[R] Help needed in R

[AbouEl-Makarim Aboueissa]

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