Displaying 20 results from an estimated 10000 matches similar to: "About Matrix"
2009 Oct 01
2
The problem of readLines
Dear R-users,
I use "readLines" to read data, but when processing the large data set, there are few files which can not be readed in:
48: In readLines(name_c[i]) ... :
incomplete final line found on 'C:/Documents and Settings/lma/My Documents/habitdata/244052900243997/calllog/calllog_log-20050505T121611.txt'
...
Whats the problem about this?
Regards,
Tammy
2009 Sep 01
3
data frame
HI, R user,
I generate the vectors with the same length. I want to put each vector into each column of data frame. Why it doesnt work`?
rm<-data.frame()
for(a in 1:6){
rm[,a]<-getmeasure(p1,a,speech)
}
thanks a lot
Tammy
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2009 Mar 05
2
File checking
Hello,
How can I check if file is empty in R, if it is, then jump out and read next file; if it isn't, then read through?
Thanks a lot for any help.
Tammy
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2009 Sep 22
2
Manipulate directory-help
Dear R-users,
I have a problem:
I have many files in the directory:"C:/Documents and Settings/lma/Desktop/FamilyAEntrepreneurs/Entrepreneurs/Juha"
I want to copy those files into the new directory: "C:/Documents and Settings/lma/My Documents/Juha/book" (<-use "paste"), I first create the directory using dir.create, but it looks doesnt work.
How do I implement
2009 Aug 24
2
Generate random sample interval
Hi, R users,
I have a problem about how to generate random sample interval from a duration.
For example, during a time duration 0-70s, I want to generate a sample which last 10s.
the sample could be 0-10 or 30-40s or 25-35s etc
How could I do it in R`??
Thanks a lot.
Tammy
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2009 Mar 11
1
Date frame
Hi, All,
How to make a data frame, each row of data frame store the different length of vector?
Thanks.
Tammy
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2009 Mar 17
4
Merging
Hi, All.
I have a data frame with the part as :
.....
142 2006-02-22 16:28:18 useractivity_act 8 0
143 2006-02-22 16:28:26 4 2 0
144 2006-02-22 16:28:28 3 3 0
145 2006-02-22 16:28:31 4 4 1
146 2006-02-22 16:28:35 3 159 0
147
2009 Sep 29
1
How to parsing data like this in R
Hi, R-users,
I met a problem:
Items:[Anna 'moi =) akku loppu joskus 4ltä. Kestää kauan nää..'\tAmer, Tuusula (0:20)\t20\t12\t16\t00\t00\t11]/Anne 'Ei jakoa,uus päivä muistio et 4n niin peruin. Hups'\t (0:16)\t0\t12\t18\t00\t00\t11/Elina 'Konsertissa. En tod. vastaa teille'\tEtu-Töölö, Helsinki (2:40)\t24\t12\t18\t00\t00\t11
I want to parsing the above data into the
2009 Sep 21
3
Create directory and copy files in R
HI, All R users,
My problem is:
> fn
[1] "C:/Documents and Settings/lma/Desktop/FamilyAEntrepreneurs/Entrepreneurs/Juha/book_log-20041210T095019.txt"
> dpath
[1] "C:/Documents and Settings/lma/My Documents/Juha/book"
I want to make a function "cyfun" to copy all files in "dir" to "deskdir" but I always got the following problem:
Error
2009 Oct 02
1
Please Help me!
Hi, R-users,
I have a problem: Because there are few files which can't be readed
into R completely, so on the following subsequence programme, I use
write.table, which creates the "NA" files for those incomplete files
autimatically.
I don't want those NA files.
My programes formats looks like:
name_c<-Sys.glob("C:/Documents and Settings/lma/My
2009 Mar 12
4
who can give me some hint?
Hi All,
> act_2
Date Dtime Hour Min Second Rep
51 2006-02-22 14:52:18 14 52 18 useractivity_act
52 2006-02-22 14:52:18 14 52 18 4
55 2006-02-22 14:52:49 14 52 49 4
57 2006-02-22 14:52:51 14 52 51 4
58 2006-02-22 14:52:52 14 52 52 3
60 2006-02-22 14:54:42 14 54
2012 Dec 13
3
how to aggregate the dataset
HI,
Sorry for messing up..
I want to transform the following dataset:
product min_price max_price mean_price country price_band
11 34 50 40 VN 0-300
22 10 30 15 VN 0-300
Into:
product VN price_band
11 40 0-300
[34,50]
22 15
2012 Nov 08
5
map two names into one
Thanks.
Yes. Your approach can identify:
Glaxy ace S 5830 and
S 5830 Glaxy ace
But you can not identify using same program:
Iphone 4S 16 G
Iphone 4S 16G
How should I solve both in same time.
Kind regards,Tammy
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2013 Jan 24
3
how to combine unequal rows and columns in R
HI,
I have the following list:
crosspries
$crosspries[[1]]
Product Year_Month prod1
A 201208 1
B 201208 2
C 201208 1
$crosspries[[2]]
Product Year_Month prod1 prod2
A 201209 1 1
B 201209 2
2013 Jan 25
3
how to delete the null elements in list
HI,
I have the list:
> suu
[[1]]
NULL
[[2]]
NULL
[[3]]
item_id prod
1 2
[[4]]
item_id prod
1 2
2 4
how to delete all "NULL" elements from suu to get only
>suu
[[3]]
item_id prod
1 2
[[4]]
item_id prod
1 2
2 4
??
Kind regards,
Tammy
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2012 Dec 12
2
how to grep in r
Hi,
I met this problem.
Trade_Price_Band x
1 0-30 0.6237240
2 101-150 0.6743857
3 151-200 0.6778513
4 201-300 0.6640293
5 301-400 0.6630991
6 31-50 0.6314547
7 401-500 0.6776249
8 500+ 0.6557705
9 51-75 0.6621073
10 76-100 0.6623469
I want to get the following matrix
2013 Mar 14
2
HOw to achieve big vector times big dataframe in R?
HI,
I have the following question:
Vector a with lenght 150
A B C D.........
dataframe b with dim 908X150
1 1 1 1.....
2 2 2 2
3 3 3 3
4 4 4 4
................
final result I want is the vector with length 908:
A*1+B*1+C*1+D*1+.....
A*2+B*2+C*2+D*2+.....
A*3+B*3+C*3+D*3+.....
A*4+B*4+C*4+D*4+.....
....
because of too large dimension, how can I achieve this in R?
2009 Sep 30
2
Change directory to implement same programes
HI, R-Users,
I have one problem:
I have written the the programs which process all file in one directory: for example:
setwd("C:/Documents and Settings/lma/My Documents/Vappu-saved/Log") as the start.
..........
But I have many folders like "Vappu-saved" and there are a lot of files in each directory. What I want is using the same program what I write for the above
2013 Jan 22
3
How to align group based on the common values of two columns in r
HI,
I met this problem:
I have the feature data frame:
Feature OS
4 2
4 1
4 3
1 2
4 1
what I want to do is to autimatically create one more column called "group":
Feature OS Group
4 2 1
4 1 2
4 3
2012 Dec 13
2
How to create multiple country's data into multiple sheets of one excel
HI,
I have large dataset of many countries. I have written the program to run through each country to generate one output for each country. I want to put the output like this:
one sheet has output for one country. How do I achieve it by r.
I have tried this:
library(xlsx)
write.xlsx(nnn, "vn.xlsx", sheetName="Sheet1") [1]
but when I change sheetName="Sheet2"