creating a subset of a dataset using ifelse statement?

I am using R in a Microsoft Windows environment.

  I have a dataset called ?mp1b?.  I have a variable called h.

  h can take a value from -1 to 5.

  If h <1, I want to create a new dataset called mp2 that is the same as mp1b:

  ?mp2<-mp1b?

  If h > 0, I want to set create a dataset mp2, where I limit the original dataset to those where mp1b$group = =h. similar to:

  ?mp2<-subset (mp1b, group= = h)?

  I have tried this ifelse statement, but it does not seem to work as expected.

  ?mp2<-ifelse(h<1,mp1b,subset(mp1b,cluster_q==h))?
mp2 <- if(h<1) mp1b else subset(mp1b,cluster_q==h)

Uwe Ligges
  Assistance is appreciated.

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creating a subset of a dataset using ifelse statement?

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