On 27/09/2013 21:01, Bert Gunter wrote:
On Fri, Sep 27, 2013 at 12:44 PM, Sarah Goslee sarah.gos...@gmail.com wrote:
It's a straightforward trigonometry problem, isn't it?
Indeed! ( (r,theta) to (x,y) coordinates ) . So I wonder if this is
a homework problem. If so, the OP should note that
This is Circle 8.1.6 of 'The R Inferno'.
http://www.burns-stat.com/documents/books/the-r-inferno/
Pat
On 27/09/2013 19:20, Mariki Zietsman wrote:
I have a data frame frugivore.abundance.S1 where some columns are factors and others are
numbers.For example these are my independent variables
Hi all,
I am using COX LASSO (glmnet / coxnet) regression to analyze a dataset of
394 obs. / 268 vars.
I use the following procedure:
1. Construct a coxnet on the entire dataset (by cv.glmnet)
2. Pick the significant features by selecting the non-zero coefficient
under the best lambda
Hi Jim, vectorField worked a treat - thanks!
On 28 September 2013 01:57, Jim Lemon j...@bitwrit.com.au wrote:
On 09/28/2013 04:56 AM, Conor Ryan wrote:
I am trying to plot points on a map for each ship locations (lat/long),
where
each point is a line whose angle (degrees) denotes ships
Certainly not a homework question. Elementary questions do not necessarily
indicate that one is a student! Always learning...
Dr Conor Ryan
On 28 September 2013 11:39, Patrick Burns pbu...@pburns.seanet.com wrote:
On 27/09/2013 21:01, Bert Gunter wrote:
On Fri, Sep 27, 2013 at 12:44 PM,
Hi Greg, thanks for your help. I found vectorFields, as suggested by Jim
Lemon, in plotrix to be slightly easier (given my relatively basic R
language knowledge!). Kind Regards, Conor
On 27 September 2013 22:07, Greg Snow 538...@gmail.com wrote:
The ms.arrows along with my.symbols in the
This appears to be a statistics, not an R-help question, so should
probably be asked on a statistics list, not here (e.g.
stats.stackexchange.com).
But if I understand your issue correctly, perhaps the heart f the
matter is: why do you think a stable fit must explain a lot of the
variation? Feel
I couldn't get the number you showed below each column number. How did you get
that one?
library(XLConnect)
wb- loadWorkbook(is_matrix1.xls)
dataRM- readWorksheet(wb,sheet=is_matrix,rownames=1)
mat1- as.matrix(dataRM)
different - function(x, y) x == 1 y == 0
dat-
Hi all,
I am evaluating survival models using Brier score (peperr) and Harrel's
C-Index (Hmisc).
I am wondering:
1. What would be considered a good fit according to these scores (like the
heuristic levels we have for R square in linear regressions) ?
2. Are there any papers to cite on the
On Sep 28, 2013, at 2:39 AM, E Joffe wrote:
Hi all,
I am using COX LASSO (glmnet / coxnet) regression to analyze a
dataset of
394 obs. / 268 vars.
I use the following procedure:
1. Construct a coxnet on the entire dataset (by cv.glmnet)
2. Pick the significant features by
This entire procedure is not valid. You cannot use a penalized method for
selecting variables then use an unpenalized procedure on those selected.
Frank
David Winsemius wrote
On Sep 28, 2013, at 2:39 AM, E Joffe wrote:
Hi all,
I am using COX LASSO (glmnet / coxnet) regression to analyze a
On Sep 28, 2013, at 8:14 AM, E Joffe wrote:
Hi all,
I am evaluating survival models using Brier score (peperr) and
Harrel's
C-Index (Hmisc).
It's spelled 'Harrell'.
I am wondering:
1. What would be considered a good fit according to these scores
(like the
heuristic levels we have
Hi:
I have a question related to the R Code which calls BUGS. I have run the
model in WinBUGS and it runs fine giving me the expected results. Below is
the automation code used when I had single outcome or univariate data for
Ys. Now I want to use it for multiple outcomes. So the trial.data
Can you please upgrade R to R-3.0.2 and use the parallel package?
And can you please explain why you want to start the workers manually?
I'd be happy to look into the details if you can reproduce the problem
with a recent version of R and the parallel package.
Best,
Uwe Ligges
On
Thanks all -- ok, so the symbolic link issue is a distinct
possibility, but fundamentally doesn't solve the issue since most
users will have symbolic links on their machines SOMEPLACE, so a full
drive scan will run into these issues -- is list.files calling find,
or is it using a different
On 28-09-2013, at 19:51, Jonathan Greenberg j...@illinois.edu wrote:
Thanks all -- ok, so the symbolic link issue is a distinct
possibility, but fundamentally doesn't solve the issue since most
users will have symbolic links on their machines SOMEPLACE, so a full
drive scan will run into
Hi All,
I am using Rx64 3.0.1 on Windows 7 x64, and wanted to get two last rows from
dataset. First, I tried
library(datasets)
data-airquality
data[nrow(data)-1:nrow(data),]
and received 152 rows sorted desc. Could you explain why it worked this way? I
changed the extract line to:
Hi,
I really don't know what is wrong with my code, I have a character object
and I need to have a POSIXlt object; my code is:
date=Mon, 23 Sep 2013 06:45:05 GMT
as.POSIXlt(date,format=%a, %d %b %Y %H:%M:%S %Z)
[1] NA
even with
strptime(date,%a, %d %b %Y %H:%M:%S %Z)
[1] NA
Also if I remove Mon,
Hi,
I was trying to get an answer to this issue:
bookRatingData - read.table(file.choose(),header=TRUE,nrows=1048570)
Warning message:
In read.table(file.choose(), header = TRUE, nrows = 1048570) :
incomplete final line found by readTableHeader on
'C:\Users\srinivas\Downloads\BX-Book-Ratings
Hi,
I have found myself often doing simple statistical analysis using Linux command
line on a single dataset. Therefore, I put a perl script together, which makes
it
easier:https://github.com/religa/statshttps://github.com/religa/stats/blob/master/r
The idea behind simpleR is that it becomes a
First, I tried
library(datasets)
data-airquality
data[nrow(data)-1:nrow(data),]
and received 152 rows sorted desc. Could you explain why it worked this way?
I changed
the extract line to:
data[(nrow(data)-1):nrow(data),]
and then I received what I wanted but still am curious about
The issue is not symbolic links per se, but ones that form loops.
Note that you can detect such loops by running 'find -L ...' and
looking for the error messages. (find by default does not follow
any symbolic links, which can be a problem also.)
It is a shortcoming of the current version of
On 13-09-28 11:18 AM, Srinivas Sridhara wrote:
Hi,
I was trying to get an answer to this issue:
bookRatingData - read.table(file.choose(),header=TRUE,nrows=1048570)
Warning message:
In read.table(file.choose(), header = TRUE, nrows = 1048570) :
incomplete final line found by
On 09/29/2013 01:27 AM, Leopoldo Catania wrote:
Hi,
I really don't know what is wrong with my code, I have a character object
and I need to have a POSIXlt object; my code is:
date=Mon, 23 Sep 2013 06:45:05 GMT
as.POSIXlt(date,format=%a, %d %b %Y %H:%M:%S %Z)
[1] NA
even with
strptime(date,%a,
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