Hi Ramya,
You're almost there. Just specify that you want to order all the data set
based-on the third column. Here is an example:

# Data
information=data.frame(
                geneset=letters[1:7],
                chromosome=1,
                hit=c(51,24,30,17,35,55,61))

# New data
information[order(information[,3],decreasing=TRUE),]

HTH,

Jorge



On Wed, Nov 5, 2008 at 2:02 PM, Rajasekaramya <ramya.victory@gmail.com>wrote:

>
>  Geneset_name                              #Chromosome  #Hit_in_Biomart
> original_geneset_len  Missing.genes
>  [1,] "AGUIRRE_PANCREAS_CHR12"              "1"         "51"
> "59"                 "8"
>  [3,] "AGUIRRE_PANCREAS_CHR9"               "1"         "24"
> "24"                 "0"
>  [4,] "AGUIRRE_PANCREAS_CHR1"                "1"         "30"
> "31"                 "1"
>  [5,] "AGUIRRE_PANCREAS_CHR18"              "1"         "17"
> "17"                 "0"
>  [6,] "AGUIRRE_PANCREAS_CHR7"               "1"         "35"
> "48"                 "13"
>  [7,] "AGUIRRE_PANCREAS_CHR8"               "1"         "55"
> "61"                 "6"
>
> Above is a dataframe information.
>
> i need to sort the entire dataframe based on the  3rd colum. in decending
> order.
>
> I tried using order
>
> information[order(information[,3])] but it gives me only the ordered first
> coulmn that too i am not sure that it really works.
>
> Kindly let me know with any suggestions.
>
> Regards
> Ramya
>
>
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