Displaying 20 results from an estimated 520 matches for "cleland".
2006 Nov 23
1
loess lines in xyplot with two or more variables on the left side of a formula
...same panel. I'm able to plot each series
in the same panel like this:
library(lattice)
xyplot(IDUPREV + VALIDAT ~ YEAR | MSA, data = df,
panel = panel.superpose, type="l")
How could I change that so that panel.loess() is applied separately to
each series?
thanks,
Chuck Cleland
--
Chuck Cleland, Ph.D.
NDRI, Inc.
71 West 23rd Street, 8th floor
New York, NY 10010
tel: (212) 845-4495 (Tu, Th)
tel: (732) 512-0171 (M, W, F)
fax: (917) 438-0894
2004 Jun 09
3
Dot chart question
Running R 1.8.1 on a Windows machine
In dotchart, I would like to shrink the labels on the tick marks (that
is, the numbers) without shrinking anything else. I could not find this
in either the Rhelp archives or in ?dotchart, which recmmends cex to
avoid 'label overlap', but cex shrinks all the characters in the plot.
Is there a way to do this?
Thanks
Peter
Peter L. Flom, PhD
2007 Jan 27
3
how to handle a longitudinal data
i have a data set with repeated measures on same people, structure like
below:
id x1 x2 ...
001 10 20 ...
001 8 45 ...
001 4 2 ...
002 ....
002 ...
002 ....
002 ....
003 ....
.......
what is the easist way to show how many observations for each subject id?
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2008 Dec 17
1
Extract Data from a Webpage
...rovidersearch.take_to_rpt?P1=3489&P2=11490
Based on searching R-help archives, it seems like the XML package
might have something useful for this task. I can load the XML package
and supply the url as an argument to htmlTreeParse(), but I don't know
how to go from there.
thanks,
Chuck Cleland
> sessionInfo()
R version 2.8.0 Patched (2008-12-04 r47066)
i386-pc-mingw32
locale:
LC_COLLATE=English_United States.1252;LC_CTYPE=English_United
States.1252;LC_MONETARY=English_United
States.1252;LC_NUMERIC=C;LC_TIME=English_United States.1252
attached base packages:
[1] stats graphics...
2007 Dec 19
3
median of binned values
Dear list,
I have a vector (array, table row, whatever is best) of frequency values
for categories (or bins), and I need to find the median category.
Trivial to do by hand, but I was wondering if there is a means to do it
in R in an elegant way.
The obvious medioan(vector) returns the median frequency for the binns,
and that is not what I want. i.e,:
freq
cat1 1
cat2 10
2004 Jun 06
4
Request help writing a function
I have been wrestling with this function for quite a while, and am not making headway.
1) I want to apply a function to the following columns of a dataframe:
myfunction. <- apply(ph5028[,c(83:107)],2,function(x) ...
2) Within each of the above columns there is a single numeric code, 1, 2 or 3 or an NA.
3) My goal is to determine the percent of time each person used a 2 code. So if a person
2006 Jan 11
3
SPSS and R ? do they like each other?
... and is there also such a nice tool (like spss.get) for exporting
data frames to SPSS? write.table does not keep the data frame labels -
neither did the other exporting tools that I found.
Thanks!
Michael
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2006 Nov 29
3
Aggregating data
[This email is either empty or too large to be displayed at this time]
1999 Jul 12
0
Re: S+ code
Dear Mr. Cleland, SEM-ueser, R-User, ...
there isn't s-plus or R (a GNU-free version of the programming language
S) code for structural equation modelling. I always wondered why. I
personally think the language S, with the implementations S+ and R, is a
good-perhaps the best-environment for statistical ana...
2005 May 19
2
laten class analysis
Dear List,
just a little question,
I am interested in Latent Class Analysis and
I guess if there is a package for this pourpose
thank for you help,
Simone
2008 Jan 18
1
Assigning into each of a list of dataframes
....9865388 0.96288517
4 0.5087024 0.42044870
5 0.9175345 0.09447951
$df2
A B
1 0.3887178 0.2256608
2 0.2642189 0.2135938
3 0.3881635 0.2328115
4 0.9060760 0.1013091
5 0.4578424 0.8167602
I want the variable Y to be added to each data frame in mylist.
thanks,
Chuck
--
Chuck Cleland, Ph.D.
NDRI, Inc.
71 West 23rd Street, 8th floor
New York, NY 10010
tel: (212) 845-4495 (Tu, Th)
tel: (732) 512-0171 (M, W, F)
fax: (917) 438-0894
2007 Sep 19
2
By() with method = spearman
I have a data set where I want the correlations between 2 variables
conditional on a students grade level.
This code works just fine.
by(tmp[,c('mtsc07', 'DCBASmathscoreSPRING')], tmp$Grade, cor,
use='complete', method='pearson')
However, this generates an error
by(tmp[,c('mtsc07', 'DCBASmathscoreSPRING')], tmp$Grade, cor,
use='complete',
2010 May 13
3
How ls() only functions or anything else but functions?
Hello,
How ls() only functions or only data objects (basically anything other than
functions) such as data.frame, numeric ...?
John
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2008 Apr 14
3
Power curves
Hi,
I am trying to create a power curve to show how the power of a t-test varies depending on the mean. Any ideas how I should go about this?
Louisa
_________________________________________________________________
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2005 Nov 10
2
polynomials transformation
Dear All,
Need some help in polynomials transformation to get the coefficients. I have tried "poly.transform" as applied in S-plus but it does not work.
Thanks in advanced for any helps.
Regards.
Abd. Rahman Kassim (PhD)
Head Forest Ecology Branch
Forest Management & Ecology Program
Forestry and Conservation Division
Forest Research Institute Malaysia
Kepong 52109
Selangor,
2006 Aug 24
5
xyplot tick marks and line thickness
Hello,
A made a xyplot using the lattice library in R (latest version).
The publisher of our paper has requested:
1. all tick marks should point inwards instead of outwards.
2. All lines should be thicker (lines, axes, boxes, etc. Everything). Lines is easy...I used: lwd=1.5 but what about the lines of the axes, and the lines that build up the plot itself?....?
Any
2007 Mar 28
3
multi-level modeling & R?
A colleague was asking me if R does multi-level
modelling as opposed to multiple regression. Since I
have no knowledge of multi-level modelling (except 5
minutes googling ) I thought that I would as here.
Does are offer any multi-level modeling packages? It
looked like arm might be one but I was not sure.
Thanks
2008 Feb 24
3
Newbie: Where is lmFit function?
Hi Everyone,
I am trying to use lmFit function; however, i cannot find it function
anywhere.
I have been trying to find the function in Bioconductor and elsewhere. I
re-install bioconductor source, update package and update R as well. no luck
Is there a command in R where i can just type, and it will download it for
me?
--
View this message in context:
2006 Feb 28
2
vector math: calculating a rolling 12 row product?
I have a dataframe of numeric values with 30 ?rows?
and 7 ?columns?.
For each column, beginning at ?row? 12 and down to
?row? 30, I wish to calculate the ?rolling 12 row
product?. I.e., within each column, I wish to
multiply all the values in row 1:12, 2:13,
19:30.
I wish to save the results as a new dataframe, which
will have 19 rows and 7 columns.
2008 Jul 29
1
Problem reading a particular file with read.spss()
...eeds to
close. We are sorry for the inconvenience."
It get a similar result trying to load the file under Rterm.exe. The
file opens without any trouble in SPSS version 16.0.2 (April 10, 2008).
For anyone willing to investigate, I placed a copy of the SPSS file here:
http://www.chuckcleland.net/mySPSSfile.sav
I would be grateful if someone could help to figure out why this file
causes a problem.
thanks,
Chuck
--
Chuck Cleland, Ph.D.
NDRI, Inc. (www.ndri.org)
71 West 23rd Street, 8th floor
New York, NY 10010
tel: (212) 845-4495 (Tu, Th)
tel: (732) 512-0171 (M, W, F)
fax: (917)...