSIX objects reported incorrectly?
I have a vector of POSIX times/dates (called "times") that I want to
plot. But I'm having trouble because R reports the length of the
vector incorrectly. Can someone help me figure out what's going on
here?
This code....
print(times)
print(class(times))
print(length(times))
Produces this...
.
.
.
[355] "2006-03-06 18:34:00" "2006-03-06 18:32:00"
2006 Mar 07
1
How to change time zones?
Say you have a POSIX object that is in UTC. How do you change the
values to another timezone?
If I do this:
times <- strptime(times, "%H:%M:%S")
times1 <- as.POSIXct(times, tz="UTC")
times2 <- as.POSIXct(times, tz="CDT6CST")
times1 id UTC, but times2 is still UTC, not CTD. Why? Is the only
was to change time zones to add seconds to POSIX objects?
2006 Oct 18
1
Select one row of a data frame
Can anyone tell me how to select just one row of a data frame? Say I
want just the third row, what would be the syntax? Every notation I
try just gives me columns.
Thanks
- Jason
2002 Oct 29
1
pretty not pretty
Hi,
I have a following vector:
> smallch
[1] 0.0652840 0.1181300 0.0319370 0.0155700 0.0464110 0.0107850
[7] 0.0158970 0.0375900 0.0603090 0.0310300 0.0105920 0.0540580
[13] -0.0177740 0.0039393
Pretty (R 1.5.1) has problems with zero:
> pretty(smallch)
[1] -2.000000e-02 -3.469447e-18 2.000000e-02 4.000000e-02 6.000000e-02
[6] 8.000000e-02 1.000000e-01 1.200000e-01
2002 Oct 29
1
pretty not pretty
Hi,
I have a following vector:
> smallch
[1] 0.0652840 0.1181300 0.0319370 0.0155700 0.0464110 0.0107850
[7] 0.0158970 0.0375900 0.0603090 0.0310300 0.0105920 0.0540580
[13] -0.0177740 0.0039393
Pretty (R 1.5.1) has problems with zero:
> pretty(smallch)
[1] -2.000000e-02 -3.469447e-18 2.000000e-02 4.000000e-02 6.000000e-02
[6] 8.000000e-02 1.000000e-01 1.200000e-01
2000 Jun 13
2
Openssh-2.1.1p1 and solaris 7/8
Hello,
I just installed the above openssh onto a Sun Solaris 7 and Solaris 8 system.
No problem with that. However, I now seem to get some rubbish processed when
I login with slogin. An example:
Last login: Tue Jun 13 12:31:27 2000 from jhorne.csd.plymo:tJ`
^[[?1;2c
Telnet logs in okay, but just shows 'Last login...jhorne.csd.plymo'.
This seems to get passed to the shell, which it of
2003 May 08
3
Avoiding loops to spare time and memory
Is it possible to avoid the loop in the following function (or make the
function otherwise more efficient) and can someone point me to a
possible solution? (It would be great if hours could be reduced to
seconds :-).
# ---------------------------------------------
RanEigen=function(items=x,cases=y,sample=z)
{
X=matrix(rnorm(cases*items),nrow=cases,byrow=F)
S=crossprod(X-rep(1,cases) %*%
2006 Mar 08
0
survival
Dear R-helpers,
We marked 6000 leaves from 5 SPECIES - 10 individuals/species - in two
different TREATMENTs: a control and a dry-plot from which 50% of
incoming precipitation was excluded. We followed those leaves for 42
months and noted the presence and absence at each visit. I then carried
out a Cox Harzard model to see differences in leaf mortality between
parcels and among species over time:
2000 Nov 15
1
[PATCH]: nchan.c : internal error: we do not read, but chan_read
Attached is the patch I've been using to fix the error message seen in the
subject line. It seems (!) to have caused no problems with the
previous openssh snapshot version openssh-SNAP-20001016, 2.3.0p1 and the
latest snapshot (openssh-SNAP-20001114).
The patch adds 3 lines to nchan.c in a switch stmt (line 100). It simply
caters for the cases where the input channel state is
2020 Nov 17
3
can't delete recursive DNS entry
On 17/11/2020 16:19, Mani Wieser via samba wrote:
> ldbdel is definitely not the right tool: it will delete both records
>
> lddsearch: returned 2 records, because the dn is exactly the same
Didn't think you could have two records with the same DN, if this is
true, then it does sound like a bug, care to share the two DN's ?
Rowland
2001 Oct 22
3
round() doesnt (PR#1138)
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2006 Jan 06
2
sudoku
Any doubts about R's big-league status should be put to rest, now that
we have a
Sudoku Puzzle Solver. Take that, SAS! See package "sudoku" on CRAN.
The package could really use a puzzle generator -- contributors are
welcome!
-- David Brahm (brahm at alum.mit.edu)
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