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5 results for “from:Niklaus Kuehnis”

What does "smaller than" comparison do on strings?
Niklaus Kuehnis · May 25, 2011 · r-help

What's the logic behind the following, and where can I find any documentation about it? In particular, why are 2:9 - as characters - not regarded as being smaller than 10? # R-Code: a <- as.character(1:12) a < 10...

agrep: How to match with more than 1 substitution?
Niklaus Kuehnis · Jun 23, 2011 · r-help

Hi all I'm trying to match a numeric code to a vector of numeric codes: a <- c(12345, 12346, 12347) agrep(12349, a, max.distance=list(substitutions=1)) # [1] 1 2 3 agrep(12399, a, max.distance=list(substitutions...

Mediation with censored outcome
Niklaus Kuehnis · Jul 7, 2011 · r-help

Hi all, Is it possible to test mediation effects with a censored outcome variable using the 'mediation' package? While on p. 1f. of Imai, Keele, Tingley and Yamamoto (2011) the tobit model is mentioned for use with 'mediate', Table 1...

Replacing null values
Niklaus Kuehnis · Jul 30, 2011 · r-help

On 30.07.2011 21:58, Jeffrey Joh wrote: > Sorry about the last message. I forgot to turn the HTML off. > I would like to reorder a table by column A, df2 <- df[order(df$A),] > then fill column B...

multiple crosstabulation
Niklaus Kuehnis · Jun 3, 2006 · r-help

Hi, Two questions: 1) I have a data.frame of binary factors (x, y, z, ...) and would like to do tables like "table(a,b)" for any combination of factors, 2 by 2. I.e. I'm looking for the...

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