[R] Help needed in R

From: AbouEl-Makarim Aboueissa <aaboueissa_at_usm.maine.edu>
Date: Mon, 03 Mar 2008 10:20:21 -0500


Dear ALL:

How I can find the number of observations less than each value in column one with indicator 1 in column two. Please see the data below.

For example: number of observations less than 1 with indicator 1 (including those 1 with indicator 1) =2

                    number of observations less than 2 with indicator 1 (including those 2 with indicator 1) =11
                    number of observations less than 5 with indicator 1 (including those 5 with indicator 1) =33
                    number of observations less than 10 with indicator 1 (including those 10 with indicator 1) =43
                    number of observations less than 15 with indicator 1 (including those 15 with indicator 1) =46

(1, 2,5,10,15) are the values in column one with indicator 1 in column two.

which means I need to create a vector(2,11,33,43,46) for the data in column one.

With many thanks.

Abou

Here is the data:


Consider the following matrix:

data<-matrix(c(2,2,12,2,1,10,10,4,10,1,1,2,2,1,2,10,3,1,1,1,3,5,17,23,9,9,3,3,15,5,

		  4,5,5,5,4,8,1,15,3,3,1,6,3,6,3,4,5,14,4,
		  0,0,0,0,0,1,1,0,1,1,0,1,1,0,0,1,0,1,0,0,0,1,0,0,0,0,0,0,1,1,0,1,1,1,0,
		  0,0,0,0,0,0,0,0,0,0,0,0,0,0),49,2)


      [,1] [,2]
 [1,]    2    0
 [2,]    2    0
 [3,]   12    0
 [4,]    2    0
 [5,]    1    0
 [6,]   10    1
 [7,]   10    1
 [8,]    4    0
 [9,]   10    1

[10,] 1 1
[11,] 1 0
[12,] 2 1
[13,] 2 1
[14,] 1 0
[15,] 2 0
[16,] 10 1
[17,] 3 0
[18,] 1 1
[19,] 1 0
[20,] 1 0
[21,] 3 0
[22,] 5 1
[23,] 17 0
[24,] 23 0
[25,] 9 0
[26,] 9 0
[27,] 3 0
[28,] 3 0
[29,] 15 1
[30,] 5 1
[31,] 4 0
[32,] 5 1
[33,] 5 1
[34,] 5 1
[35,] 4 0
[36,] 8 0
[37,] 1 0
[38,] 15 0
[39,] 3 0
[40,] 3 0
[41,] 1 0
[42,] 6 0
[43,] 3 0
[44,] 6 0
[45,] 3 0
[46,] 4 0
[47,] 5 0
[48,] 14 0
[49,] 4 0


AbouEl-Makarim Aboueissa, Ph.D.
Assistant Professor of Statistics
Department of Mathematics & Statistics
University of Southern Maine
96 Falmouth Street
P.O. Box 9300
Portland, ME 04104-9300

Tel: (207) 228-8389
Fax: (207) 780-5607
Email: aaboueissa_at_usm.maine.edu

          aboueiss_at_yahoo.com
Office: 301C Payson Smith



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