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...this case 2 persons, because i=2 has no observation in 2007. I thought about creating a subset with the duplicate function. But I can't find a way to control (i) and (y). subset(data, !duplicated(i[y])) Thanx so much Andreas Kunzler ____________________________ Bundeszahn?rztekammer (BZ?K) Chausseestra?e 13 10115 Berlin Tel.: 030 40005-113 Fax: 030 40005-119 E-Mail: a.kunzler at bzaek.de

...ion automatically (maybe for loop), so that it makes no difference if there are two or ten columns involved. Selection: d[d$Var.1==9 | d$Var.1==9 | d$Var.1==9 ,] Does anybody know a way? Thanks Mit freundlichen Gr??en Andreas Kunzler ____________________________ Bundeszahn?rztekammer (BZ?K) Chausseestra?e 13 10115 Berlin Tel.: 030 40005-113 Fax: 030 40005-119 E-Mail: a.kunzler at bzaek.de

...a data (d) structure like Var NA NA NA NA NA 1 1|2 1|22|45 3 4b|24789 I need to know the maximum number of ids within one object. In this case 3 (1|22|45) Does anybody know a better way? Thanks Mit freundlichen Gr??en Andreas Kunzler ____________________________ Bundeszahn?rztekammer (BZ?K) Chausseestra?e 13 10115 Berlin Tel.: 030 40005-113 Fax: 030 40005-119 E-Mail: a.kunzler at bzaek.de

...(with R): http://cloudnumbers.com/blog Register and test for free now at cloudnumbers.com: http://my.cloudnumbers.com/register We are looking forward to get your feedback and consumer insights. Best Markus -- Dr. rer. nat. Markus Schmidberger Senior Community Manager Cloudnumbers.com GmbH Chausseestra?e 6 10119 Berlin www.cloudnumbers.com E-Mail: markus.schmidberger at cloudnumbers.com ************************* Amtsgericht M?nchen, HRB 191138 Gesch?ftsf?hrer: Erik Muttersbach, Markus Fensterer, Moritz v. Petersdorff-Campen Diese Nachricht kann vertrauliche Informationen enthalten. S...

...where b==A) 2,4,4,4,3,5,1 (Counts of a where b==B) I tried to change the class of the table result to a matrix but I could not find a way to use the results of tapply. I use tapply because b has 15 different values. Thanx Andreas Kunzler ____________________________ Bundeszahn?rztekammer (BZ?K) Chausseestra?e 13 10115 Berlin Tel.: 030 40005-113 Fax: 030 40005-119 E-Mail: a.kunzler at bzaek.de