On 01/07/2019 8:28 p.m., Duncan Murdoch wrote:
On 01/07/2019 5:41 a.m., Marvin Kiene wrote:
Additionally, the 'help.search()' always just gives the result: "No results
found", for all of my students.
Those students are probably using RStudio. This appears to be an
incompatibility in the RStu
On 01/07/2019 5:41 a.m., Marvin Kiene wrote:
Additionally, the 'help.search()' always just gives the result: "No results
found", for all of my students.
Those students are probably using RStudio. This appears to be an
incompatibility in the RStudio browser to a nearly unannounced (as far
as
Hi Marvin,
One way to get around the problem with "sd" is to only process those
columns of a data frame for which the variance is defined. It is an
opportunity to show students how to write wrapper functions as well:
sd_num<-function(x) return(ifelse(is.numeric(x),sd(x),NA))
df<-data.frame(group=
Hello dear helpers,
I am currently running a small R-crash course for beginners at my
university, since I believe that there a far too few lectures about how to
use R.
Thereby, I showed the '??' or 'help.search()' function to the students as
well as the 'aggregate()' function with 'FUN=sd'.
T
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