Displaying 20 results from an estimated 3000 matches similar to: "Bug/Error in formatC? (Was: Why doesn't formatC( x, digits=2, format= "g")...)"
2008 Jun 06
2
Why doesn't formatC( x, digits=2, format="g") doesn't always give 2 sig figs?
Hi all
I am not a C programmer, but I am trying to understand formatC to
get consistent printing of reals to a given number of significant
digits.
Can someone please explain this to me? These first three give what
I expect on reading ?formatC:
> formatC(0.0059999, digits=2,format="fg",flag="#")
[1] "0.0060"
> formatC(0.59999,
2008 Feb 27
2
Adding LaTeX cross-references into Sweave plots
Hi all
I'm using Sweave and LaTeX, and love how they interact.
But here's a different interaction I'm not sure how to achieve; I
hope someone can help. I use a simple example, of course, to
demonstrate.
Suppose in my LaTeX document I have this:
Here is a linear equation:
\begin{equation}
y = -1 + 3 x
\label{EQ:example}
\end{equation}
This appears in the final product
2007 Mar 07
1
Sweave issue: quotes in verbatim-like output print incorrectly
Hi all
I love Sweave; use it all the time.
But I recently received a new computer, and ever since I
have had a problem I've never seen before.
For example, I place the following in my Snw file:
<<>>=
sms <-
read.table("http://www.sci.usq.edu.au/staff/dunn/Datasets/applications/popular/smsspeed.dat",
header=TRUE)
attach(sms)
sms.lm <- lm( Time ~ Age*Phone,
2007 Dec 14
1
Help! - boxcox transformations
Hi,
Hope this does not sound too ignorant .
I am trying to detrend and transform variables to achieve normality and
stationarity (for time series use, namely spectral analysis). I am using the
boxcox transformations.
As my dataset contains zeros, I found I need to add a constant to it in
order to run "boxcox". I have ran tests adding several types of constants,
from .0001
2007 Dec 17
1
Identity link in tweedie
Hi there,
I'm using the tweedie distribution package and I cant figure out how to
run a model using an identity link. I know I can use a log link by
having link.power=0 and I think identity would be link.power=1, but I'm
not sure. Furthermore when I try running it with link.power=1 it
requires starting values which I cant manage to give appropriately so
I'm not sure if its
2003 Mar 19
3
The best way to end up with WMF files
Hi all
I am doing some stats work for a group of biologists
who require windows metafiles (*.wmf) for their publications.
To create these, I appear to have two choices:
1. Restart my machine in Windows and use savePlot
2. Keep my machine in linux, save as another format,
then convert.
I'd rather stay in linux; but how do I get wmf files? I looked
at using ImageMagick's convert,
2003 Jul 29
1
Sweave: pass scale parameter to includegraphics?
Hi all
I'm using Sweave and find it a treat. But one
question:
I use Sweave to create my pictures which are
automatically included into LaTeX. For example,
in the file test.Snw, I may have:
% LaTeX stuff
\begin{figure}
<<fig=true,width=5,height=5>>=
x1 <- seq(1,5, length=10)
x2 <- sin(x1)
plot(x1,x2)
@
\caption{Plot}
\end{figure}
% More LaTeX
This produces the LaTeX
2007 Jun 15
2
sma package, and MouseArray data set
Hi all
I have just downloaded the sma package from CRAN.
On installing on my linux machine, I get the message
> library(sma)
> data(MouseArray)
Warning message:
file 'MouseArray.RData' has magic number 'RDX1'
Use of save versions prior to 2 is deprecated
Hereafter, MouseArray is not found:
> MouseArray
Error: object "MouseArray" not found
We were
2002 Dec 16
1
Creating libraries: Cannot make help
Hi all
I am trying to package a library in R 1.6.1 (Windoze XP).
I have read the document "Writing R extensions" and think I
have done things correctly (though apparently not). I have
searched the mail archives for help to no avail.
I also posted a few days ago and thanks to Peter Dalgaard I have
managed to focus my search for errors.
I am trying to create a library in R. I run the
2007 May 03
2
Building package: What does this message about rcompgen imply?
Hi all
I'm updating a package for submission to CRAN, and I am getting
an error message I never have seen before, and can't find out
what it implies or means (and hence, what I need to do to fix
it).
After running R CMD check, I get this:
<snip>
* checking foreign function calls ... OK
* checking R code for possible problems ... OK
* checking Rd files ... OK
* checking Rd
2007 Nov 08
1
Mixing lty specifications in legend
Hi all
I have a plot with lines, one specified as (say) lty=1,
using standard line types, and another as (say) my
own spec: lty="51".
I can't get legend to display both. Toy example:
> plot(1~1)
> legend("topright", lty=c("51",1), legend=c("My own","Standard"))
Error in segments(x1, y1, x2, y2, ...) : invalid line type: must be
2019 May 30
1
Possible bug in formatC
I do not know if this is a bug or a case of improper documentation. The
documentation for formatC() implies that the difference between the options
format="f" and format="g" is that with "g", scientific format is sometimes
used. There is another difference between them that is not mentioned in the
documentation. drop0trailing=FALSE is ignored when format is set to
2005 Aug 12
1
Help converting a function from S-Plus to R: family$weight
Hi all
I am converting an S-Plus function into R. The S-Plus code
uses some of the glm families, and family objects.
The family objects in S-Plus and R have many different
features, for example:
In R:
> names(Gamma())
[1] "family" "link" "linkfun" "linkinv" "variance"
[6] "dev.resids" "aic"
2004 Jun 22
1
Using xtable with summaries of lm objects
Hi all
Suppose I do the following:
set.seed(1000)
library(xtable)
x <- runif( 10 )
y <- 1 + 2*x + rnorm( length(x) )
test.lm <- lm( y ~ x )
summary( test.lm )
xtable ( summary( test.lm ) )
The final xtable output follows:
% latex table generated in R 1.8.1 by xtable 1.2-2 package
% Tue Jun 22 09:56:36 2004
\begin{table}[ht]
\begin{center}
\begin{tabular}{rrrrr}
\hline
&
2007 Jun 28
4
Sweave bug? when writing figures / deleting variable in chunk
I have found a quite strange (to me) behaviour in Sweave. It only
occurs in the following situation:
1. define a variable in one chunk
2. use it within a subsequent figure-generating chunk
3. delete it at the end of that same chunk
Then the Sweave driver chokes, not finding the variable name when
generating the figure
Example:
% document bug2.Rnw
\documentclass{article}
\usepackage{Sweave}
2002 Dec 13
1
Loading libraries: Nas introduced
Hi all,
I am trying to package a library in R 1.6.1 (Windoze XP).
I have read the document "Writing R extensions" and think I
have done things correctly (though apparently not). I have
searched the mail archives for help to no avail.
When I try to attach the library using, eg
> library( libname, lib.loc=path.to.library)
I get this message:
Warning message:
NAs introduced by
2007 Sep 13
1
Problem using xtable on an array
Hi all
I know about producing a minimal example to show my problem. But I'm
having trouble producing a minimal example that displays this
behaviour, so please bear with me to begin with.
Observe: I create an array called model.mat. Some details on this:
> str(model.mat)
num [1:18, 1:4] -0.170 -0.304 -2.617 2.025 -1.610 ...
- attr(*, "dimnames")=List of 2
..$ : chr
2002 Nov 19
5
plotting intersecting planes
Hi all
In two days, I am giving a small, informal workshop in our
Department about using R. Initially, it was just for statistician,
but surprisingly (to me anyhow) many mathematicians are also
coming who have a MATLAB background. They are coming at the
Workshop from a teaching perspective.
They are considering using R to avoid licensing issues with
MATLAB. One thing they were hoping me to
2005 Oct 06
2
R/S-Plus equivalent to Genstat "predict": predictions over "averages" of covariates
Hi all
I'm doing some things with a colleague comparing different
sorts of models. My colleague has fitted a number of glms in
Genstat (which I have never used), while the glm I have
been using is only available for R.
He has a spreadsheet of fitted means from each of his models
obtained from using the Genstat "predict" function. For
example, suppose we fit the model of the type
2001 Oct 26
1
Bug or new concept in formatC?
As a sequel to my previous mail on cut, formatC does not produce
what I have been taught is significant digits:
> x <- c(1.0793,1.0796, 11.0954, 11.0736 )
> formatC(x,digits=3,format="g")
[1] "1.08" "1.08" "11.1" "11.1"
(3,3,3,3) significant digits OK
> formatC(x,digits=3,format="f")
[1] "1.079"