[R] How to sort frequency distribution table?

[Jim Lemon]

On 03/08/2012 03:46 PM, Manish Gupta wrote:
> Hi,
>
> I am working on categorical data with column as disease name(categaory).
>
> My input data is
>   [1] Acute lymphoblastic leukemia (childhood)
>   [2] Adiponectin levels
>   [3] Adiponectin levels
>   [4] Adiponectin levels
>   [5] Adiponectin levels
>   [6] Adiponectin levels
>   [7] Adiposity
>   [8] Adiposity
>   [9] Adiposity
> [10] Adiposity
> [11] Age-related macular degeneration
> [12] Age-related macular degeneration
> [13] Aging (time to death)
> [14] Aging (time to event)
> [15] Aging (time to event)
> [16] Aging (time to event)
> [17] Aging (time to event)
> [18] AIDS
> [19] AIDS
> [20] AIDS
> .....
>
>
> when i use table command, i get
>
>
> [,1]
> Acute lymphoblastic leukemia (childhood)                             1
> Adiponectin levels
> 5
> Adiposity
> 4
> Age-related macular degeneration
> 2
> Aging (time to death)
> 1
> ......
>
> But i need to sort this table by frequency and need to plot a histogram with
> lable first column (e.g. Adiposity , Age-related macular degeneration  as
> bar name). How can i do it?
>
Hi Manesh,
The freq function (prettyR) returns a vector (or a list of vectors if 
more than one variable is passed) with the same information as the table 
function. However, freq orders the table in descending frequency by default.

Jim