Re: [R] computing a subset using a loop

2012-07-16 Thread burton030
Hi,

thanks I think now I understand how it works...

I m using now this code for the first specie in all my transect IDs.

df.s - split(Baumdaten, list(Baumdaten$transectID, Baumdaten$Baumart), drop
= TRUE)
head(names(df.s), 10)
A_SEF_Abies alba A_LEF_Abies alba B_SEF_Abies alba B_LEF_Abies alba
C_SEF_Abies alba C_LEF_Abies alba D_SEF_Abies alba D_LEF_Abies alba
E_SEF_Abies alba E_LEF_Abies alba


 But can you tell me how, I can make subsets out of one of the subsets. For
example I want boxplot for the variable age.

Is it something like this? It dosent work, I know...

lapply(df.s,boxplot(A_SEF_Abies alba$Baumart))

Thanks in advanced

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[R] computing a subset using a loop

2012-07-15 Thread burton030
Dear all,

I have a data frame with different variables and I want to build different
subsets out of this data frame using some conditions and I want to use a
loop because there will be a lot of subsets and this would be saving a lot
of time.

I try to give you an overview about my data frame. I have a data frame named
Baumdaten and it has one column named transectID with different IDs
(A_SEF ,A_LEF, B_SEF etc.) there is another column named Baumart with
different species like Abies alba, Betula pendula, etc. I want to build now
subsets and the first subset should be named A_2_SEF_Abies_alba and should
contain all Abies alba that are living in A_2_SEF. So the normal code would
be

A_2_SEF_Abies_alba-subset(Baumdaten,Baumart==Abies
albapointID==A_2_SEF)

 The following step would be to replace Abies alba with Betula pendula and
so on after doing this for A_SEF I have to start with A_LEF so a lot of time
is needing thats why I want to ask if it is possible doing this by using a
loop? Hope you can understand my problem...



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Re: [R] computing a subset using a loop

2012-07-15 Thread burton030
http://r.789695.n4.nabble.com/file/n4636585/Baumdaten_aufbereitet.csv
Baumdaten_aufbereitet.csv 

Here you have an overview about my data frame...

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Re: [R] computing a subset using a loop

2012-07-15 Thread burton030
Hi,

thanks for your reply but this code just gives me a list but no subsets but
I need subsets because I want to do some calculations with these subsets and
want do make some plots etc. Is there a solution for my problem? I ve posted
an example for the first subset...

http://r.789695.n4.nabble.com/file/n4636591/A_SEF_Abies_alba.csv
A_SEF_Abies_alba.csv 

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