Displaying 20 results from an estimated 1100 matches similar to: "strange error in "robust" package"
2003 Sep 21
3
Z aware interpolation
Hello again,
There is any package which does Z aware (real 3D) interpolations?
It can be any method (IDW, kriging or spline) but it should take into
consideration not only x and y coordinates for interpolation, but
also z coordinate. I looked into different packages but it seems i
didn't find the right one.
The ultimate goal is to import the output into a GIS (Geographical
Information
2003 Aug 28
4
R-help: beginner question
Hi,
I am a beginner user of R. I have a trivial question ? I am almost
ashamed I cannot figure it out does not matter how many times I
am reading the help.
I have a table in .txt format, tab delimited. I can read it with
?read.delim()? with no problems.
Afterwards I would like to use boxplot function to see if there
are any outliers in the column 5 of my data called TPAH16.ppm
In the
2003 Aug 28
1
R-help: beginner question - Thank you! OUTLIERS
Hi,
Thank you so much for all your rapid answers. I am impressed.
What i didn't know was that i have to assign my data to an object
to work further on. It was not clear from the help (at least for me)
that 'data()' itself is calling data already in R packages. All of you
make that clear.
Now, if you can suggest any good package to use for identifying
outliers it will be great
2004 Aug 09
2
Memory failure!!!!
Hi,
I am trying to increase the memory R can use. I am running R
under Windows on a machine with 2 GB of physical RAM and 4GB
of paged memory.
I wrote in the R property windows --sdi --max-mem-size=4094M,
but the R itself when it is doing a bayesian modelling (geoR) it
stops at 1,096K and i get memory errors because it cannot
allocate a new segment of about 500K of memory.
I don't have
2003 Sep 03
1
plot only partial plots
Hi everybody,
I would like to plot only a part of a data frame, and identify the
IDs for all the points with values higher than a certain value. I
will try to be more explicit:
I did a qqnorm plot of my data. It is obvious from the plot that
all the sample quantiles which are in Theoretical Quantiles = or >
than 1 belong to another group. To be sure about that I plot the
cooks.distance
2003 Sep 21
1
aov and data behind plots
Hi y'all,
First of all many thanks to Christian, Petr and Spencer for their
replies. Your answers helped me to learn few more triks since then
;-)
Now i have a question relating "aov". When i use aov i end up with
4 plots. How do i "see" the data behind those plots? I know about
summary - but this gives me only some statistical info. Also, if i
want to identify which
2004 Jun 23
8
Automatic routine - help
Hi,
I would like to write a little automatic routine in R, but i am a too
much of a beginner for that. I will appreciate any help regarding this
particular problem.
Let?s suppose I have a data.frame with j columns (from 1 to n) and i
rows (from 1 to p). I would like to write a procedure which reads
every column j (j from 1 to n) and compare each value with the
interval [0,1]. If z(i,j) is
2004 Mar 24
5
colors, lines, characters .... documentation
Hi,
Very so often when i am plotting something, doing a histogram, or
whatever i am struggling to find out which are the numbers for
different colors, palette names, types of lines, symbols, etc. Is
there any documentation on line with all these numbers / names
and the associated symbol / color???
For example if i am using the command image it uses a palette
from red to yellow, with red the
2003 Nov 17
4
cumulative distribution functions
hi y'all,
I am wondering if there is any special command, function,
package, etc to help me doing a cumulative distribution function,
with y-scale - probability scale.
I tried the help in R and i got the following answers:
cumsum(base) Cumulative Sums, Products, and Extremes
ecdf(stepfun) Empirical Cumulative Distribution Function
cpgram(ts) Plot
2004 Jul 14
0
Ord-Getis O statistics
Hi list,
I am wondering if anybody knows if the Ord-Getis O statistics of
local spatial autocorrelation in the presence of the global spatial
association is implemented in any of the R packages - and of
course in which package ;-)). I am not interested in Getis-Ord G
statistics, for now.
Thank you in advance,
Monica
Monica Palaseanu-Lovejoy
University of Manchester
School of Geography
2003 Aug 29
0
vardiag package help
Hi,
First of all a big THANK YOU to all who answered me
yesterday.
I am back to my problems with outliers. I did a qqnorm on my
data (as somebody suggested), but I will like to compare results
doing other plots as well. I used ?cook.distance? on lm and glm
objects, but still I am not happy with that.
So now I am loading the ?vardiag? package. First thing is to
transform my data
2004 Jun 23
4
Automatic routine - NEW
Hi Again,
First of all thank you for all the responses to my previous query.
Your answers were very helpful and I did the job ;-). Now I hope you
can answer as quick the following (sorry I am invading you with
trivial questions):
Let?s use again the following data.frame example:
DF <- data.frame(x=rnorm(5), y=rnorm(5))
I want to obtain a new data.frame (or matrix) that contains only n
2004 Mar 05
1
selecting certain rows from a data.frame
Hi,
First of all - thank you for the answers regarding shared library. If i
am attempting to translate the library from Linux to Windows - i
think i will need some heavy baby-sitting ;-))) It is way out of my
league - for now.
Meanwhile i have this new question: suppose i have a data.frame
with x and y columns and 10 rows, 1 to 10. I also have a variable m
(or an array if you like) with 5
2007 Apr 10
2
Kmeans cluster analysis
Hello,
I have a data-set containing 22 variables, after appropriate transformations etc I ran a kmeans cluster analysis for 4 clusters , I ran it 20 times to find a result with the lowest within sum of squares.
My question is how best do I go about finding out what the characteristics are of each cluster?
Is one cluster dominated by a particular set of variables or by a particular
2004 May 14
1
log Y scales for parplot
Hi,
I am doing a barplot, and the fist bar is very big (high values) and
the rest of the bars are quite small (small values). So - is there any
way to make the Y scale logarithmic so that i have a wider
distance from 0 to 50 for example than for 50 to 100, and so on?
Thanks in advance for any help,
Monica
2004 Apr 21
1
Does R runs on IRIX 6.5 platforms?
Hi,
I am trying to do a bayesian modelling and my Windows PC
seems not to have enough memory to do it. So now i would like to
run GeoR on an IRIX 6.5 platform (UNIX related as i understood).
Do you know if R is compatible with this type of platform? I am not
allowed to try it until i have an answer to that.
Thank you so much,
Monica
2004 Jun 03
1
ecdf plots, lines, and y values
Hi,
I have a question for the group, perhaps someone can help me
figure this out. I've already looked in the help files and they were
no help to me.
I have a vector of values and I am plotting an ecdf graph.
1. How can i draw a continuous line through the ecdf points? (lines
and type for the plot with an ecdf object does not work)
2. Supposing I have this line drawn. I can add a
2004 Mar 09
1
Error message - what does it mean???
Hi,
I am trying to calculate mahalanobis distances for a matrix x with
n*p variables. I am getting the following error:
md2 <- mahalanobis(x, center, cov)
Error in solve.default(cov, tol = tol.inv) :
system is computationally singular: reciprocal condition
number = 2.11165e-009
What does it means?
Thank you so much for any help,
Monica
2004 May 17
1
basics: how do you sort a table?
Hi,
This may be a very basic question but it seems i cannot figure it
out does not matter what.
how do you sort a table (ascending or descending) after the values
in one particular column? I want to do something like the sort
function in Xcel.
Also, is there any other plot function that accepts log for y axes
like the parplot2() from gregmisc? Thanks for the tip Marc about
barplot2. very
2012 Jul 05
2
skipped correlation
hello,Everyone!
I am a freshman to use R. Can anybody tell me where has scor function which achieves the skipped correlation?
Thank you very much!
Bset wishes!
Jiaolong Qin
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