coolcong's articles:

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how to change the numeric value to yyyymm format 3 48 (10/24/2012 9:21:16 PM) comp.soft-sys.sas I have a column called yearmon with numeric values like: 201110, 201111, 201212... Do you know how to change the numeric values to the yyyymm? I try to change it to yyyymm format but it gives me the wrong valu... Tom

question about how to add records with zero counts 2 140 (5/12/2010 5:58:12 AM) comp.soft-sys.sas Hi all, I encountered a problem in my project. I use proc means to generate the frequency talbe like below. As you notice, when count is zero, the output statement in proc means will not produce the reco... QiJun

How to transform datetime19. to yymm7. 2 309 (4/9/2010 7:52:29 PM) comp.soft-sys.sas Hi all, I am very sorry to bother you again. I encounter a problem recently. I just tried what I know, but still can not figure it out. I have a variable called date in my date set with format datetime1... QiJun

The problem with sorting MONYY7. data 3 210 (4/1/2010 8:50:17 PM) comp.soft-sys.sas Hi all, I have a column "date" with type MONYY7. eg. Jun2004 Apr2001 Apr2004 . . When I sort the data by "date", the order is by alphabetical order of the initial ... QiJun

how to analyze censored data within longitudinal framework 0 20 (10/16/2009 2:11:39 PM) comp.soft-sys.sas Hi all, Recently, I encountered a problem that I do not know how to use sas to analyze it. The response is right censored at value 60. And each subject is measured repeatedly over 7 time points. Do you have any... QiJun

how to stack up the data 0 30 (5/1/2009 4:57:39 PM) comp.soft-sys.sas Hi, all, I have several x's and two response y1 and y2. So the data is like this: x1 x2 y1 y2 1 5 2 48 2 6 4 32 Now i will create an indicator variable ind about y1 and y2(ind=1,if it is y1; ind=0,if... QiJun

Proc mixed, specification of method 0 35 (3/18/2009 6:24:01 PM) comp.soft-sys.sas Hi,all, I am learning the course longitudinal data analysis. And in our notes and sample code, when we use the Proc mixed, we can sepcify the method either ml or reml. But I was confused when I should use o... smartwind

coolcong's replies:

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Re: how to stack up the data #2 1 26 (5/1/2009 5:09:08 PM) comp.soft-sys.sas Joe posted first but here is an alternative solution: Data have; input x1 x2 y1 y2; cards; 1 5 2 48 2 6 4 32 Proc Print; run; Data Wanted; set have; drop y1 y2; Y = y1; ... nathaniel.wooding (1453)