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Hello, I want to perform an lme on a database with this structure: ID Sequence Temperature Tumour Error 1 5 0 1 8.721872e-08 1 5 0 2 8.695348e-08 1 5 0 3 2.019604e-13 1 5 37 1

Dear R community, I am a neophyte and I cannot figure out how to accomplish keeping only the first record for each ID in a data.frame that has assorted numbers of records per ID. I studied and found references to packages plyr and sql for R, and I fear the documentation for those was over my head and I could not identify what may be there to reach my goal. If someone could point me toward a

Hi, I am simply looking for the function that will allow you to look at the top 20 lines of a long dataset? LP On Mon, Nov 1, 2010 at 10:46 AM, Louis Plough <lplough@usc.edu> wrote: > Hi, > I am trying to generate all possible permutations (choose 2) of a vector, > b, for example--using 'combn' the combinations in only one direction are > generated... > > >

All ? I have an example data frame x lc1 id 43.38812035 85 ga1 47.55710661 85 ga1 47.55710661 85 ga2 47.55710661 85 ga2 51.99211429 85 ga3 51.99211429 85 ga3 51.99211429 95 ga1 54.78449958 95 ga1 54.78449958 95 ga2 54.78449958 95 ga2 56.70201864 95 ga3 56.70201864 95 ga3 56.70201864 105 ga1 59.66361903 105 ga1 59.66361903 105 ga2 61.69573564 105 ga2 61.69573564 105 ga3 61.69573564 105 ga3