Monday March 31 2003 
Time  Replies  Subject 
11:13PM 
0 
Windows XP specific memory problems 
10:09PM 
4 
Convert char vector to numeric table 
10:06PM 
1 
nonpos. def. varcov matrix 
8:53PM 
1 
model.tables limitations 
8:42PM 
2 
power.t.test 
8:02PM 
2 
Does R have an inverse wishart distribution? 
7:46PM 
4 
monte carlo method for circle area 
5:55PM 
1 
circle 
4:11PM 
2 
rbind data.frames with character vectors? 
3:48PM 
2 
Using R2HTML 
3:40PM 
0 
raw image data in R and ipred 
11:00AM 
3 
Three graphs 
9:33AM 
1 
ccf 
9:22AM 
7 
pointbiserial correlation 
8:05AM 
1 
memory.size problem 
7:46AM 
4 
"font problems in X11 with linux R" 
7:30AM 
0 
SAM: Significance of Microarray Analysis availability in R 
4:47AM 
0 
read.table command in Rweb 
4:00AM 
6 
integer overflow error problem 
12:10AM 
1 
Windows and Linux version 
12:08AM 
0 
fitted() and loglm() 

Sunday March 30 2003 
Time  Replies  Subject 
9:56PM 
0 
rhelp: mozilla and R  again 
9:30PM 
3 
Lattice: Saving multiple plots 
9:08PM 
2 
Problem to install RMySQL 
8:49PM 
3 
problems with read.table in windows 
7:17PM 
5 
Fortran compilation problem 
6:29PM 
1 
memory problems in NLME 
6:11PM 
1 
Suggestion: add log argument to stripchart 
12:11PM 
1 
Two bugs in TS package? 
8:13AM 
2 
Question on Plotting 
6:18AM 
0 
Request for confirmation. 
3:25AM 
3 
Using the R commands 
1:19AM 
1 
simple test of lme, questions on DF corrections 

Saturday March 29 2003 
Time  Replies  Subject 
9:49PM 
0 
pdf function assignment (beginner''s question) 
6:37PM 
1 
Goodness of fit tests 
2:18PM 
1 
Temporarily turn off certain warnings 
6:55AM 
1 
"ordered dotplot" 
1:13AM 
2 
obtaining coefficients from a pspline fit 
12:03AM 
2 
Repeated measures help 

Friday March 28 2003 
Time  Replies  Subject 
11:58PM 
0 
Observational data questions <not Slanguage question> 
10:36PM 
1 
overlapping pattern match (errata 2.0) 
10:31PM 
0 
overlapping pattern match (errata) 
6:00PM 
0 
Ajusts in nls 
5:16PM 
0 
[Fwd: Re: st: Multinomial logistic regression under R and Stata] 
4:44PM 
4 
Problems with data.matrix 
4:42PM 
15 
Statistical computing 
4:14PM 
0 
HTML help pages unreadable 
4:00PM 
0 
header intact 
3:52PM 
0 
weighted least squares 
2:00PM 
0 
Problems with make.cdf.package 
1:43PM 
2 
Tweedie, dglm in R ? 
11:49AM 
1 
Poisson Regression 
10:14AM 
0 
the chisquare test for trend / Correction 
9:09AM 
5 
Testing for randomness 
7:04AM 
3 
the chisquare test for trend 
5:55AM 
2 
file.show("morley.tab") responds "NO FILE" 
1:34AM 
2 
overlapping pattern match 

Thursday March 27 2003 
Time  Replies  Subject 
9:52PM 
11 
mozilla and R  again 
9:17PM 
4 
Logical Indexing of vectors  Odd Behavior or.... 
7:47PM 
2 
Question about R^2 in nonlinear models 
7:09PM 
2 
get the values of unique ID 
5:17PM 
1 
Re: [Rd] R1.7.0 beta available 
2:54PM 
5 
Plot of Canonical Correlation Analysis 
2:49PM 
2 
About ability of "allShortestPaths" function in e1071 package 
2:12PM 
0 
random error and grouping variable correlated 
1:22PM 
7 
Request 
12:59PM 
0 
Using ? for object summaries 
12:27PM 
0 
a statistic question about chisq.test() (aprilsun) 
11:24AM 
4 
How to obtain final gradient estimation from optim 
10:38AM 
2 
Na action with Lowess smoothing 
10:32AM 
4 
Multinomial logistic regression under R and Stata 
8:30AM 
0 
missing value analysis for survey data 
12:25AM 
0 
R TclTk iwidgets::combobox 

Wednesday March 26 2003 
Time  Replies  Subject 
11:41PM 
1 
nls 
10:30PM 
0 
R TclTk iwidgets::comboboc 
10:25PM 
2 
Categorical data (Monte Carlo exact pvalue) 
7:35PM 
3 
a statistic question about chisq.test() 
7:35PM 
3 
hist overlay... 
6:35PM 
3 
2 scatter plots in the same graphic window.... 
5:35PM 
1 
Simple NLME problem (I hope) 
3:23PM 
0 
CMDS 
2:35PM 
2 
Spatial Clustering 
12:13PM 
2 
Plotting KM Curve when have several strata 
11:20AM 
3 
ifelse() 
11:10AM 
1 
Solving equations 
2:59AM 
1 
RSPerl, R1.6.2 and Perl5.8.0 

Tuesday March 25 2003 
Time  Replies  Subject 
11:58PM 
2 
How to write the output of a function into a file? 
9:48PM 
3 
Re: Bar plot with variable width (down a drill hole)  now missing intervals? 
9:01PM 
2 
Help with data.frame subsets 
8:42PM 
2 
locfit troubles 
7:19PM 
0 
Howto calculate MS from a unbalanced data 
4:56PM 
2 
Bar plot with variable width (down a drill hole)? 
2:50PM 
1 
R help: correlograms 
2:06PM 
3 
geoR vector length error 
12:33PM 
1 
Help : stablereg parameter interpretation 
11:47AM 
1 
Cannot rebuild src.rpm 
11:07AM 
5 
R software for Hastie book 
8:54AM 
0 
isoMDS results 

Monday March 24 2003 
Time  Replies  Subject 
10:00PM 
3 
using tapply with a matrix? 
9:17PM 
0 
compiling R on Linux w/ Intel compilers 
8:33PM 
1 
Winedt and R on Windows XP 
7:49PM 
0 
how to show a section of a matrix neatly (or row by row ) that satisfies some condition 
7:40PM 
1 
negative binomial regression 
7:40PM 
1 
how to show a section of a matrix neatly (or row by row) that satisfies some condition 
5:56PM 
2 
Box Plot Question 
5:47PM 
1 
cross correaltion 
5:01PM 
2 
Problem with the step() function 
3:48PM 
6 
Is it a bug in list() behavior? 
1:25PM 
0 
About Scheffe test 
1:23PM 
2 
Help regarding C/C++ usage .. 
1:09PM 
0 
cross correlation 
11:37AM 
1 
Install on Solaris 5.9 
7:31AM 
1 
wavelet model on time series in R? 
7:29AM 
0 
arima 
4:36AM 
3 
Robust standard errors 
4:05AM 
10 
Scripting with an external editor 
1:19AM 
0 
Summary: extracting the names of the dataframe and variables 
1:14AM 
1 
APC Modelling and the GLM function 

Sunday March 23 2003 
Time  Replies  Subject 
10:18PM 
1 
fontsize 
7:41PM 
1 
Loess 
4:03AM 
0 
Is there any good tool for Hanling Data on the Net 
1:09AM 
1 
export lm object to ascii from batch mode 

Saturday March 22 2003 
Time  Replies  Subject 
11:27PM 
1 
extracting the names of the dataframe and variables in aov or lm 
7:17PM 
2 
How to check a matrix is positive definite? 
7:07PM 
6 
Sample weights 
12:32PM 
0 
Two courses in Philadelphia 

Friday March 21 2003 
Time  Replies  Subject 
8:36PM 
5 
manipulating "..." inside a function 
7:21PM 
5 
Problem with read.table 
5:59PM 
1 
SavitzkyGolay Derivative and Smoothing 
5:35PM 
3 
rsync 
3:01PM 
0 
ArrayAnalyzer and Bioconductor 
2:43PM 
1 
barplot legend size 
2:19PM 
0 
Redundancy in Variables (and canonical correlation) 
2:19PM 
3 
Trying to make a nested lme analysis 
2:00PM 
1 
trellis plot 
1:00PM 
1 
Integer manipulation 
11:35AM 
0 
Postscript PB 
10:54AM 
0 
Postscript PBs 
8:45AM 
0 
CCA (Curvilinear Component Analysis) 
8:43AM 
0 
Re: [BioC] mva functions 
6:45AM 
1 
The best way to end up with TIFF {Was: end up with WMF) 

Thursday March 20 2003 
Time  Replies  Subject 
11:39PM 
4 
command line limit? 
11:08PM 
1 
param() in R 
10:12PM 
1 
Plot multi series on one plot 
9:59PM 
1 
Install R on unix 
8:01PM 
0 
RH 8.0, Mozilla and help.start()  Deja Vu All Over Again.... 
6:56PM 
1 
Question about Error due to memory allocation issue 
6:30PM 
1 
ANOVA: F value >1 or < 1 
5:46PM 
1 
Measure of Redundancy In Variables 
3:09PM 
1 
dataframes (The message that once had a suspicious header) 
3:02PM 
0 
[Fwd: Your message to Rhelp awaits moderator approval] 
2:41PM 
1 
combining dataframes 
11:48AM 
2 
Matrix problems 
4:44AM 
3 
R1.6.2: installation problem on Solaris 2.8 

Wednesday March 19 2003 
Time  Replies  Subject 
11:56PM 
4 
The best way to end up with WMF files 
8:12PM 
0 
Mixed effects model 
7:29PM 
0 
Sorry for the mistake! 
7:28PM 
2 
Some more general questions 
7:14PM 
0 
Numerical precision and signif() 
7:14PM 
0 
graspeR problem 
6:15PM 
2 
Time Serieslike barplot? 
5:00PM 
2 
Center of Closed Contour 
4:45PM 
4 
How would I analyse data like this? 
10:35AM 
1 
adjusting a periodical function to a time series 
9:26AM 
1 
postscript problems 
9:09AM 
0 
RMySQL 
4:25AM 
3 
rhelp using random generating 

Tuesday March 18 2003 
Time  Replies  Subject 
9:26PM 
0 
frailty variance parameter in survreg() 
9:20PM 
2 
How to free memory 
8:24PM 
3 
Tukey''s HSD 
8:02PM 
1 
COURSE***R/Splus Fundamentals and Programming Techniques***April 2003  Boston and San Francisco 
7:47PM 
0 
Course on "Data Mining and Explorative Multivariate Data Analysis" 
7:40PM 
0 
Passing Bablok regression 
7:37PM 
2 
Change directory in script 
6:26PM 
3 
temperature profiles on maps 
5:03PM 
2 
weighted.mean and na.rm=T in R1.6.2 
2:49PM 
4 
network connection 
2:45PM 
0 
SciViews R GUI preview version available 
2:01PM 
2 
Strange and disturbing bug 
1:07PM 
2 
To load Addons 
12:02PM 
0 
Réf. : 
10:48AM 
3 
References of R in use 
6:40AM 
3 
Package installation when $RHOME is not writable (win) 
5:37AM 
1 
Simulation 
5:32AM 
1 
How to use R from Delphi 
2:48AM 
1 
Building hdf5 for mswindows 

Monday March 17 2003 
Time  Replies  Subject 
10:09PM 
2 
help with likelihood contour plot 
10:06PM 
1 
search engine dose not work for Morzilla 
9:39PM 
1 
postscript and ps.option metrics 
9:01PM 
2 
scoping rules; summary 
7:42PM 
1 
Using .Call function to do matrix calculation 
7:19PM 
0 
automated legend for points.geodata 
4:52PM 
3 
Error in file(file, "r") 
4:30PM 
2 
Trying to build R1.6.2 under sparcsunsolaris2.9. 
4:16PM 
2 
"rsquare in LME? 
4:11PM 
1 
glm gamma errors 
2:20PM 
2 
Filled box on graph 
2:06PM 
0 
Season Determination 
2:06PM 
0 
Short Course in R: University of Hertfordshire 
1:42PM 
4 
X11 connection error in web cgi mode only 
12:33PM 
0 
Problem with pdf device. 
7:45AM 
0 
file encoding 
7:01AM 
2 
how to use R in delphi or vb ? 
5:50AM 
2 
search function 
3:52AM 
3 
RMySQL Install Problem 
3:16AM 
1 
scoping rules 
2:28AM 
1 
"Debugging R from within Emacs" 
1:48AM 
0 
BuiltIn Wilks Lambda for lda? 
12:39AM 
1 
Error in making R1.6.2. 

Sunday March 16 2003 
Time  Replies  Subject 
1:38PM 
0 
scientific notation 
11:49AM 
5 
xgobi? 

Saturday March 15 2003 
Time  Replies  Subject 
9:53PM 
7 
round() seems inconsistent when rounding 5s 
6:47PM 
4 
Help.start, .Renviron , and .Rprofile 
4:53PM 
2 
plots to metafile and x/y ratio 
2:22PM 
1 
formula, how to express for transforming the whole model.matrix, data=Orthodont 
10:09AM 
0 
configure, IBM AIX and checking whether leap seconds are treated according to POSIX... 
1:55AM 
1 
Keywords 
12:25AM 
1 
quote supression 
12:14AM 
2 
Help with reading data 

Friday March 14 2003 
Time  Replies  Subject 
11:49PM 
0 
Summary: length() "ain''t misbehavin''" after all 
10:41PM 
0 
RSessionDA 1.0rc1 released. 
10:17PM 
1 
Formatting significant digits with trailing zeros 
10:09PM 
4 
boxplots with multiple numerical variables 
9:44PM 
1 
Using Arial font in linux 
8:54PM 
3 
plot 
7:26PM 
1 
multiple plots... 
5:40PM 
2 
odd behaviour of ''while''? 
3:44PM 
1 
Fw: length() misbehaving?: More 
3:35PM 
6 
length() misbehaving? 
3:12PM 
4 
numbers and decimal points 
2:48PM 
6 
logistic regression 
2:19PM 
4 
grasper installation 
12:43PM 
1 
any european maps 
10:15AM 
1 
Two graphs of different sizes on one devise. How to? 
10:05AM 
0 
gls with "crossed heteroscedasticity" 
8:53AM 
1 
Execution halts after some time. 
8:32AM 
3 
iterative reweighting in LOESS function 
2:26AM 
4 
R "FinMetrics" Package Available? 

Thursday March 13 2003 
Time  Replies  Subject 
11:00PM 
1 
small error in regression tests 
10:44PM 
5 
Looking for GUI 
10:11PM 
2 
memory limit 
8:32PM 
1 
[OT] Dirk, check your email configuration 
6:21PM 
4 
RODBC and Excel in Widows 
4:56PM 
1 
how to install BLAS on Solaris 
4:36PM 
0 
Repeated measures 2way anova  robustness question 
4:36PM 
2 
Median Regression Model 
4:00PM 
0 
solve lagrange 
2:07PM 
6 
error installing R on linux 8.0 
1:27PM 
1 
GARCH estimation 
11:02AM 
0 
standardized residuals 
10:04AM 
1 
geepack(geese) vs. glmmPQL 
3:29AM 
1 
apply() and unary operators 
2:42AM 
0 
Offtopic  book references 

Wednesday March 12 2003 
Time  Replies  Subject 
10:05PM 
0 
avoiding excel''s odbc limit on number of columns 
9:34PM 
1 
apply with two matrixes 
8:17PM 
10 
png plots 
7:25PM 
1 
Rcmd BATCH 
6:18PM 
5 
quasipoisson, glm.nb and AIC values 
6:05PM 
3 
Independent Components Analysis 
4:22PM 
2 
variables in a correlation matrix 
3:45PM 
8 
R help 
2:08PM 
0 
Thank you all! 
2:04PM 
0 
job opportunity 
1:28PM 
0 
temporal evolution and variance after rotation of eof 
1:13PM 
6 
Simple question about export 
12:01PM 
1 
simulating ''nonstandard'' survival data 
10:54AM 
2 
Filling graphic objects 
10:46AM 
0 
[S] Gstat: multivariable geostatistics for S (R and SPlus) 
8:43AM 
1 
problems with numerical optimisation 
7:46AM 
2 
How to collect the Rtools to build packages 
5:04AM 
0 
help Cox ph models 
4:14AM 
0 
point characters in text 
2:37AM 
5 
[OT] Appropriate test? 
12:34AM 
1 
manuals source (i.e. *.tex) files 

Tuesday March 11 2003 
Time  Replies  Subject 
11:00PM 
5 
RGraphics: Scaling axis 
10:04PM 
0 
different file types 
8:59PM 
0 
Stair steps plotting 
8:22PM 
0 
About statistical independece or cumulant books or papers 
8:08PM 
9 
changing pen mode [or adjusting for overlapping points?] 
5:51PM 
0 
Time series application question 
5:21PM 
1 
MAPE 
4:07PM 
2 
objectname completion 
2:43PM 
0 
correction 
2:22PM 
1 
about yesterday predicted values 
2:20PM 
2 
about the "minidistribution" (R for Win ) 
2:12PM 
2 
beginner plotting with dates 
12:06PM 
1 
Goodman / Kruskal gamma 
10:58AM 
0 
RE: mvtnorm 
7:43AM 
0 
Interrater and intrarater reliability 
4:41AM 
3 
fft help 

Monday March 10 2003 
Time  Replies  Subject 
11:54PM 
0 
including point char. in plotted text string 
10:16PM 
2 
Biplots 
6:02PM 
0 
ape 1.0 is on CRAN 
5:48PM 
2 
graphics backgrounds from gray to white in png() 
4:49PM 
0 
SNOW: Simple Parallel Computing in R 
4:43PM 
2 
helpCox ph model 
4:29PM 
1 
predicted values 
3:39PM 
1 
Leastsquares means 
3:13PM 
1 
GLM 
2:29PM 
0 
FAO: Staff & Students (Glasgow University & Glasgow Players) 
12:53PM 
3 
DLL error after update.packages 
12:21PM 
6 
terms.formula 
11:50AM 
1 
ylim in plot(corresp(,df=2)) 
11:17AM 
4 
sampling and gini index 
7:48AM 
1 
rpart returning only 1 node 
6:08AM 
4 
Creating a sequence of variables in a data frame 
4:20AM 
1 
R command line 
1:51AM 
4 
VIM Syntax Highlighting 

Sunday March 9 2003 
Time  Replies  Subject 
10:11PM 
0 
Setting a toggle parameter in winMenu 
1:25PM 
2 
getMethod in a setMethod context 
9:33AM 
1 
lists of lists 
9:16AM 
1 
strings spanning multiple lines 
12:30AM 
1 
Mac OS X help 

Saturday March 8 2003 
Time  Replies  Subject 
10:40PM 
1 
Getting rid of "outer box" in cloud() 
9:14PM 
3 
where is kurtosis?? 
7:54PM 
1 
How to transfer lists to other computers or to SPlus 
6:07PM 
3 
hist() basic question 
5:01PM 
1 
How to store histogram plots 
4:56PM 
0 
RE: Text Rotation (was: Take care with codes()!) 
3:12PM 
0 
RE: Text Rotation (was: Take care with codes()!) 
2:31PM 
2 
FIX: pscales=list(...) and splom 
12:43AM 
2 
Looking for noncentral F quantile 

Friday March 7 2003 
Time  Replies  Subject 
10:04PM 
1 
general matrix inner product? 
8:44PM 
0 
New version of pmg  Poor Man''s GUI 
7:26PM 
1 
help on haplo.score 
7:10PM 
1 
REML option in gstat 
3:27PM 
2 
Type IV sum of squares 
3:10PM 
1 
multiuser installation 
2:36PM 
5 
Moving average 
2:11PM 
2 
"Local trend surfaces" Ex from V&R MASS 
10:30AM 
0 
Job opening: Biostatistics expert 
9:22AM 
1 
Cluster analysis 
7:21AM 
1 
Boot 
5:00AM 
29 

4:24AM 
1 
Exact logistic regression 
12:36AM 
1 
column name changes based on substrings 

Thursday March 6 2003 
Time  Replies  Subject 
11:47PM 
3 
compiling R on sparcsolaris 
11:44PM 
1 
Calling R program from an IDE 
11:41PM 
2 
Preferred C++ compiler under Windows 2000 
11:14PM 
11 
type III Sum Sq in ANOVA table  Howto? 
10:26PM 
3 
multiple plots and postscript() 
10:23PM 
0 
Mixed up threads 
10:21PM 
0 
Initial release of RSessionDA 
9:26PM 
0 
Resizing R console window (was BSOD with ESS...) 
9:11PM 
1 
Proper way to document print( ) functions 
7:42PM 
1 
Suppressing row labels. 
7:14PM 
2 
Error in terms.default() 
6:32PM 
5 
question about model formula 
6:08PM 
8 
Followup: copypaste graphics from R to Word on Mac OS X 
3:52PM 
1 
least absolute deviation regression 
2:46PM 
1 
Problems with variable types. 
2:33PM 
4 
tkexit 
2:22PM 
1 
post mail 
12:48PM 
2 
[stuart.leask@nottingham.ac.uk: R in your pocket on a Sharp Zaurus] 
10:43AM 
0 
Correlation test 
10:38AM 
2 
anova subhypotheses 
7:23AM 
3 
Timezones 
1:02AM 
0 
loop avoiding on time interval intersects 

Wednesday March 5 2003 
Time  Replies  Subject 
9:52PM 
0 
rmutil?? 
9:36PM 
10 
how to find the location of the first TRUE of a logical vector 
9:34PM 
1 
cor.test in matrices 
9:21PM 
1 
printing POSIXct values in table labels 
7:54PM 
2 
problem with cclust[er] package 
7:48PM 
0 
PL/R is being noticed in the PostgreSQL community 
7:26PM 
4 
reading in tab delimited data in a loop 
7:17PM 
1 
problem with ccluster package 
6:51PM 
4 
reserved words documentation 
6:40PM 
1 
Does barplot handle log scales? 
2:06PM 
1 
Dataframe in loop 
7:51AM 
4 
BSOD with ESS under win2000 
6:05AM 
8 
How to draw several plots in one figure? 
3:21AM 
0 
Autologistic regression 
2:14AM 
1 
logistic regression for repeated measurement 

Tuesday March 4 2003 
Time  Replies  Subject 
8:38PM 
6 
How to extract R{i} from lme object? 
6:37PM 
0 
Disregard:"problem at installing Rade" 
6:17PM 
1 
problem at installing Rade 
6:03PM 
1 
Sample size and stepAIC, step, or AIC 
5:45PM 
0 
implementing ecological models in R 
4:40PM 
5 
rhelpbounces and rdevelbounces email? 
4:37PM 
0 
tseries contains a class for irregularly spaced time series 
3:40PM 
2 
suggestion for addition to Rlang.texi 
3:14PM 
0 
Williams'' corrected Gtest 
3:04PM 
0 
Unit root test for panel data 
2:37PM 
4 
linear model with arma errors 
2:17PM 
1 
(no subject) 
12:29PM 
0 
Instability in package gld in R? 
11:59AM 
5 
Parallel programming using R 
10:30AM 
2 
tex/pdf? 
9:54AM 
0 
Recall: Embed R in other applications 
9:43AM 
0 
Embed R in other applications 
5:58AM 
2 
log axis assignment 
5:10AM 
5 
How to estimate or approximate a 3D surface 
4:15AM 
3 
for loop problem 
3:37AM 
5 
writing several command line in R console 
12:54AM 
0 
Finally get SJava work 
12:23AM 
1 
R version conflict. 

Monday March 3 2003 
Time  Replies  Subject 
11:06PM 
1 
transition matrix problem 
10:48PM 
0 
lm, gee and lme 
8:43PM 
0 
[despammed] RE: multidimensional function fitting 
6:24PM 
1 
optimization tools 
6:02PM 
2 
saving a plot to a file 
2:33PM 
3 
Turning a string into an expression 
1:13PM 
5 
(no subject) 
12:41PM 
1 
density(): obtaining pvalues 
5:39AM 
2 
samin and vmmin 
3:40AM 
3 
using data() in an example 
3:16AM 
5 
Use Rterm in rxvt for Cygwin? 
2:25AM 
3 
Q: BestPractice for SwingGUI calling Rcode on Windows? 
12:53AM 
2 
How to change the default library directory? 

Sunday March 2 2003 
Time  Replies  Subject 
11:41PM 
0 
gss_0.82 
7:34PM 
4 
ESS+R not closing gracefully 
4:20PM 
2 
model.frame.default problem in function definition 
3:42PM 
1 
A quirk in `transform''? 
9:10AM 
1 
Dynamically changing point''s symbol in grid.points... 
5:40AM 
1 
''methods'' and "[<" 

Saturday March 1 2003 
Time  Replies  Subject 
5:27PM 
0 
debug 
4:58PM 
1 
error message from gls(), unstructured in lower triangle, identical diagonal, help. 
2:21AM 
0 
is.empty for formal class object 