Displaying 20 results from an estimated 4000 matches similar to: "Count observation"
2009 Sep 18
2
Sum according observation
Hi listers,
I have a simple doubt...
I need to manipulate the data base as:
var1 var2
7 0.1
7 0.1
8 0.12
10 0.15
12 0.18
20 0.31
I would like to aggregate the equal cases as var1 making the sum of var2...
I would get...
var1 var2
7 0.2
8 0.12
10 0.15
12 0.18
20 0.31
Thanks in advance,
Marcio
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2009 Jun 12
3
Order data frame
Hi listers,
I have a data frame with 5 variables... And I want reorder the data frame
according a specific variable X...
I checked the sort and order functions... In my case I think that the ORDER
function is applicable... But I did not understand at all... The idea is
simple... Data order by X...
I know that this is very simple... Anyways... How I would do that...
Thanks in advance,
Marcio
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2009 Aug 14
1
Simulation Function - Save results
Hi listers,
I am working on a simulation... But I am having some troubles...
Suppose I have a function A which produces two results (mean and
variance)...
Then I would like to simulate this function A with a function B many times
using the results from function A
For example:
#Function A
boot<-function(a,b,c){
mean_boot<-(a+b)/2
var_boot<-c
#list(a=a,b=b,c=c)
return(a)
}
Then I would
2010 Sep 03
7
Function Gini or Ineq
Hi listers,
Does it necessary to install any package in order to use the GINI or INEQ
functions.
If I use the following command the R tells me that didn't find the GINI
function.
x<-c(541, 1463, 2445, 3438, 4437, 5401, 6392, 8304, 11904, 22261)
G<-gini(x)
Thanks in advance,
Marcio
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2010 Sep 14
4
If then else with command for
Hey listers,
I am trying to do something simple... Check the program below...
I would like to create a variable named COLOR according to the conditions
that I stablished... But the problem is that it seems that my variable COLOR
is checking just on sample, may be last in the loop... Certainly, I am
missing something...
Thanks in advance,
Marcio
2009 Mar 26
2
Data manipulation - multiplicate cases
Hi listers,
I am trying to arrange my data and I didn't find any information how to do
it!
I have a data with 3 variables: X Y Z
1-I would like to multiplicate de information of X according to the number I
have for my Y variable...
2-Then I want to identify with a dicotomic variable by the number according
my variable Z from X...
I can do the first part by...
z<-rep(x,y)
But I don't
2009 Feb 24
2
Transpose array
Hi Listers,
Is there a way that I can transpose an array...
Suppose I have the following array...
x<-array(c(1,2,3,4),dim=c(1,2,2))
, , 1
[,1] [,2]
[1,] 1 2
, , 2
[,1] [,2]
[1,] 3 4
And I would like to get the following result...
, , 1
[,1]
[1,] 1
[,2] 2
, , 2
[,1] [,2]
[1,] 3
[,2] 4
Thanks in advance,
Marcio
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2010 Sep 13
2
Condition %in%
Hi listers,
If I would like to check if a variable contains certain value, I would
write:
if (10 %in% x)
And If I would like to check the opposite, that 10 is not into x. How would
be?
Thanks in advance,
Marcio
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2009 Nov 24
4
Graphic Device - View/get all graphics
Hi Listers,
I am producing some graphics that the commands are in a FUNCTION...
The problem is that I end up viewing just last graphic and in my FUNCTION
there are 4 graphics with the PAR command function... Like those below...
How do I view/get the other 3 graphics? Any help?
Thanks in advance...
histogram<-par(mfrow=c(1,2))
hist(rw_mean_app,main='Bootstrap Method
2010 Feb 25
1
read.table (trying one more time)
Hey listers,
I've posted this doubt other day... But I am still having a hard time...
I have a MAC and I am not getting how to use the read.table command...
At the bottom of the FINDER application I have the following path:
Macintosh HD>Usu?rios>User>Marcio>UdeM>Travail Dirig?>Data>MU284
Population.txt
I didn't find out how I could copy and paste this path as it is
2009 Mar 31
1
Package candisc
Hi listers,
I am working on an canonical discriminant analysis, but I am having some
trouble to use the CANDISC function... I just installed the last R version
and installed the package CANDISC... But, I am getting the following message
because about a permission:
The downloaded packages are in
C:\Users\Marcio\AppData\Local\Temp\Rtmpz2kFUm\downloaded_packages
updating HTML package descriptions
2009 Aug 18
1
Simulation function
Hi listers,
I've been looking for a procedure, but I am not succeding...
I have a function that give multiple results...
Then, I would like to simulate this function n times, so I need to save/keep
the n multiple results, in order to calculate my desired statistics...
I have already tried with the RETURN and LIST FUNCTION, but I am not getting
it right...
An example of what I am looking for
2010 Sep 20
1
Size of the legend
Hello,
Which would be the command to change the size of the legend.
I checked at the help and I found out something about TEXT.WIDTH, but I am
not sure if is what I want.
Any help!
Thanks in advance,
Marcio
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2009 Apr 01
2
Matrix multiplication - code problem
Hi listers,
I am having some trouble in a matrix multiplication...
I have already checked some posts, but I didn't find my problem...
I have the following code...
But I am not getting the right multiplication...
I checked the dimension and they are fine...
id_y <- array(1:10,dim=c(2,1,5))
id_yt<-aperm(id_y,c(2,1,3))
m_id<-array(dim=c(dim(id_y)[1],dim(id_y)[1],dim(id_y)[3]))
for (i in
2010 Aug 11
1
Graphic Dispersion - Colored Points
Hey folks,
I have a graphic of dispersion...
I would like to color some specific points (x,y) according to another
indicator variable, for example:
x<-rnorm(5)
y<-rnorm(5)
ind<-(1,0,0,1,0)
plot(x,y)
Any suggestion, thanks...
Marcio
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2009 Sep 27
2
Count number of zeros in a collumn
I have a matrix 700x2000 which is sampled in each cycle from another matrix
788x2000 with the numbers 0,1 and 9
There is one specific collumn of this matrix, dart[,1977], that usually,
after the samplimg procedure has only 1 and 9 (because the zero frequency in
this collumn is low).
However, when this happens, I want to include an IF conditional in my code.
so basically what i wanted to do was to
2009 Oct 28
3
variable labels to accompany data.frame
Often it is useful to keep a "codebook" to document the contents of a dataset. (By "dataset" I mean
a rectangular structure such as a dataframe.)
The codebook has as many rows as the dataset has columns (variables, fields). The columns (fields)
of the codebook may include:
? variable name
? type (character, factor, integer, etc)
? variable label
2011 Apr 13
2
Dump the "source code" of data frame
Dear R experts,
I remember a similar function existed and have been mentioned in
R-help before. I tried my best to search but I really can't find it
out.
suppose I have an data frame like this:
> somedata <- data.frame(age.min = 1, age.max = 1.5, male = TRUE, l = -1.013, m=16.133, s=0.07656)
In order to back up the data and I don't want to use write.table(), I
would like to back
2010 Feb 16
1
READ.TABLE for Mac
Mestat wrote:
>
> Hi listers,
> I just got a MAC, so I am trying to use the command READ.TABLE but I am
> getting a error that is probably caused by the wrong path that I am
> using...
> The command is the following...
>
> file<-read.table("/Users/M?rcio/UdeM/Travail Dirig?/Data/MU284
> Population.txt",header=T,skip=24)
>
> And I am getting the
2005 Mar 16
1
Note: "The default device has been opened to honour attempt to modify trellis settings"
R-help,
I'm using a function whose end result is a trellis plot.
When I call the function I get sometimes the following message:
"Note: The default device has been opened to honour attempt to modify
trellis settings "
leading up to any plot whatsoever.
I call the package 'lattice' within the function and 'detach' after
plotting.
I have to close the graphics