Displaying 20 results from an estimated 1000 matches similar to: "Merging and sorting multiple data.frame"
2003 Jul 15
3
clearing some part of a graph
Hi R lovers
2 questions:
1) I'd like to know how to clean the title, the sub title or the labels of
a graph. I know how to redefine it with the function title() but it
overwrites the previous title and do not replace it
2) How could I clear a whole plot (for example in a multiple figure
environment)
thanks for your help
vincent
2003 Jul 03
4
Generating a vector for breaks in a histogram
Hi
I have two lots of numbers which I would like to histogram using the hist() function. For comparative reasons, I want them to be on the same scale, which I can use the xlim and ylim options to achieve.
However, having them on the same scale is meaningless unless they have the same "breaks". Consulting the documentation, there are 4 ways of defining the number of breaks, only one
2003 Jul 21
3
Confidence Band for empirical distribution function
Hi,
I was trying to draw an empirical distribution function with uniform
confidence bands. So I tried to find a way to calculate values of the
Kolmogorov-Smirnov Distribution but failed.
I guess it must be hidden somewhere (since the ks-test is implemented),
but I was unable to find it.
Is there any way to do this?
Thanks
Leif Boysen
2003 May 08
3
R crashes with package SJava; was Memory leakage?
Dear all,
Maybe this has something to do with R crashing?
When my R version crashes, there is Rgui.exe still
running in the background (i.e. W2K's task manager
recognises it only as a process, which apparently
is using almost 100% of the CPU).
I can reproduce that by "using" the SJava package
(from Brian Ripley's homepage, as suggested on
http://www.omegahat.org/RSJava/).
2003 Jun 06
1
layout problem
Hello,
I have a question about using the layout command within a function. I've
written function that uses layout to create a figure from 2 plots. This
works fine to create a figure. When I use par(mfrow = c(2,2)) to create multiple
plots, it seems that the layout command resets the mfrow parmeter.
Is there a way for me to avoid this problem?
For example
practice<- function() {
2003 Jun 23
1
Smooth of a temporal serie
Hello all,
I'm a new member in this list and, also, a new R user and need some
information about Resistant Smooth (using medians).
The method I need of Resistant Smooth is the 4253H one and I didn't found
how to perform that in R.
Does anybody have an idea?
Thanks,
Henrique.
2003 Aug 12
3
Sorting a dataframe
Undoubtedly a simple question:
I've looked at order() and sort() in the help pages for
R1.7.1. It doesn't appear that these functions are immediately
suited to doing the same thing as
PROC SORT DATA = BLAH;
BY X Y Z;
RUN;
in SAS. I have also checked Frank Harrell's Hmisc library.
Could someone point me in the right direction so I can sort
by the levels of Z within the levels of
2003 Jun 05
6
dynamics of functions
Dear list,
I would like to study the dynamics of
functions using R (instead of mathematica e.g.),
i.e. the behavior of points under iteration
of a function.
So I tried (in vain) writing a function
myfunction <- function(f,n,x){...}
in order to compute f^{n}(x), f^{n}(x) being
the function f composed with itself n-1 times.
n is a natural number, and the argument x is
the abscissa of the point I
2003 Aug 20
2
grid Graphics by Paul Murrell
Dear All,
I've been trying to format a plot output using par() with mfrow, fin,
mai, etc and basically it's proving to be a pain. I searched on google
and found that Paul Murrell had written a grid Graphics program which
seems perfect. However, when I try and use say viewport() I just get a
function not found error. Can someone tell me what I'm doing wrong please?
Thank-you
2003 Aug 27
2
Basic GLM: residuals definition
Dear R Users,
I suppose this is a school boy question, but here it is anyway. I'm trying to re-create the residuals for a poisson GLM with simulated data;
x<-rpois(1000,5)
model<-glm(x~1,poisson)
my.resids<-(log(x)- summary(model)$coefficients[1])
plot(my.resids,residuals(model))
This shows that my calculated residuals (my.resids) are not the same as residuals(model).
p 65 of
2003 Jun 24
2
R and Latex's tables
Hi R lovers!
I have discovered recently that graph can be exported from R in a Latex
compatible file
thanks to the pictex command
I would like to know if there is the equivalent while exporting datas.
Let's say I have a matrix, a data.frame or a list that I would like to
export as a flat text file that is immediatly transcripted into a table
into latex
Is there a macro or package that could
2003 Jun 23
3
?plot problem
R1.7.0, Win2k:
When I use plot( ) on a groupedData object,
if I have 165 subjects I'm supposed to be able
to use plot(..., layout = c(5,3,11)) to get
all 165 on 11 separate sheets. The graphics
window is only displaying the first 10. If I
use plot(..., layout = c(5,3,12)) I get the
appropriate 11 sheets.
Furthermore, yesterday I noticed that when using
plot( <linear model object> )
2003 Sep 03
3
plotting a distribution curves
Hi,
is there a way to plot distribution curves (say normal or chi sq etc)
from within R?
For example I looked up the *chisq family of functions but I'm not sure
as to how I would use them to generate a plot of the chi sq distribution
(for arbitrary d.o.f).
Thanks,
-------------------------------------------------------------------
Rajarshi Guha <rajarshi at presidency.com>
2003 Aug 27
5
selecting by variable
Hi,
I'm a recent R convert so I haven't quite figured out
the details yet...
How do I select one variable by another one? Ie if I
want to draw the histogram of variable X only for
those individuals that also have a value Y in a
certain range?
In STATA I would give something like:
histogram X if ((Y>=A & Y<=B))
(The data is for individuals and each individual has a
number of
2003 Jul 24
2
median and joint distribution
Dear R-"helpers"!
May I kindly ask the pure statistics-experts to help me for a
purpose which first part is not directly concerned with R.
Consider two distribution functions, say f and g. For both, the
median is smaller than a half. Now, the multiplicative or additive
linkage of both distribution leads to a new distribution function,
say h, whereas the median of h is greater than a
2003 Jul 15
3
Plotting a graph of many lines between groups of points...
I have a data file read into a data frame.
For example,
V1 V2 V3 V4
1 1 1 3 4
2 2 3 5 10
. . . . .
. . . . .
n V1[n] V2[n] V3[n] V4[n]
to n=many thousand
I want to plot a graph with many line segments, where v1[i]=x1, v2[i]=y1,
v3[i]=x2, v4[i]=y2 for i=1,n.
This seems relatively simple in theory but I've spent quite a bit of time
trying to make it happen with
2003 Jun 05
4
counting missing values
Hello R lovers
I have written a little cute function to count the number of missing value
per row in a matrix and return the percentage of missing value
it takes a lot of time to run with a 1000 rows matrix
I'd like to know if there is a function already implemented to count the
number of occurence of a given values in a vector
For information,
here is the function
count<-0
for (i in
2003 Jul 08
3
Characters and Numeric Values in One Matrix
Dear R-Users,
I want to ask a question for a colleague of mine. He wants to put a
character vector and a numeric vector into one matrix and still have the old
character and numeric type for the respective columns.
Unfortunately, I am just starting using R and I could not help him.
Is there an easy and straightforward way to do this in R?
Maybe a little example facilitates understanding our
2003 Jul 18
4
R won't connect to the internet
Hi
I can't get R to connect to the internet. I am running R 1.7.1 on Windows XP and whenever I try to download packages etc from within R using the internet, it fails.
OK so I am behind a firewall and use a proxy server....
SO, if I go to my MS-DOS prompt and type:
RGui.exe --internet2
everything works....
BUT i can't set up a shortcut for this as Windows (I hate Windows) complains
2003 Aug 13
6
placing labels in polygon center ?
Dear all,
is there any function to calculate the center of a polygon mass in R?
Actually I need to find the best location within polygons to place labels.
Thanks for any hint
Jens Oehlschl?gel
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