Displaying 20 results from an estimated 1000 matches similar to: "problems creating data frames"
2011 Jun 16
1
lines(..., lwd=3) inaccuracy
Using a line width > 1 results in not only a thicker line but also some fuzz
in the other direction, as shown in this example program. You will see that
the thick vertical black lines extend below the gray scale horizontal lines.
Does anyone know whether this is intended or is it a bug? The application
is for displaying a correlation matrix (here just some random U(0,1)s).
Thanks -Frank
2019 Aug 08
3
How to best deal with undesirable Induction Variable Simplification?
Hello,
Recently I've come across two instances where Induction Variable Simplification lead to noticable performance regressions.
In one case, the removal of extra IV lead to the inability to reschedule instructions in a tight loop to reduce stalls. In that case, there were enough registers to spare, so using extra register for extra induction variable was preferable since it reduced
2017 May 28
2
Pseudo-instruction that overwrites its input register
Hi,
I'd like to define a pseudo-instruction whose expansion will, as a
side-effect, overwrite an input register's value: the pseudo-instruction
ldw r1:r2, P
to load 2 bytes from memory address P is to be expaneded to
ld r1, P+
ld r2, P
where "ld _, P+" is an instruction that loads a single byte from P, and
post-increments P by one.
How can I represent this behaviour in
2011 Mar 27
6
Asking Favor For the Script of Median Filter
Hello,everybody. My name is Chuan Zun Liang. I come from Malaysia. I am just
a beginner for R. Kindly to ask favor about median filter. The problem I
facing as below:
> x<-matrix(sample(1:30,25),5,5)
> x
[,1] [,2] [,3] [,4] [,5]
[1,] 7 8 30 29 13
[2,] 4 6 12 5 9
[3,] 25 3 22 14 24
[4,] 2 15 26 23 19
[5,] 28 18 10 11 20
This
2019 Aug 09
4
How to best deal with undesirable Induction Variable Simplification?
Hi Hal,
I see. So LSR could theoretically counteract undesirable Ind Var transformations but it's not implemented at the moment?
I think I've managed to come up with a small reproducer that can also exhibit similar problem on x86, here it is: https://godbolt.org/z/_wxzut
As you can see, when rewriteLoopExitValues is not disabled Clang generates worse code due to additional spills,
2002 Jul 30
4
chisq.test, basic question
The cells are interpreted as counts, so by scaling you're analyzing a
different experiment (one with fewer observations). So the chi-squared value
will change (the terms (O-E)^2/E in the statistic scale linearly ignoring
rounding and "Yates' continuity correction").
The chisq.test on the original data is a test of association. Conventionally
you decide ahead of time on a
2007 Apr 09
3
sem vs. LISREL: sem fails
I am new to R.
I just tried to recreate in R (using sem package and the identical input data) a solution for a simple measurment model I have found before in LISREL. LISREL had no problems and converged in just 3 iterations.
In sem, I got no solution, just the warning message:
"Could not compute QR decomposition of Hessian.
Optimization probably did not converge.
in: sem.default(ram =
2019 Aug 13
2
How to best deal with undesirable Induction Variable Simplification?
I've noticed that there was an attempt to mitigate ExitValues problem in https://reviews.llvm.org/D12494 that went nowhere. Were there particular issues with that approach?
--
Danila
From: Philip Reames [mailto:listmail at philipreames.com]
Sent: Saturday, August 10, 2019 02:05
To: Danila Malyutin <Danila.Malyutin at synopsys.com>; Finkel, Hal J. <hfinkel at anl.gov>
Cc: llvm-dev
2006 Nov 23
2
random effect question and glm
consider p as random effect with 5 levels, what is difference between these
two models?
> p5.random.p <- lmer(Y
~p+(1|p),data=p5,family=binomial,control=list(usePQL=FALSE,msV=1))
> p5.random.p1 <- lmer(Y
~1+(1|p),data=p5,family=binomial,control=list(usePQL=FALSE,msV=1))
in addtion, I try these two models, it seems they are same.
what is the difference between these two model. Is
2007 Apr 11
1
creating a path diagram in sem
Hello,
I finally run my measurement model in sem - successfully. Now, I am trying to print out the path diagram that is based on the results - but for some reason it's not working. Below is my script - but the problem is probably in my very last line:
# ANALYSIS OF ANXIETY, DEPRESSION, AND FEAR - LISREL P.31
library(sem)
# Creating the ANXIETY, DEPRESSION, AND FEAR intercorrelation matrix
2007 May 30
2
control axis
I have an outlier that I would still like to display, but would prefer to
shorten the axis. For example, display 0% - 40%, and 90% - 100%. Is this
possible? I am using an xyplot.
Thanks
Murray
--
Murray Pung
Statistician, Datapharm Australia Pty Ltd
0404 273 283
[[alternative HTML version deleted]]
2009 Jan 20
1
generalizing expand.table: table -> data.frame
In
http://tolstoy.newcastle.edu.au/R/e2/help/06/10/3064.html
a method was given for converting a frequency table to an expanded data
frame representing each
observation as a set of factors. A slightly modified version was later
included in the NCStats package,
only on http://rforge.net/ (and it has too many dependencies to be useful).
I've tried to make it more general, allowing an input
2019 Aug 16
2
How to best deal with undesirable Induction Variable Simplification?
Thanks. I've rebased this patch on top of the recent LLVM (it was straightforward) and applied it in my fork.
It seems to have solved one of the problems I was having. Would LLVM be interested if I submit the updated version for the review?
--
Danila
From: Philip Reames [mailto:listmail at philipreames.com]
Sent: Tuesday, August 13, 2019 19:01
To: Danila Malyutin <Danila.Malyutin at
2008 Sep 22
2
adding layers in ggplot2 (data and code included)
Here is some sample data:
mydata <- read.table(textConnection("Est Group Tri
0 0 4.639644
1 0 4.579189
2 0 4.590714
0 1 4.443696
1 1 4.588243
2 1 4.650505
0 2 4.296608
1 2 4.826036
2 2 4.765386"),header=TRUE);
closeAllConnections();
I can form two plots,
2006 Aug 15
4
SSL encryption with icecast2
Hi there,
is it possible to use such encryption like SSL/TLS for authenticating
users on a mountpoint? I can't find somethin like that in the
docmentation and it would be nice to have such a mechanism like that,
because all passwords will be transmitted in PLAIN text. This is not
very secure, because anyone can see the usernames and passwords in his
sniffer program.
Would be pleased if
2012 Sep 19
2
ggplot formato dígitos en ggplot2
Hola de nuevo.
Resulta que al actualizar a la versión 0.9.2 de ggplot2 , ahora en mi
eje continuo y , los valores se etiquetan en formato científico , cuando
antes era normal. Es decir, mis valores máximos están sobre 300000, pero
en el eje ahora pone 3e+05 y no he encontrado como cambiarlo.
He visto que se puede cambiar utilizando el paquete scales y utilizando
por ejemplo , siendo p un
2013 Sep 13
1
Creating dummy vars with contrasts - why does the returned identity matrix contain all levels (and not n-1 levels) ?
Hello,
I have a problem with creating an identity matrix for glmnet by using the
contrasts function.
I have a factor with 4 levels.
When I create dummy variables I think there should be n-1 variables (in this
case 3) - so that the contrasts would be against the baseline level.
This is also what is written in the help file for 'contrasts'.
The problem is that the function
2009 Sep 08
2
Very basic question regarding plot.Design...
Hello ALL!
I have a problem to plot factor (lets say gender) as a line, or at least
both line and point, from ols model:
ols1 <- ols(Y ~ gender, data=dat, x=T, y=T)
plot(ols1, gender=NA, xlab="gender", ylab="Y",
ylim=c(5,30), conf.int=FALSE)
If I convert gender into discrete numeric predictor, and use
forceLines=TRUE, plot is not nice and true, since it shows values
2008 Dec 23
2
Bash Script for Beginners! oh dear :'(
Hey guys,
I'm a bit of a beginner (understatement!) with shell scripting and
seek help! I am setting up our new squid proxy. Its working a treat
and squidGuard is the icing on the cake. But, I am trying to write a
shell script to search through our black list category's for
squidGuard and remove the parsed value;
Scenario:
/some/directory/where/blacklist/is/stored contains about 40-50
2007 Jun 24
2
problem gsub in the locale of CP932 and SJIS (PR#9751)
Full_Name: Ei-ji Nakama
Version: R-2.5.0
OS: any
Submission from: (NULL) (219.117.236.5)
problem by operation of gsub in the locale of CP932 and SJIS.
The inconvenient character code which used 0x5c after the first byte.
--- R-2.5.0.orig/src/main/character.c 2007-04-03 11:05:05.000000000 +0900
+++ R-2.5.0/src/main/character.c 2007-06-24 22:31:06.000000000 +0900
@@ -986,6 +986,17 @@