Category "reshape2"

dcast warning: ‘Aggregation function missing: defaulting to length’

My df looks like this: Id Task Type Freq 3 1 A 2 3 1 B 3 3 2 A 3 3 2 B 0 4 1 A 3 4 1

Grouped bar plot in ggplot

I have a survey file in which row are observation and column question. Here are some fake data they look like: People,Food,Music,People P1,Very Bad,Bad,Good P