Displaying 6 results from an estimated 6 matches for "katschke".
2004 Dec 08
2
Clustering in R
Is there a command to get cluster criterion for the cluster methods? SAS has its criterion, but I prefer to do it in R. If there is not a command is there code to produce criteria to choose the number of clusters?
Adrian Katschke
Statistics Grad Student
University of Nebraska-Lincoln
[[alternative HTML version deleted]]
2005 Mar 31
1
loadings or summary in Principal components
...proportion of variance is equal for each of the components, but when summary(pc.cr) is used the proportion of variance is showing different proportions. My question is why do they differ? I thought that they would report the same thing?
Thanks in advance for clearing this confusion for me.
Adrian Katschke
[[alternative HTML version deleted]]
2011 Jan 26
2
applying a set of rules to each row
...5*20))
else if (ageFedStart >= 42 & ageFedStart < 57) rtDT <-
dates(birthDT+(365.25*62))
else if (ageFedStart >= 57) rtDT <-
dates(serviceCompDT+(365.25*5))
else rtDT <- NA
}
}
else rtDT <- NA
return(rtDT)
}
Adrian R. Katschke
Data Analytics Specialist
Human Capital Program Office
Human Resources
PH: 317-212-7813
DSN: 699-7813
2006 Feb 08
1
adding variable into dataframe by indice
R-Helpers,
I am trying to insert a value into a dataframe. This value is a proportion calculated by counting the number of those individuals with that value and then inserting the proportion at the end of the dataframe to only those individuals with the given value. The problem I am running into is that the proportions are not being attached to only those individuals with the specified value
2009 Jun 03
2
Create a time interval from a single time variable
...es = c("ID",
"Age", "DaysEnrolled", "HAZ", "WAZ", "WHZ", "Food", "onARV",
"HIVStatus", "LTFUp", "Start", "Stop"), row.names = c(NA, 10L
), class = "data.frame")
Adrian Katschke
Biostatistician
IU Department of Medicine
Division of Biostatistics
akatschk@iupui.edu
317-278-6665
[[alternative HTML version deleted]]
2006 Feb 08
0
insert value according to indice
R-Helpers,
I am trying to insert a value into a dataframe. This value is a proportion calculated by counting the number of those individuals with that value and then inserting the proportion at the end of the dataframe to only those individuals with the given value. The problem I am running into is that the proportions are not being attached to only those individuals with the specified value