[R] %%
Hello, Where can I find info about the operator %%? Never used it but when I search for it I gives no result. Thanks, André __ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
[R] merge dataframes
Hello,
I have two dataframes:
dat1-data.frame(x=c(1.0,1.2,3.2,4.0,5.1),y=c(23,17,12,27,8))
dat2-data.frame(x=seq(0,6,by=0.1),y=rep(0,60)))
I want to replace the corresponding rows of dat2 with the ones of dat1.
I tried:
for(i in 1:nrow(dat1))
{
dat2[dat2$x==dat1[i,1],2]-dat1[i,2]
}
But I discovered that not every 5.1 is equal:
dat2[52,1][1] 5.1 dat1[5,1][1] 5.1 dat2[52,1]==dat1[5,1][1] FALSE
How to solve this?
Regards,
André
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[R] constructing yieldcurve
Hello, With which package can I build a yield curve using swap data with the bootstrapping method? Thanks for the reaction, André [[alternative HTML version deleted]] __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
[R] convert string to variable
Hello,
Is it possible to convert a string to a variable?
I have a set of names:
stocks
[1] ACCELL AHOLD AJAXARCADIS BALLAST
BAM.GROEP
[7] BESIBETER.BED BINCKBANK.NVBOSKALIS
CATE CROWN.V.GELDER
And a data frame with stockquotes.
With a for-loop I want to create variables (ACCEL, AHOLD ) with quotes
from the data frame 'data':
for (i in stocks){
k=1; m=2
m=10
??i - data[,k:m]
k=k+2; m=10+2
}
How can I do this?
Thanks for the answer.
André
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and provide commented, minimal, self-contained, reproducible code.
[R] manipulate dataframe
Hello, Can someone give me hint to change a data.frame. I want to split a column in more columns depending on the value of a other column. Thanks for the reaction, Andre Example: dat x1 x2 1 1 a 2 1 b 3 1 c 4 2 d 5 2 e 6 2 f 7 3 g 8 3 h 9 3 i in dur d1 d2 d3 1 a d g 2 b e h 3 c f i [[alternative HTML version deleted]] __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
[R] big data
Hello, I searched the internet but i didn't find the answer for the next problem: I want to do a glm on a csv file consisting of 25 columns and 4 mln rows. Not all the columns are relevant. My problem is to read the data into R. Manipulate the data and then do a glm. I've tried with: dd-scan(myfile.csv,colClasses=classes) dat-as.data.frame(dd) My question is: what is the right way to do is? Can someone give me a hint? Thanks, Arend [[alternative HTML version deleted]] __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
[R] date conversion
Hello, I have a dataframe with data such as: dat$BEGINDATUM[3] [1] 13-09-2007 dat$BEGINDATUM[4] [1] 01-11-2007 class(dat$BEGINDATUM[3]) [1] factor Now I need to make calculation with these dates. But I get these result: as.date(as.character(dat$BEGINDATUM[3])) [1] NA as.date(as.character(dat$BEGINDATUM[4])) [1] 11Jan2007 How can i convert these factors to make calculations possible. Thanks for the answer, Andre [[alternative HTML version deleted]] __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
[R] calculations with dates
Hi, I have a data.frame with factors in columns like startdate enddate 27SEP2005 01JAN2006 How can I calculate the duration between those two dates and move this in a extra column in the data.frame. Thanks, André [[alternative HTML version deleted]] __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
[R] extracting year from date
Hi, Sorry for this simple question but I searched the internet and can't find the answer. From a date I want the year extracted: data$start[1 [1] 2006-11-01 Thanks for the answer, Andre [[alternative HTML version deleted]] __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
[R] conditionally sum
Hi, Suppose I have a dataframe like: data yx 1 1 2008 2 1 2008 3 0 2008 4 0 2009 5 1 2009 Now I want to know how much 1 corresponds with 2008 and how much with 2009, the answers are 3 and 1. How can I achieve this? Thanks for the anwer. André [[alternative HTML version deleted]] __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
[R] how to eliminate an element of a list
Hi,
I want to eliminate an element of a list:
list - seq(1,5,1)
s - sample(list,1)
lets say s=3
Now I want to remove 3 from the list: list2 = {1,2,4,5}
Can someone give me a tip?
Thanks,
André
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and provide commented, minimal, self-contained, reproducible code.
