Displaying 20 results from an estimated 7000 matches similar to: "Automate concatenation?"
2009 Jul 10
3
strange strsplit gsub problem 0 is this a bug or a string length limitation?
I was working with the rmetrics portfolioBacktesting function and dug into
the code to try to find why my formula with 113 items, i.e. A1 thru A113,
was being truncated and I only get 85 items, not 113.
Is it due to a string length limitation in R or is it a bug in the strsplit
or gsub functions, or in my string?
I'd very much appreciate any suggestions
============Input script:
2005 Jul 07
3
What method I should to use for these data?
Dear R user:
I am studying the allele data of two populations.
the following is the data:
a1 a2 a3 a4 a5 a6 a7 a8 a9
a10 a11 a12 a13 a14 a15 a16 a17
pop1 0.0217 0.0000 0.0109 0.0435 0.0435 0.0000 0.0109 0.0543
0.1739 0.0761 0.1413 0.1522 0.1087 0.0870 0.0435 0.0217 0.0109
pop2 0.0213 0.0213 0.0000 0.0000 0.0000 0.0426 0.1702 0.2128
0.1596 0.1809 0.0957 0.0745 0.0106
2009 Oct 19
1
Question about IMAP IDLE (and Palm Pre)
Hello,
i try to understand, how it works (IDLE).
Try to get it successfully work with my new Palm Pre ;-)
which looks like to have a lot issues wir imap... so i'll blame not dovecot
for the issues.
Sent a mail, from googlemail.
processed by dovecot ad 12:11.
what me now confusing, is, that there in the out-log is nothing visible,
I expected, to see there was sent an notification, there was
2008 Mar 25
2
Compare two data sets
I would like to compare two data sets saved as text files (example below) to determine if both sets are identical(or if dat2 is missing information that is included in dat1) and if they are not identical list what information is different between the two sets(ie output "a1", "a3" as the differing information). The overall purpose would be to remove "a1" and
2005 Oct 31
2
nlme error message
Dear Friends,
I am seeking for any help on an error message in lme
functions. I use mixed model to analyze a data with
compound symmetric correlation structure. But I get an
error message: "Error in corMatrix.corCompSymm(object) :
NA/NaN/Inf in foreign function call (arg 1)". If I change
the correlation structure to corAR1, then no error. I have
no clue how to solve this problem.
2011 Aug 25
4
{R} How to extract correctly from vector?
Dear list,
I have problem that I cannot solve and would like to ask your opinion. I
tried to ask a few days ago already but got no answer and all my attempts to
solve it by myself since then failed. Sorry for repeated posting! Here the
problem broken down a bit.
My problem basically is, that I want to use the elements of a character
vector as names for objects and by recalling only the
2005 Sep 20
2
script.aculo.us: pause before effect.appear
I''ve created a simple script (below) which calls the effect.appear script in
order to make a group of items appear at the page load. I would like to have
the images randomly appear at different times; e.g. the 3rd image might
start appearing 2 seconds after load, the 6th image immediately after load,
the first image 1 second after load, etc...
How can I achieve this affect?
---
2008 Jan 08
2
problem when extacting columns of a data frame in a new data frame
Dear R-users,
I would like to create a new data frame composed of 2 columns of another
data frame. But it does not give me what I want...
> casesCNST[1:10,]
case X1 X2 X3 X4 expected
1 A1 0 0 0 0 E
2 A2 0 0 0 1 C
3 A3 0 0 0 2 C
4 A4 0 0 0 3 C
5 A5 0 0 0 4 C
6 A6 0 0 1 0 C
7 A7 0 0 1 1 C
8
2008 Apr 09
1
vectorized way to combine levels of a factor
Hi Gurus:
If I have a large dataset of the form of:
> x <- data.frame(V1 = runif(10), V2 = sample(c('A','B','C'),10,T)) > x V1 V21 0.2691580 A2 0.8711267 B3 0.2674728 C4 0.3278876 A5 0.1809152 A6 0.2499651 C7 0.9155174 A8 0.8004974 B9 0.7885516 A10 0.9301630 A
And I want a V3 that =V2 if V2=A, and =D if V2=B or C. In other words I
2009 Oct 08
2
plotting a set of discrete distributions
I have the following data set, representing the the estimated number of
some event (est), when the actual number
was 3, 4, ..., 15. The numbers in the cells are the observed
*frequencies* of each combination of (actual, estimated),
so each column (a3 -- a15) gives a single discrete frequency
distribution. Thus, when the actual number was 6,
the estimated values were 5,6,7 with frequencies 7,
2006 Dec 31
7
zero random effect sizes with binomial lmer
I am fitting models to the responses to a questionnaire that has
seven yes/no questions (Item). For each combination of Subject and
Item, the variable Response is coded as 0 or 1.
I want to include random effects for both Subject and Item. While I
understand that the datasets are fairly small, and there are a lot of
invariant subjects, I do not understand something that is happening
2013 Feb 04
4
If() values in one dataframe then return values from another
I have a large data frame ("data1") that looks like:
A1 A2 A3 A4 A5 A6 A7 A8 A9 A10 A11 A12 A13 A14 A15 A16 A17 A18 A19 A20
[1,] 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0
[2,] 0 0 0 0 0 1 0 0 1 0 1 0 0 1 0 0 0 0 0 0
[3,] 1 1 0 1 1 1 1 1 1 1 1 0 1 1 0 0 0 0 0 0
[4,] 1 1 1 1
2012 Feb 16
2
how to rbind matrices from different loops
Dear R experts,
I am having difficulty using loops productively and would like to please
ask for advice. I have a dataframe of ids and groups. I would like to
break down the dataframe into groups, find the unique sets of ids, then
reassemble. My thought was to use a loop, but I have been unable to finish
this loop in a logical way. I would like to find the unique ids for group
1, group 2,
2019 Oct 25
3
register spilling and printing live variables
Hello,
I have studied register allocation in theoretical aspects and exploring the
same in the implementation level.
I need a minimal testcase for register spilling to analyze spilling
procedure in llvm. I tried with a testcase taking 20 variables but all the
20 variables are getting stored in the stack using %rbp. Maybe my live
variable analysis is wrong. Please help me with a minimal testcase
2003 Jul 21
1
Inconsistent handling of character NA?
[R 1.7.1 on Windows XP Pro]
Since R allows missing values for character variables, why
are NA's not propagated by character manipulation functions?
For example:
> temp <- c("a", NA)
> temp
[1] "a" NA
> is.na(temp)
[1] FALSE TRUE
> paste(temp[1], temp[2])
[1] "a NA"
> substr(temp, 1, 1)
[1] "a" "N"
>
2006 May 30
3
Time rather than dates?
Using strptime() and other functions for dates has been very helpful with
the kind of data I often work with. However, I haven't found out how time
as such should be specified. All my attempts result in time *and* date:
>treatment_time<-c("01:02:03","02:03:04") # hours:minutes:seconds
>time.2<-strptime(treatment_time,format="%H:%M:%S")
>time.2
[1]
2006 Mar 02
4
Skip last NA's?
I wonder if anyone could help me find an expression for skipping the last
missing values in a vector? The kind of material I have is something like
x<-c(23,12,NA,23,24,21,NA,NA,NA)
I would like to skip the last NA's, but not the ones in between other
vallues. Any hints? (Why not do this by simply take x[1:6]? I have several
vectors a couple of thousand observations long with varying
2006 May 30
4
Add text/numbers to x axis?
Is there any simple way to add text to the x axis in R? I have tried to
add simple characters in R without any greater sucess. As an example of
what I want to do is the added C in the following "dumb" plot (produced
with MacAnova using the option "dumb:T"):
++------+-------+------+-------+------+-------+------+-------++
1+ :
2012 May 05
1
Query about memory used in list and dataframe
Hi,
I had a query regarding which object, a list or a dataframe, consumes more
R memory. Let me clarify this:
For example, I have a df of 6 rows and 12 columns, say 'test'. I do
object.size() and find it uses 3.3 KB of memory.
I run a loop and make a list, say 'testlist', of 6 elements, each element
being the above mentioned df 'test'. The size of this list is 19.9 KB,
2005 Mar 22
2
Error: Can not handle categorical predictors with more than 32 categories.
Hi All,
My question is in regards to an error generated when using randomForest
in R. Is there a special way to format the data in order to avoid this
error, or am I completely confused on what the error implies?
"Error in randomForest.default(m, y, ...) :
Can not handle categorical predictors with more than 32 categories."
This is generated from the command line:
>