Displaying 1 result from an estimated 1 matches for "average_angle".
2009 Nov 06
3
Calculate Mean for each Treatment/Trial Interaction in DF
Hi,
I am create a new DF that summarizes the mean angle per treatment/trial, of
the original DF (see below). I have had some success using:
(tapply(df$Angle, INDEX=interaction(df$State,
df$Trial), FUN=mean)); however, this gives the answer as a list, which
means I would have to split the name to get the categories back. Does
anyone know a simple way to transform the Original DF into Summary