Displaying 20 results from an estimated 200 matches similar to: "Help on variable ranking"
2010 Oct 28
2
Please help me about Monte Carlo Permutation
> Dear R experts,
>I am sorry for my inability.
>I have the following dataset:
> Qtot Itot
>1 73 684
>2 64 451
>3 71 378
>4 65 284
>5 47 179
>6 31 117
>7 19 69
>
>Now I need to perform Monte Carlo Pertutation test underlaying the
following condition.
>
>
>Condition
>
>In order to choose randomly (5000 times) for the Qtot
2007 Oct 26
1
Fwd: Ajuda em R
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2011 May 31
1
Problem with % in an example when running R CMD check
Using
platform x86_64-pc-linux-gnu
arch x86_64
os linux-gnu
system x86_64, linux-gnu
status
major 2
minor 13.0
year 2011
month 04
2011 Jan 20
4
Asterisk to asterisk t.38
I have a setup of asterisk 1.6 in one box and asteirsk 1.4 in another. I
can send recieve faxes from both boxes fine to and from pstn. But the
faxing between 1.6 and 1.4 extensions does fail. Any ideas please ?
--
Thank You
Amit Nepal
2012 Aug 20
2
(no subject)
Dear R Users! I'm new in R! I've got a data.frame. For example:a<-data.frame(cbind( 0:1, 1:10)) X1 X2
1 0 1
2 1 2
3 0 3
4 1 4
5 0 5
6 1 6
7 0 7
8 1 8
9 0 9
10 1 10 Firstly i want to create combinations from X2, for example:combn(a$X2,2) It's ok, butsecondly I would like to get combinations from those X2 numbers only , where X1= 0. Could
2009 Oct 26
3
Sandard deviation calculation
Dear all
I am trying to learn R
I was trying to calculate standard deviation
here are the commands and outputs in R
> sd(Ht_cm[type=='SD'])[1] 3.283605> sd(Ht_cm[from_treeline=='above'])[1] 16.83289> sd(Ht_cm[type=='SD'][from_treeline=='above'])[1] NA>
the problem is that, i could not understand why the third command could not give any result.
2013 Apr 19
5
how to subtotal by rows
Dear R-users,
I have a dataset as like below, and I want to subtotal the values of rice,wheat and maize by year for each fid.
fid year rice wheat maize
------------------------------------------------
1 1995 5 NA NA
1 1995 NA 3 NA
1 1995 NA NA 2
1 1996 4 NA NA
1
2009 Oct 28
2
x11(title=' ')
Dear all
I was trying to put a title for my plot, but i got this result,
> x11(width=10,height=5,title="seedling");par(mfrow=c(1,2))Error in x11(width = 10, height = 5, title = "seedling") : unused argument(s) (title = "seedling")>
The title is not taking
How can i give a title for the plot (where in need to make 2 plots within a window of x11() )
thanking
2005 Mar 23
10
Broadvoice alternatives
Dear all,
I have tried a lot of things to make broadvoice work with asterisk , but I
failed each time.
Please suggest a good service providers that I can use with asterisk for
outbound and inbound calls.
--
With regards,
Vicky Shrestha
System Director
WorldLink Communications
Jawalakhel , Kathmandu, Nepal
2013 Apr 20
2
creating dummy variables
Hello R-users,
The below is a snippet of my data:
fid crop year value
5_1_1 SWHE 1995 171
5_1_1 SWHE 1997 696
5_1_1 BARL 1996 114
5_1_1 BARL 1997 344
5_2_2 SWHE 1995 120
5_2_2 SWHE 1996 511
5_2_2 BARL 1996 239
5_2_2 BARL 1997 349
Here, I want to create dummy variables with the names of the content of a column 'crop' in a way
2009 Aug 02
1
Inaccurate complex arithmetic of R (Matlab is accurate)
Dear All,
Hans Borchers and I have been trying to compute "exact" derivatives in R using the idea of complex-step derivatives that Hans has proposed. This is a really, really cool idea. It gives "exact" derivatives with only a minimal effort (same as that involved in computing first-order forward-difference derivative).
Unfortunately, we cannot implement this in R as the
2013 Jun 27
2
Date.weekend?
Hello,
Having a boolean *.weekend?* on the Date class would be a good feature. It
will basically do this:
saturday? || sunday?
Makes the code cleaner and easier to read.
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2011 Apr 12
2
Model formula for ols function (rms package)
Dear R help,
I'm having some trouble with model formulas for the ols function in
the rms package. I want to have two variables represented as
restricted cubic splines, and also include an interaction as a product
of linear terms, but I get an error message.
library(rms)
d <- data.frame(x1 = rnorm(50), x2 = rnorm(50), y = rnorm(50))
ols(y ~ rcs(x1,3) + rcs(x2,3) + x1*x2, data=d)
Error in
2005 Oct 06
2
R/S-Plus equivalent to Genstat "predict": predictions over "averages" of covariates
Hi all
I'm doing some things with a colleague comparing different
sorts of models. My colleague has fitted a number of glms in
Genstat (which I have never used), while the glm I have
been using is only available for R.
He has a spreadsheet of fitted means from each of his models
obtained from using the Genstat "predict" function. For
example, suppose we fit the model of the type
2003 Jul 22
1
Asking for help
Sirs,
I am a newbe jumping to advance routing and traffic control. I work for
one of the leading isp in kingdom of Nepal. My goal is to do bandwidth
management for our lease line customer so that they could use their
allocated bandwidth only. Bgp and ospf is implemented as a routing
protocol. All routers are cisco routers. There are about 16 routers some
are with highly danced ports. No Linux box
2003 Nov 21
1
callerid problem...zaptel ppl
hi,
i am having callerid problems with *. i have the
callerid from my telco and it shows up in my normal
phone when i connect it directly to the line but if i
connect the same phone thru * server the callerid is
not shown. i am using X101p and tdm400p. i have
everything defined in my zapata.conf well and fine. i
finally came to conclusion that this might have
happened due to the registration of
2009 Oct 26
1
defining number of samples
dear all
i am trying to perform t-test (t.test) in R
here i am putting the commands and answer i got
> t.test(Ht_cm[from_treeline=='above'][type=='SD'],Ht_cm[from_treeline=='below'][type=='SD'])
Welch Two Sample t-test
data: Ht_cm[from_treeline == "above"][type == "SD"] and Ht_cm[from_treeline == "below"][type ==
2011 Dec 19
1
pls help to print out first row of terms(model) output in example program
Greetings.
I've written a convenience function for multicollinearity diagnosis.
I'd like to report to the user the formula that is used in a
regression. I get output like this:
> mcDiagnose(m1)
[1] "The following auxiliary models are being estimated and returned in a list:"
[1] "`x1` ~ ."
formula(fmla)()
[1] "`x2` ~ ."
I'd like to fill in the period
2013 Nov 28
2
Find the prediction or the fitted values for an lm model
Hi,
I would like to fit my data with a 4th order polynomial. Now I have only
5 data point, I should have a polynomial that exactly pass the five point
Then I would like to compute the "fitted" or "predict" value with a
relatively large x dataset. How can I do it?
BTW, I thought the model "prodfn" should pass by (0,0), but I just
wonder why the const is
2007 Apr 19
2
erratic behavior of match()?
Consider the code:
x <- seq(0,1,0.2)
y <- seq(0,1,0.01)
cbind(match(y,x),y)
which, surprisingly, doesn't show a match at 0.6! (It gives correct
matches at 0, 0.2, 0.4, 0.8 and 1, though)
In addition,
x[4]==y[61]
yields FALSE. (but x[5]==y[81], the one for 0.8, yields TRUE)
Is this a consequence of machine error or something else?
Could this be overcome? (It works correctly when