Displaying 14 results from an estimated 14 matches similar to: "Assignment of values with different indexes"
2013 Mar 14
2
Modifying a data frame based on a vector that contains column numbers
Hello!
# I have a data frame:
mydf<-data.frame(c1=rep(NA,5),c2=rep(NA,5),c3=rep(NA,5))
# I have an index whose length is always the same as nrow(mydf):
myindex<-c(1,2,3,2,1)
# I need c1 to have 1s in rows 1 and 5 (based on the information in myindex)
# I need c2 to have 1s in rows 2 and 4 (also based on myindex)
# I need c3 to have 1 in row 3
# In other words, I am trying to achieve this
2008 Dec 20
1
How to do indexing after splitting my data-frame?
Hello,
after splitting a data-frame I want to access the results.
Maybe the problem is, that the factor/index is a string...
...or do I miss knowing details of the index-uasge?
Please look and help:
=======================================
> weblog <- read_weblog("web.log")
>
>
> str(weblog)
'data.frame': 2247 obs. of 18 variables:
$ host : Factor w/ 77
2005 May 17
2
how to use list index to get vector
I have a simple question, but I couldn't find the answer in R manuals.
Assume I have a list:
> foo <- list()
> foo[[1]] <- c(1, 2, 3)
> foo[[2]] <- c(11,22,33)
> foo[[3]] <- c(111,222,333)
> foo
[[1]]
[1] 1 2 3
[[2]]
[1] 11 22 33
[[3]]
[1] 111 222 333
How to use list index to get a vector of, say, the first elements of
list elements?
That is, how to get a vector
2007 Apr 28
6
Determine how many documents a term occurs in
Is there a fast way to determine how many documents a term occurs in,
besides iterating through every document with TermDocEnum?
--
Best regards,
Stian Gryt?yr
2012 Oct 08
3
turn list into dataframe
Dear R users,
I'm starting to use 'apply' functions rather than for loops in R, and
sometimes the output is a bit different than what I want. In this case, the
command was
tapply(myvector,myindex,cumsum)
And the output was something like this:
$`SNRL1 Core 120`
[1] 2.8546 4.0778 5.2983 6.3863 7.5141 8.5498 9.5839 10.6933
$`SNRL1 Core 230`
[1] 7.6810 8.7648 9.8382
2010 Oct 25
2
Find index of a string inside a string?
Hi,
I am searching for the equivalent of the function Index from SAS.
In SAS: index("abcd", "bcd") will return 2 because bcd is located in the 2nd cell of the abcd string.
The equivalent in R should do this:
> myIndex <- foo("abcd", "bcd") #return 2.
What is the function that I am looking for?
I want to use the return value in substr, like I do
2002 Mar 21
5
repeating rows or columns within a matrix
Hello
Spse I have a matrix, say
1 2 3
4 5 6
7 8 9
and I would like to expand it by repeating rows within the matrix, to
get, if the repeating factor is 2, say:
123
123
456
456
789
789
(or columnwise as well) . There must be a smart way of doing that?
Many thanks
Juhana Vartiainen
juhana.vartiainen at labour.fi
-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-
2006 Sep 05
4
No matches
The following script creates a search index and then searches it. I get
no results? Where am I going wrong?
Thanks.
-----------BEGIN SCRIPT----------------
require ''rubygems''
require ''ferret''
include Ferret
path = ''/tmp/myindex''
field_infos = Ferret::Index::FieldInfos.new()
field_infos.add_field(:name, :store => :yes, :index => :yes)
2007 Aug 16
1
time series with quality codes
list(...),
I am working with environmental time series (eg rainfall, stream flow)
that have attached quality codes for each data point. The quality
codes have just a few factor levels, like "good", "suspect", "poor",
"imputed". I use the quality codes in plots and summaries. They are
carried through when a time series is aggregated to a longer
time-step,
2017 Dec 06
2
[Gluster-devel] Crash in glusterd!!!
Without the glusterd log file and the core file or the backtrace I can't
comment anything.
On Wed, Dec 6, 2017 at 3:09 PM, ABHISHEK PALIWAL <abhishpaliwal at gmail.com>
wrote:
> Any suggestion....
>
> On Dec 6, 2017 11:51, "ABHISHEK PALIWAL" <abhishpaliwal at gmail.com> wrote:
>
>> Hi Team,
>>
>> We are getting the crash in glusterd after
2003 Jun 09
1
estimate the number of clusters
Dear All,
I am using Silhouette to estimate the number of clusters in a microarray
dataset.
Initially, I used the iris data to test my piece of code as follows:
library(cluster)
data(iris)
mydata<-iris[,1:4]
maxk<-15 # at most 15 clusters
myindex<-rep(0,maxk) # hold the si values for each k clusters
mdist<-1-cor(t(mydata)) #dissimlarity
2017 Dec 06
0
[Gluster-devel] Crash in glusterd!!!
Hi Atin,
Please find the backtrace and logs files attached here.
Also, below are the BT from core.
(gdb) bt
#0 0x00003fff8834b898 in __GI_raise (sig=<optimized out>) at
../sysdeps/unix/sysv/linux/raise.c:55
#1 0x00003fff88350fd0 in __GI_abort () at abort.c:89
[**ALERT: The abort() might not be exactly invoked from the following
function line.
If the trail function
2017 Dec 06
1
[Gluster-devel] Crash in glusterd!!!
I hope these logs were sufficient... please let me know if you require more
logs.
On Wed, Dec 6, 2017 at 3:26 PM, ABHISHEK PALIWAL <abhishpaliwal at gmail.com>
wrote:
> Hi Atin,
>
> Please find the backtrace and logs files attached here.
>
> Also, below are the BT from core.
>
> (gdb) bt
>
> #0 0x00003fff8834b898 in __GI_raise (sig=<optimized out>) at
>
2007 May 10
5
Segmentation fault on large index
I''m getting a segmentation fault on a large index (15GB). I''m running
ferret 0.11.4 on OpenSuSE 10.2 with ruby 1.8.6. The segmentation
fault appeared after I optimized the index, see further below for the
error message I got before that. Ferret works perfectly on other (smaller)
indexes.
Is this a known issue, and if so, is there a workaround?
--------------------- after