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Frequency

7 messages · Val, Jorge Ivan Velez, Joe King +3 more

#
sorry, I forgot to send my reply to the list, I got to remember to hit reply
all:

So I set up a dummy matrix, v1,v2,v3,v4, an datamatrix

v1 = c(5,3,4)
v2 = c(6,4,6)
v3 = c(9,7,10)
v4 = c(10,10,18)
datamatrix=c(v1,v2,v3,v4)

then do 

sort(table(datamatrix))

Joe King
206-913-2912
jp at joepking.com
"Never throughout history has a man who lived a life of ease left a name
worth remembering." --Theodore Roosevelt


-----Original Message-----
From: r-help-bounces at r-project.org [mailto:r-help-bounces at r-project.org] On
Behalf Of Val
Sent: Monday, November 02, 2009 10:35 AM
To: r-help at r-project.org
Subject: [R] Frequency

BAYESIAN INFERENCES FOR MILKING TEMPERAMENT IN CANADIAN HOLSTEINS

Hi All,

I have a data  set "x"  with several variables. Sample of the data is shown
below

 V1  v2  v3   v4

   5    6    9   10

 3    4    7   10

 4    6   10   18



I want the frequency  of each  data point sorted by their occurrence.



Below is the output that I want

10    =3

6=2

4=2

9=1

5=1

7=1

3=1

How do I do it in R?



Thanks in advance



Val


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#
Thank you Jorge and
This one works fine for me.  Is it possible to transpose it?
I tried  t(res[order(res, decreasing = TRUE)]), but it did not work!

I want the result like this
10  2
 4   2
 6   2
 3   1
  .  .
  .  .




On Mon, Nov 2, 2009 at 1:45 PM, Jorge Ivan Velez
<jorgeivanvelez at gmail.com> wrote:
#
On Nov 2, 2009, at 2:49 PM, Jorge Ivan Velez wrote:

            
And in the spirit of that fortune above, also look at:

t(t(res[order(res, decreasing = TRUE)]))


The extra t() coerces to a matrix and the outer t() does the transpose  
(I think).
#
try
  sort (table(MAT), decreasing=T)

if MAT is your matrix

I think this is what you want. though if you want to sort by the first  
occurrence then it is a different story.

Nikhil
On 2 Nov 2009, at 1:35PM, Val wrote: