Displaying 20 results from an estimated 1000 matches similar to: "create many variables at one time~"
2013 Jul 17
2
error message in gev
Hi r-users,
I would like to use gev and my data (annual rainfall ) is as follows:
> head(dat,20) A B C D E F G H I J
1 45.1 41.5 58.5 50.1 46.0 49.1 37.7 49.1 59.8 54.0
2 50.3 39.8 49.4 56.4 49.4 48.8 42.1 49.8 49.4 58.3
3 41.7 39.3 44.6 39.1 35.7 41.5 40.8 40.8 38.5 45.6
4 50.7 33.9 48.4 28.2 35.5 39.1 61.4 17.0 30.7 38.3
5 39.3 30.6 46.9 23.8 25.8
2013 Jan 03
2
Sas by function in R
Hello,
It's an alternative to use SAS by function in R?
I want to plot d histograms by plot.from example bellow:
Thank you!
plot d
1 1 16.3
2 1 25.0
3 1 57.8
4 1 17.0
5 2 10.8
13 2 96.4
17 3 76.0
18 3 32.0
19 3 11.0
20 3 11.0
24 3 106.0
25 3 12.5
21 4 19.3
22 4 12.0
26 4 15.0
27 5 99.3
32 7 11.0
36
2010 Sep 14
3
how to compute when row length is different
hi guys..please help me with this
i am working on two data frames
one goes like this:
DF1
Sample_id RepairHours Denatured Dose ZeroMean FourtyFiveMean NinetyMean
1 SDM071 0 1 B 60.5 19.0 45.0
2 SDM071 1 1 B 46.0 23.0 42.5
3 SDM071 2 1 B 52.5 24.0 40.0
4 SDM071
2012 Jul 06
4
differences between survival models between STATA and R
Dear Community,
I have been using two types of survival programs to analyse a data set.
The first one is an R function called aftreg. The second one an STATA
function called streg.
Both of them include the same analyisis with a weibull distribution. Yet,
results are very different.
Shouldn't the results be the same?
Kind regards,
J
--
View this message in context:
2010 Sep 20
2
invalid 'row.names' length error when running scatterplots or plot in R Commander
Hello,
I teach statistics and use R Commander for teaching. I have 2 students
out of 169 that can't get scatterplots or plot to work. I have had them
update packages, restart R/R Commander/their computers and even
reinstall R/R Commander. One is using Windows 7 on a new pc and the
other is a pc user (not sure the OS). They are both using R2.11.1 and R
Commander 1.6-0.
The data look like
2012 Oct 18
1
Temperature on Poweredge 2850
I am trying to get the temperature of a Poweredge 2850 with CentOS 6.3
on it. Has anybody on this list done this successfully? Thanks
-Surya
PS: Apologies for cross posting if you are on the Poweredge list.
--
Surya Saha
Department of Plant Pathology
and Plant-Microbe Biology
Cornell University, NY, USA
http://www.linkedin.com/in/suryasaha
2006 Mar 02
1
Curious subsetting behavior
I have a simple vector, called tmp that I want to subset based on another
vector called vec. Everything works as expected except for below where the
subsetting returns something other than the original data. Any ideas?
> vec <- c(1,2,3,4,5,59,60,27,32,21)
> tmp
[1] 1.0 1.1 2.0 2.1 2.2 3.0 3.1 4.0 5.0 5.1 6.0 7.0 8.0 8.1
9.0
[16] 9.1 9.2 10.0 10.1 11.0 12.0 13.0 14.0
2008 Nov 05
2
date translate in R from SAS
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2009 Mar 04
5
how to create many variables at one time?
Hi:
I need to create many variables at one time,how to do this in R?
for eg ,X1,X2.......X100?
Thanks~
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2017 Oct 26
2
Help needed with aggregate or other solution
Hello all!
I've been struggling with is for many hours today; I'm close to getting
what I want, but not close enough...
I have a dataframe consisting of two date-time columns followed by two
numeric columns. what I need is the max value (in the first numeric column)
based on the 2nd date-time column, which is essentially a factor. But, I
want the result to provide both date-time values
2017 Oct 26
3
Help needed with aggregate or other solution
Hi Jeff,
Thank you for the suggestions -- I appreciate your help. Unfortunately, the
result2 has two problems...
(1) there are now 3 date columns (it looks like 2 cols are merged into 1
col)
(2) the output rows should not have any of the basistime dates repeated
(maybe I misstated the problem); I need the max fcst value by basistime,
but also list the date value for that row; for example:
2013 Jun 12
1
Question on Simple Repeated Loops
Dear R-User,
Appreciate any helps. It looks simple, but I don't have a clue.
Given that I have a dataframe of tree population with three variables:
sp=species ,
d0=initial_size
grow=growth increment from initial size per year
How can I calculate the future growth increment of each tree for the next 3 years.
The following Rscript was written,
#----------
a0 <-
2012 Nov 14
2
aggrete data from combination
Dear R users,
A have a dataframe (matrix) with two collumns (plot, and diameter (d)). I
want all diameters values for different combination of plots.
For example I want all d values for all posible combination, 100C2 (all d
values for plot 1 with all d values in the plot 2.......with all d values
from plot 1 with all d values from plot 100, ...... with all d values from
plot 99 with all d values
2010 May 27
3
How to combine data columns to a single column
Dear users,
I have several columns of data (each column containing monthly data for a
particular year from january - december) . I would wish to combine the
columns to get a Single column of continuous data as shown in (b) below. I
have read this data as table in R
(a) Data example
Year 1903 1904 1905 1906 Jan 125.0 30.0 113.0 5.0 Feb
128.0 100.0 70.0 388.0
2008 Jun 04
2
linear model in the repeated data type~
here is the data:
y<-c(5,2,3,7,9,0,1,4,5)
id<-c(1,1,6,6,7,8,15,15,19)
t<-c(50,56,50,56,50,50,50,60,50)
table1<-data.frame(y,id,t)//longitudinal data
what I want to do is to use the linear model for each id ,then get the
estimate value,like:
fit1<-lm(y~t,data=table1,subset=(id==1))
but ,you can see the variable "id" is quite irregular,they are not arranaged
in order
2008 Jun 19
1
try to find the MLE of a function
Hi everyone:
I have a density function f(x|theta)=theta*x^(theta-1),where
0<x<1,0<theta<infinite
I want to pratice on R to find the MLE of this function,here is my code:
x <- (0:10)/10
f<-function(theta) prod(theta*x^(theta-1))
mle(f)
and r gave me :Error in eval(expr, envir, enclos) : argument is missing,
with no default
what mistake I just made?and how to add a
2017 Oct 26
0
Help needed with aggregate or other solution
Thanks for the dput...
#### reproducible example of split-apply-combine ###
dta <- structure(list(date = structure(c(1L, 2L, 3L, 4L, 5L, 6L, 7L,
8L, 9L, 10L, 11L, 12L, 13L, 14L, 15L, 16L, 17L, 18L, 19L, 20L,
5L, 6L, 7L, 8L, 9L, 10L, 11L, 12L, 13L, 14L, 15L, 16L, 17L, 18L,
19L, 20L, 21L, 22L, 23L, 24L, 7L, 8L, 9L, 10L, 11L, 12L, 13L,
14L, 15L, 16L), .Label = c("2012-01-25 18:00:00",
2017 Oct 26
0
Help needed with aggregate or other solution
On Thu, 26 Oct 2017, Thomas Adams wrote:
> Hi Jeff,
>
> Thank you for the suggestions -- I appreciate your help. Unfortunately, the
> result2 has two problems...
>
> (1) there are now 3 date columns (it looks like 2 cols are merged into 1
> col)
No, there are two date columns. Result2 includes the grouping value as a
row name (pulled from the names of the dta2list items
2008 Jan 21
3
'matrix' returns integer instead of decimal
R-helpers:
I am experiencing some odd behavior with the 'matrix' function that I have
not experienced before and was wondering if there is something that I was
missing in my code.
---------------------------------
> sessionInfo()
R version 2.6.1 (2007-11-26)
i386-pc-mingw32
locale:
LC_COLLATE=English_United States.1252;LC_CTYPE=English_United
States.1252;LC_MONETARY=English_United
2008 Jun 18
3
multiple multiplication in R
hi: just a very simple quesion,how to do multiple multiplication in R
x<-c(1,2,3,4,5,6)
how to get 1*2*3*4*5*6?
I checked the Arithmetic Operators in R,but did not found the operators
for this function,anyway can do this except the loop?
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