[R] subset with two factors

[Michael Bedward]

Hello Martin,

You were almost there :)

T1 <- subset(daten1, Geschlecht=="M" & GG=="A")

Hope this helps.

Michael

On 10 December 2010 22:25, Martin Spindler <Martin.Spindler at gmx.de> wrote:
> Dear all,
>
> I have a dataframe of the following strucutre
>
>  numacc_b coverage_b Geschlecht GG
> 1        0          1          W  A
> 2        0          1          M  A
> 3        0          1          M  B
> 4        0          1          M  B
> 5        0          1          W  A
> 6        0          1          M  B
>
> I would like to form a subset consisting of all entries with Geschlecht=M and GG=A.
>
> Using
>
>>T1 <- subset(daten1, Geschlecht=="M", GG=="A")
>
> delievers
>
> data frame with 0 columns and 6 rows
>
>> T1 <- subset(daten1, Geschlecht=="M")
>
> delievers
>
>  numacc_b coverage_b Geschlecht GG
> 2         0          1          M  A
> 3         0          1          M  B
> 4         0          1          M  B
> 6         0          1          M  B
> 9         0          1          M  B
> 10        0          1          M  B
>
> But I want to select the dataframe according to both factos.
>
> What can I do?
>
> Thank you answers in advance!
>
> Best,
>
> Martin
> --
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