ess '-1' is
included. You may need to adjust your interpretation of A:B and A:B -1
in these cases.
> dim(my_subset(model.matrix(Y ~ A:B - 1,fr)))
[1] 12 12
> dim(my_subset(model.matrix(Y ~ A:B,fr)))
[1] 12 13
> Note that you'll get quite different results if A and/or B are not f
r than a mailing list:
>
> http://lmgtfy.com/?q=non-parametric+anova+R
>
> or
>
> http://www.justfuckinggoogleit.com/search.pl?query=non+parametric+anova+R
>
> Jeremy
>
>
> On 5 March 2010 05:19, blue sky wrote:
>> My interpretation of the relation between 1-way A
On Fri, Mar 5, 2010 at 9:42 AM, David Winsemius wrote:
>
> On Mar 5, 2010, at 10:34 AM, Matthias Gondan wrote:
>
>>> This is your first of three postings in the last hour and they are all in
>>> a category that could well be described as requests for tutoring in basic
>>> statistical topics. I am
:
> The way to understand this is to look at the output of model.matrix:
>
> model.matrix(fo, fr)
>
> for each formula you tried. If your data is large you will have to
> use a subset not to be overwhelmed with output.
>
> On Fri, Mar 5, 2010 at 9:08 AM, blue sky wrote
Suppose, 'fr' is data.frame with columns 'Y', 'A' and 'B'. 'A' has levels 'Aa'
'Ab' and 'Ac', and 'B' has levels 'Ba', 'Bb', 'Bc' and 'Bd'. 'Y'
columns are numbers.
I tried the following three sets of commands. I understand that A*B is
equivalent to A+B+A:B. However, A:B in A+B+A:B is different fr
I have contacted the author of the contrast package, but received no
reply. Could somebody that I have the experience on this package give
me some hint.
In the vignette of the package, I only see example to compute
contrasts between 2 cells. Is there a way to compute the contrast
between more than
My interpretation of the relation between 1-way ANOVA and Wilcoxon's
test (wilcox.test() in R) is the following.
1-way ANOVA is to test if two or multiple distributions are the same,
assuming all the distributions are normal and have equal variances.
Wilcoxon's test is to test two distributions ar
I don't find rbind, cbind or other bind that bind in other dimesions
for multidimension array while keeping the result of the same
dimension.
For example, say, dim(x)=c(2,3,4), dim(y)=c(3,3,4). I want to have the
result z, where dim(z)=c(2+3,3,4), when I bind x and y in the first
dimenion. The bin
On Sat, Feb 20, 2010 at 2:40 AM, Romain Francois
wrote:
> On 02/19/2010 10:31 PM, William Dunlap wrote:
>>
>>> -Original Message-
>>> From: r-help-boun...@r-project.org
>>> [mailto:r-help-boun...@r-project.org] On Behalf Of blue sky
>>> Se
On Fri, Feb 19, 2010 at 12:39 PM, Peter Dalgaard
wrote:
> blue sky wrote:
>>
>> I made the following example to see what are the difference between
>> expression and quote. But I don't see any difference when they are
>> used with eval()? Could somebody le
I made the following example to see what are the difference between
expression and quote. But I don't see any difference when they are
used with eval()? Could somebody let me know what the difference is
between expression and quote?
expr=expression(2*3)
quo=quote(2*3)
eval(expr)
str(expr)
class(
x=list(a=1,b=NULL)
is.null(x$b)
is.null(x$c)
Both the above two commands give me TRUE, but in the first one, b is
NULL, in the second one, c doesn't exist. Are there functions that can
help me distinguish the two different nulls?
__
R-help@r-project.org
I don't find print.list. Could somebody let me know which method is
called when I run command print(a_list), where a_list is a list? Is
'print.default' used for printing a list?
__
R-help@r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r
> x=3
> `class<-`(x,'something')#this command prints
[1] 3
attr(,"class")
[1] "something"
> x=3
> class(x)='something'#this command doesn't print anything
The first of the above two commands print the content of 'x' but the
second doesn't, although both of them set the argument 'x'. I'm
wondering
S Programming by Venables and Ripley (page 78) has the example listed
at the end of this email. However, I get the following error when I
try the example. I don't understand the descriptions of NextMethod on
its help page. Could somebody let me know how to fix the error of this
example?
> test(x)
On Fri, Feb 12, 2010 at 11:41 PM, blue sky wrote:
> On Fri, Feb 12, 2010 at 6:11 PM, Don MacQueen wrote:
>> Well, you still will need Sys.getenv() to get the value of the environment
>> variable into R.
>>
>> Are you familiar with the function named list.files()
On Fri, Feb 12, 2010 at 6:11 PM, Don MacQueen wrote:
> Well, you still will need Sys.getenv() to get the value of the environment
> variable into R.
>
> Are you familiar with the function named list.files() ?
>
> This may do the job:
>
> source( list.files( Sys.getenv('SOMEENVVAR'), pattern='myf
useful if I want to make such a
function myself. But my question was to look for a better version of
source().
Are you clear about my question now?
> -Original Message-
> From: r-help-boun...@r-project.org [mailto:r-help-boun...@r-project.org] On
> Behalf Of blue sky
> Sent: Fr
Suppose some environment variable (say MY_R_INC) has a number of
paths. I want to source some file relative to some path in $MY_R_INC
(just as #include in C++ does, which looks for header file in a number
of directories). I RSiteSearch'ed, but I don't find any function that
satisfies my need. Could
?'`' shows the following:
"Single and double quotes delimit character constants. They can be
used interchangeably but double quotes are *preferred* (and character
constants are printed using double quotes), so single quotes are
normally only used to delimit character constants containing double
qu
On Fri, Feb 12, 2010 at 1:36 PM, Sharpie wrote:
>
>
> blue sky wrote:
>>
>> x=10
>> f=function() {print('in f')}
>> g=function() {f(); print(x)}
>> g()
>>
>> Suppose I have the above code, I want to know what functions and
>> var
On Fri, Feb 12, 2010 at 1:38 AM, Sharpie wrote:
>
>
> djhurio wrote:
>>
>> I believe there is not such thing as source code for a variable. I believe
>> if you define x=y*y, x is keeping only the values of y*y, but not how they
>> were computed. Am I right?
>>
>
> In general yes. Basic variables
x=10
f=function() {print('in f')}
g=function() {f(); print(x)}
g()
Suppose I have the above code, I want to know what functions and
variables have been used in the function g (in this case, f and x). Is
there a function to do so?
__
R-help@r-project.org
'get' can give me the source code for a function. Is there a way to
get the source code for a variable? In the following example, the
source code for x is 'y*y'. Is there a way to get it using the string
'x'?
> f=function(){print('xx')}
> get('f')
function(){print('xx')}
> y=3
> x=y*y
> get('x')
> f=function(){ print('in f')}
> attr(f, 'source')
[1] "function(){ print('in f')}"
I have the above simple function. I can use the variable f to refer to
the function and get the function source.
Suppose that I have 'f' as a string (say I get it from ls()), could
somebody let me know how to get
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