Strings are not glamorous, high-profile components of R, but they do
play a big role in many data cleaning and preparations tasks. R
provides a solid set of string operations, but because they have grown
organically over time, they can be inconsistent and a little hard to
learn. Additionally, they
Dear Anne,
I started to diagram your model but stopped when I noticed some problems:
(1) Some variables, such as pays_alti, are clearly endogenous, since they
have arrows pointing to them, yet are declared as fixed exogenous variables;
that clearly doesn't make sense. (2) You've placed
Put the line:
cat(z1,'\n')
in your function. You may also want to put the flush.console() command right
after that.
Hope this helps,
--
Gregory (Greg) L. Snow Ph.D.
Statistical Data Center
Intermountain Healthcare
greg.s...@imail.org
801.408.8111
-Original Message-
From:
Using the barplot function in base graphics you just set space=0, but that
function does not have a box.ratio argument which would imply that you are
using something else. If you let us know which function (and which package it
is in) then it is easier (possible) for us to help you, even
You mean 'TRUE': 'T' is a variable in R, with initial value TRUE.
On Wed, 25 Aug 2010, Sally Luo wrote:
Hi R users,
I am trying to use the optim function to maximize a likelihood funciton, and
I got the following warning messages.
Could anyone explain to me what messege 31 means exactly? Is
The plots did not come through, see the posting guide for which attachments are
allowed. It will be easier for us to help if you can send reproducible code
(we can copy and paste to run, then examine, edit, etc.). Try finding a subset
of your data for which the problem still occurs, then send
.. thanks again, richard.
and you swiftly saw the next problem comming up - when using par.settings =
list(layout.widths = list(axis.panel = c(1, 0))) getting rid of the double
tick labeling would be natural -
but i'll leave it at that for today.
many thanks,
kay
Richard M. Heiberger wrote:
On 08/25/2010 05:17 PM, francogrex wrote:
Hi I'm having different outputs from GLM when using a condensed table
V1V2 V3 Present Absent
0 0 0 3 12
0 0 1 0 0
0 1 0 0 0
0 1 1 1 0
1 0
Ben,
1a. am I right in believing that odfWeave does not respect the
'keep.source' option? Am I missing something obvious?
I believe it does, since this gets passed directly to Sweave.
1b. is there a way to set global options analogous to \SweaveOpts{}
directives in Sweave? (I looked at
Marino Taussig De Bodonia, Agnese agnese.marino09 at imperial.ac.uk writes:
I am using the package MuMI to run all the possible combinations
of variables in my full model, and select
my best models. When I enter my variables in the original model I
write them like this
lm(y~ a +b +c
Howdy,
On Wed, Aug 25, 2010 at 1:21 PM, Joris Meys jorism...@gmail.com wrote:
Hi Steve,
thanks for the tip. I'll definitely take a closer look at your
solution for implementation for future use. But right now I don't
have the time to start rewriting my class definitions.
Luckily, I found
Hi:
The function below plots the line segment between two points A and B as well
as the normal from C to AB, with a dot as the intersection point (D), which
is returned with the function call. The aspect ratio is kept at one so that
the orthogonality between the two lines is not distorted by the
Hi,
You did not give us any information about your likelihood function, f, nor
did you provide a reproducible example. So, I cannot tell for sure whether
the parameter estimates are reliable.
Ravi.
-Original Message-
From: r-help-boun...@r-project.org
Hi,
I am working on a problem of checking whether a point is behind two convex
hulls. By 'behind', I mean a point which is outside of two convex hulls
can't reach either of these two hulls without reaching the other.
My idea is to find the segments between the point and the vertices of a
the deteminant is a nonpositive value. log(det(...)) produce NaNs...
--
View this message in context:
http://r.789695.n4.nabble.com/What-does-this-warning-message-from-optim-function-mean-tp2338689p2338719.html
Sent from the R help mailing list archive at Nabble.com.
Hi,
With axTicks I did what I wanted. Thank you all for the attention.
Below is the code I did to have a plot with three y axes.
Suggestions to improve the routine are welcome.
All the best,
Antonio Olinto
Data in a spreadsheet
YEARL NFB NFT
200526,352158 1500
Hi:
On Wed, Aug 25, 2010 at 11:28 AM, Greg Snow greg.s...@imail.org wrote:
Using the barplot function in base graphics you just set space=0, but that
function does not have a box.ratio argument which would imply that you are
using something else. If you let us know which function (and which
Thank you all for your suggestions and especially the codes.
Now I am able to solve it by finding the intercepts and slopes for both
lines first, and then I can find the coordinates of x and y at the
intersection. At first I forgot how to use C to get the intercept of line
CD...
Thanks
Dear all,
I just received a file from a colleague in spss. The read.spss could not finish
the file due to an error (Unrecognized record type 7, subtype 18 encountered in
system file) so instead I converted the file using stat-transfer. Looking at my
data I see that most labels are in the
On Aug 24, 2010, at 10:20 PM, Jonathan Greenberg wrote:
Rhelpers:
I'm trying to make a barchart of a 2-group dataset
(barchart(x~y,data=data,groups=z,horizontal=FALSE)). My problem is
that I can't, for the life of me, seem to get rid of the inter-bar
space -- box.ratio set to 1 doesn't
[cc'ing back to r-help: this is good etiquette so that the responses
will be seen by others/
archived for future reference.]
On 10-08-25 04:35 PM, Marino Taussig De Bodonia, Agnese wrote:
Yes, I meant MuMIn
the global formula I introduced was:
rc4.mod-lm(central$hunting~ central$year +
Hi Adrian,
Your code for the secant method is correct.
I just tweaked it a bit w/o the calendar time feature (assuming that the
cash flows will be available on an annual basis) as follows:
ANXIRR - function (cashFlow, guess, tol=1.e-04){
npv - function (cashFlow, irr) {
n -
Another approach is to use `uniroot' to find the zero of the NPV function:
npv - function (cashFlow, irr) {
n - length(cashFlow)
sum(cashFlow / (1 + irr)^{0: (n-1)})
}
uniroot(f=npv, interval=c(0,1), cashFlow=cashFlow)
However, there may be situations where there are no
No, seriously: I've had more than one person at work wonder what math
toolset could be loaded onto iOS. So, before Matlab, FreeMat,
Mathematia, SciLab, Octave, or numpy (:-) ) produces a version for iPad,
any chance someone is working on R for iPad?
I believe that the iPad conditions for producing apps are incompatible with the
GPL (gnuGo was removed from the apps store recently for this reason), so don't
hold your breath.
There may be some possibility for an app on the iPad that would access R on a
server somewhere else, but that is
Instructions for installing R on jailbroken devices:
http://rwiki.sciviews.org/doku.php?id=getting-started:installation:iphone
Carl Witthoft wrote:
No, seriously: I've had more than one person at work wonder what math
toolset could be loaded onto iOS. So, before Matlab, FreeMat,
Hi,
On Wed, Aug 25, 2010 at 5:37 PM, Greg Snow greg.s...@imail.org wrote:
I believe that the iPad conditions for producing apps are incompatible with
the GPL (gnuGo was removed from the apps store recently for this reason), so
don't hold your breath.
There may be some possibility for an
Yes, the secant method (like Newton Raphson) is not guaranteed to converge,
unlike the bisection method, but it has a superlinear convergence (not that
this matters much!). Brent's method, which is used in `uniroot', is a
reliable and fast method, which is why I suggested it in my previous email.
On Aug 25, 2010, at 4:23 PM, Carl Witthoft wrote:
No, seriously: I've had more than one person at work wonder what math
toolset could be loaded onto iOS. So, before Matlab, FreeMat, Mathematia,
SciLab, Octave, or numpy (:-) ) produces a version for iPad, any chance
someone is working on
I have found an existing image on Amazon EC2 including R. But unfortunately,
it is 32-bit
R on 32-bit Linux.
Does anybody know if there exists an mage (R 64-bit on Linux 64-bit) on
Amazon EC2?
Or how can I install 64-bit R on my own Linux instance there?
Thanks.
--
View this message in
On 8/25/2010 2:23 PM, Carl Witthoft wrote:
No, seriously: I've had more than one person at work wonder what math
toolset could be loaded onto iOS. So, before Matlab, FreeMat,
Mathematia, SciLab, Octave, or numpy (:-) ) produces a version for iPad,
any chance someone is working on R for iPad?
You have a 64 bit Linux? If so...
Dowload the sources
make sure you have all of the dependencies
unpack tarball
cd to de-compressed directory
issue
./configure
make
sudo make install
or maybe use your distros packages managment tool.
Am I missing something?
On Wed, Aug 25, 2010 at 4:39
Hey,
Many thanks to all who responded! I'll pass along the links to my pals.
Personally I can't imagine doing R on a virtual keyboard in the first
place, but to each his own.
Carl
__
R-help@r-project.org mailing list
Thank you.
The answers provides the right direction and a code was written accordingly.
One more request, if the label of axis X wants to be drawn from 5 to 1 (left
to right)
rather than 1 to 5, is it fine to change axis (4, at = NULL) ?
If so, which value should be input ?
Thanks again.
Elaine
Yes, I appreciated your answers which well hit my questions. (esp the
perfect model parts).
About the plot part, one more question.
Is it possible to make the two plots (northern and southern richness)
sharing the same Y axis (latitude = 0, the equator) ?
In other words, southern richness would
The secant method converges just fine. Your problem might have occurred due
to improper conversion of dates to elapsed time. You want to calculate IRR
using year as the time unit, not days.
Here is the secant function (modified to account for irregular times) and
the results for your example:
Deepayan Sarkar has a function combineLimits() in the development
version of the latticeExtra package (i.e. the version on
r-forge.r-project.org) which will set common scales in each row or
column of your layout. It can also remove the internal axes.
# Felix
On 26 August 2010 04:43, Kay Cichini
To update on this. I ran the same command on a grid of computers with 32gb
ram, and it completed in 15 seconds, compared to the ~20 minutes on my
desktop.
Simply a ram issue as suspected by a few on the list here.
Thanks
--
View this message in context:
Hi Jim
Thanks so much for this. The updated staxlab function works perfectly!
Tim
-Original Message-
From: Jim Lemon [mailto:j...@bitwrit.com.au]
Sent: Wednesday, August 25, 2010 6:36 PM
To: tesutton
Cc: r-help@r-project.org
Subject: Re: [R] Rotate x-axis label on log scale
On
Hi there,
I have a question regarding the plot command after estimation.
Specifically, I estimate a model, say regressing y on x and z. And
after estimation, I would like to plot the fitted values against x,
but I don't need that for z. The following command always gives two
graphs, for both
You should use cfDate[1] as the time origin. You cannot use 08-24-2010 as the
time origin, since that will yield negative times.
Here is the correct solution.
ANXIRR - function (cashFlow, dates, guess, tol=1.e-04){
npv - function (cashFlow, times, irr) {
n - length(cashFlow)
sum(cashFlow
On Aug 25, 2010, at 10:46 PM, Le Wang wrote:
Hi there,
I have a question regarding the plot command after estimation.
Specifically, I estimate a model, say regressing y on x and z. And
after estimation, I would like to plot the fitted values against x,
but I don't need that for z. The
I have written a general root-finder using the secant method.
secant - function(par, fn, tol=1.e-07, itmax = 100, trace=TRUE, ...) {
# par = a starting vector with 2 starting values
# fn = a function whose first argument is the variable of interest
#
if (length(par) != 2) stop(You must specify
Hi, I wanted to create a list of closures. When I use Map(), mapply(),
lapply(), etc., to create this list, it appears that the wrong arguments are
being passed to the main function. For example:
Main function:
adder - function(x) function(y) x + y
Creating list of closures with Map():
plus -
On Thu, Aug 26, 2010 at 12:04 AM, Stephen T. obsessiv...@hotmail.com wrote:
Hi, I wanted to create a list of closures. When I use Map(), mapply(),
lapply(), etc., to create this list, it appears that the wrong arguments are
being passed to the main function. For example:
Main function:
Unless for learning R, you should really consider R.oo or proto packages
that may be more convenient for you (but you don't provide enough
context to tell).
Best,
Philippe
On 26/08/10 06:28, Gabor Grothendieck wrote:
On Thu, Aug 26, 2010 at 12:04 AM, Stephen T.obsessiv...@hotmail.com wrote:
Hi Ravi,
Using days and dividing it by 365 effectively converts the number to years
anyway and allows for the irregular times to be specific to the days.
Also, when I replace dates[1] in your line:
times - as.numeric(difftime(dates, dates[1], units=days) /
365.24) with 2010-08-24 I think I am
Dear r-help,
I took your advice into consideration and i tried to solve my errors. But ,
when I use the command R CMD check namepackage, I find an error in this file
C:/Rpack/namepackage.Rcheck/00check.txt :
* using log directory 'C:/Rpack/namepackge.Rcheck'
* using R version 2.10.1
You have a 64 bit Linux? If so...
Dowload the sources
Do you mean download Linux kernel source code and then compile it on Amazon
EC2?
--
View this message in context:
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Sent
Hi guys,
I am trying to compile 64-bit R 2.11.1 on Solaris 10. I mainly follow the
guide in here
https://www.initworks.com/wiki/pages/viewpage.action?pageId=6521038
The guide suggests that install the customised libiconv, readline under the
designated R installation folder and become the
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