Thanks again!
I would like to construct 14 new 'year' dummy variables. I have 14 years:
1992:2006 with 231 observations pr. year. The year dummies should assign a 1
if the observation is within the specific year and 0 otherwise. So for
example: 1992dummyvariable=1 if year=0 and so on.
P
--
Vie
Hello again,
Try changing the lines where you create 'EMUmix3' and 'EMUmix4' by the
following.
EMUmix3 <- Reduce(`&`, lapply(countries, function(x,y){country1 %in% euro2 &
!country2 %in% euro2}))
# euro2 are also the EMUcountries, BUT in 2001 Greece became a EMU member.
So in the interval (1999
Thank you David!
That was EXACTLY what I needed. I have one last question:
I want to create a mix of EMU and nonEMU country pairs. I have tried with:
EMUmix1<-Reduce(`&`, lapply(countries,function(x,y){country1 %in% euro &
country2 %in% noneuro}))
# Where euro are the EMU countries and none
On Apr 23, 2012, at 5:21 PM, R. Michael Weylandt wrote:
That's not the ifelse() that's the for loop returning NULL
(everything's a function!). If you put the assignment inside you'll
get expected behavior.
x <- (for(i in 1:5) i) # Strange
for(i in 1:5) x<- i # Normal (but notice you only get t
That's not the ifelse() that's the for loop returning NULL
(everything's a function!). If you put the assignment inside you'll
get expected behavior.
x <- (for(i in 1:5) i) # Strange
for(i in 1:5) x<- i # Normal (but notice you only get the last value
because previous ones are overwritten)
Michae
Hi
> EMU1993<-(for (i in 1:nrow(data)){
+ ifelse(year==1992,sum(avgflowEMU),0)
+ })
>EMU1993
NULL
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On 23-04-2012, at 21:37, phillip03 wrote:
> Thank you!
>
> Do you know why ifelse() sometimes returns "NULL" ?
Please provide a reproducible example for this phenomenon.
Berend
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Thank you!
Do you know why ifelse() sometimes returns "NULL" ?
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R-help@r-project.org m
>
> If I want to make a new data.frame where it is the NONEURO avgflows. how
> do I do that ?
>
Exactly like above, but without the negation (the exclamation mark).
You must also start to use the help system, for instance:
?"!"
Rui Barradas
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Hi RUI
Thank you so much ! I know I have a lot to learn : / sorry for that.
If I want to make a new data.frame where it is the NONEURO avgflows. how do
I do that ?
Ph
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Hello,
phillip03 wrote
>
> Thank you Rui
>
> Can you help me with my ifelse problem - I would like to add a list to my
> data.frame where avgflow in those rows where ONLY my country pair both are
> in euro
>
First of all, try to use better (much, much better) code writing.
What are you trying
Thank you Rui
Can you help me with my ifelse problem - I would like to add a list to my
data.frame where avgflow in those rows where ONLY my country pair both are
in euro
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phillip03 wrote
>
> Does mean(avgflow[EMU]) sum the avgflows for all countrypairs where
> EMU[i]==TRUE and take the mean ? Practical question: is mean(avgflow[EMU])
> = mean(avgflow[EMU==TRUE]) ???
>
Answer: yes.
Rui Barradas
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Does mean(avgflow[EMU]) sum the avgflows for all countrypairs where
EMU[i]==TRUE and take the mean ? Practical question: is mean(avgflow[EMU]) =
mean(avgflow[EMU==TRUE]) ???
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I have tried ifelse:
> trade<-data.frame(avgflow,EMU,stringsAsFactors=FALSE)
> avgflowEURO<-rep(0,nrow(trade))
> trade1<-(for (i in
> 1:nrow(trade)){ifelse(EMU[i]==1,avgflowEURO[i]<-avgflow[i],NA)})
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Hello,
phillip03 wrote
>
> The text below is a part of, some work I have to do, which is due in 2
> days and I am strung up with a lot of other stuff, so I was hoping someone
> would take 5 mins and help me ??
>
> Here is a part of my data.frame:
>
> year country1 country2 contig comlang
Look at ?ifelse, a combination of logical subscripting and mean(), or even
better ?ave -- I can't say too much more; there's a no homework policy on this
list and I recognize that first solution as mine already... (I should have
noted that the first time)
Michael
On Apr 22, 2012, at 2:54 PM,
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