Displaying 20 results from an estimated 2000 matches similar to: "Any MD5 digests for source files?"
2007 Apr 18
1
[Bridge] Problem loading bridge.o
Hello, I want to add wireless capability to my Gentoo-linux based
firewall/router at home, so I bought a Netgear MA311 PCI and installed
the hostap package. I load the hostap_pci module and the wlan0 interface
comes up fine. I can detect the signal from a wireless enabled laptop.
Now I'm thinking I'm going to bridge the wlan0 interface and the eth1
interface, and run the firewall with br0
2002 Aug 02
3
I know this is wrong, but why?
My mind has become corrupted by having to use SAS too much. I wanted to
calculate the difference of elements of two vectors if the signs are the
same. I tried it the corrupted way first:
if (effects1[,3] < 0 & effects0[,3] < 0) {
imprv1 <- effects0[,3] - effects1[,3]
} else if (effects1[,3] > 0 & effects0[,3] > 0) {
imprv1 <- effects1[,3] - effects0[,3]
} else {
2002 Sep 05
1
Trouble installing packages in Gentoo Linux
I'm trying to install packages in Gentoo Linux using install.packages().
The packages download fine, but when it comes to installation, I get
this message:
WARNING: ignoring environment value of R_HOME
/var/tmp/portage/R-1.5.1/image//usr/lib/R/bin/Rcmd:
/var/tmp/portage/R-1.5.1/image//usr/lib/R/bin/Rcmd: No such file or
directory
I have the R_HOME set to the correct value (/usr/lib/R), but I
2002 May 19
3
How to shade part of a density plot
I'm trying to shade part of a density plot. The code I'm trying (using
the Old Faithful data as an example) is something like this:
# The Old Faithful geyser data
data(faithful)
d <- density(faithful$eruptions, bw = "sj")
plot(d)
polygon(d[d$x>4], col = "wheat")
I expected that the part of the curve to the right of 4 on the x axis
should be shaded, but nothing
2002 May 06
1
Did something big change in 1.5?
I can't remember the programming term -- ``implicit declaration''? Has
this changed between 1.4.1 and 1.5? This code used to run as is:
for (i in 1:length(diff.time)) {
if (diff.time[i] < 16) {
total.time[i] <- ifelse(i==1, 7.5, total.time[i-1]) + diff.time[i]
last.time[i] <- 0
}
else {
total.time[i] <- 7.5
last.time[i-1] <- 1
}
}
Now in 1.5 I
2004 Oct 11
3
split and rlm
Hello, I'm trying to do a little rlm of some data that looks like this:
UNIT COHORT perdo adjodds
1010 96 0.39890 1.06894
1010 97 0.48113 1.57500
1010 98 0.36328 1.21498
1010 99 0.44391 1.38608
It works fine like this: rlm(perdo ~ COHORT, psi=psisquare)
But the problem is that I have about 100 UNITs, and I want to do a
2002 Apr 26
0
[OT] Inverting sparse matrices
Sorry for the way off-topic post, but this list has the highest
concentration of statistical computing gurus anywhere.
I'm looking for a C routine for efficiently inverting large, sparse
matrices (at least 6000 x 6000 and potentially as large as 20,000 x
20,000 with perhaps 80% of the off-diagonal elements empty).
I looked in
http://gams.nist.gov/serve.cgi/Class/D2a4/
but I have no way of
2001 Feb 01
3
Rotated mtext
I seem to remember this coming up before, but I can't find it any messages I've
saved or in the archives (searching by subject). I want to rotate mtext so that
it's perpendicular to the right side. I tried srt=90 and lots of other values,
but it seems to be ignored. Is there a way to do this?
______________________________________________________________________
Stuart Luppescu
2000 Mar 27
1
Behavior different inside function?
I'm stumped with this. When I execute the lines in the function singly, they
run fine, but when I run the function, I get this error on the read.table()
line:
Error in count.fields(file, sep, quote, skip) :
can't open file fspci1.dat
Can anyone tell my why this should be so? Here is the program:
library(rpart)
wait <- function(str="Press a key when ready...")
2000 Mar 28
1
loess.smooth dumps core
Has the loess.smooth() function changed? It used to work, but now it causes R
to abort with a segmentation fault. I stole the function points.lines() from
V&R 1st ed. pp. 67--68, but now it only works if I remove the line with
loess.smooth. Here's the function I'm using:
points.lines <- function(x, y, ...)
{
cor1 <-round(cor(x, y, use="pairwise"), digits=2)
2000 Aug 04
2
pattern on bars?
Colors are real nice, but the publication I'm preparing these barplots for
permits only black and white. The Splus plot options ``dbangle'' (or plain
``angle'') and ``density'' (as on p. 65 of MASS 1st ed.) don't seem to be
available in R. Is there another way to do this?
I'm running R 1.1.0 on Linux (intel). Thanks.
1999 Sep 17
1
Tukey's biweight
I want to estimate the center of a distribution with lots of outliers in one
tail, and thought I would use a function such as S-plus's location.m() with
psi.fun=bisquare (as per MASS 3 p. 131). However, R seems not have such a
function, so my questions are:
1) Is there an R equivalent to location.m()?
2) Would huber() give me results that are similar (i.e., close enough)?
Thanks.
2000 Dec 08
1
ylim doesn't work in boxplots?
I want to leave a little extra room at the bottom for a legend in a box plot,
but I find that the boxplot function ignores ylim. Is there any way around
this? Thanks.
______________________________________________________________________
Stuart Luppescu -=-=- University of Chicago
$(B:MJ8$HCRF`H~$NIc(B -=-=- s-luppescu at uchicago.edu
2001 Jan 05
1
Trends for many units
I have data on every grade in all elementary schools in Chicago over 5 years. I
would like to estimate a trend over time for each grade in each school. There
are 17,600 data all together (about 460 schools, nearly 8 grades each, over 5
years). Is there a not-so-hard way to do this in R (I was thinking of using
rlm)?
______________________________________________________________________
Stuart
2001 Feb 05
1
Bar widths in barplots don't change
Is the width= parameter in barplot() supposed to work? I couldn't get it to
work in my plot, and even in the example,
data(VADeaths, package = "base")
barplot(VADeaths, width=rep(0.1, 4))
the plot looks identical regardless of what I put in for the width. I looked at
the source for barplot() and it looks like it SHOULD work (but what do I know).
Am I doing something wrong?
2001 Mar 05
1
Model selection with BIC
Is there an efficient way to do linear model selection by choosing the model
with the highest BIC from all possible models?
______________________________________________________________________
Stuart Luppescu -=-=- University of Chicago
$(B:MJ8$HCRF`H~$NIc(B -=-=- s-luppescu at uchicago.edu
http://www.consortium-chicago.org/people/sl.html
http://musuko.uchicago.edu/pubkey.asc
2001 May 24
1
Labels perpendicular to axis
I would like to make my horizontal barplot vertical axis labels perpendicular to
the axis. I tried las=1, srt=90; I even tried yaxt='n' thinking I'd put the
labels in using mtext, but the axis continued to be drawn. Can anyone help me
with this? My barplot() statement looks like this:
barplot(height=foo$rebint[o1], names=foo$Unit[o1], horiz=TRUE,
col=mycolors[foo$type[o1]],
2001 Oct 05
2
Reading in data in a triangle
I have plain-text data in lower triangular form that I want to read in. Does
anyone know of an easy way to do this?
______________________________________________________________________
Stuart Luppescu -=-=- University of Chicago
$(B:MJ8$HCRF`H~$NIc(B -=-=- s-luppescu at uchicago.edu
http://www.consortium-chicago.org/people/sl.html
http://musuko.uchicago.edu/pubkey.asc for PGP
2001 May 10
2
Scanning data lines with blanks in character vars
Hello, I'm trying to read data in from a file using scan(). The last field is a
character string that contains blanks. I had read it in in S-Plus using this
code:
ifile <- list(entry=0,measure=0,st=0,count=0,score=0,
error=0,inmsq=0,instd=0,outms=0,outstd=0,displc=0,ptbis=0,a=0,
r="",name="")
if.widths <- c(1, 5, 8, 3, 6, 7, 7, 7, 7, 7, 7, 7, 7, 2,
2000 Jul 07
2
Question of programming style
This is really a question of how to program this *BETTER*. It works as I have
done it, but is quite ugly.
I want to do a 3d scatterplot of the upper triangle of a matrix, where the
z-values are the values in the matrix, and the row and column indices are the y-
and x-values. The complete (11 by 11) matrix is mmtop94.2. Here is my awkward
code:
mmtop94.2[lower.tri(mmtop94.2)] <- NA
# Here i