Displaying 2 results from an estimated 2 matches for "playlist_id".
2011 Jul 24
1
Histogram of a dataframe subset failing
Like most help forum users, I'm very new to R. I've been having this problem:
I started with a dataframe called fullData. With the subset command, I split
it into two separate dataframes, soloData and teamData.
The hist() function works when I use...
hist( subset(fullData, fullData$playlist_id==4 )$deaths)
...the exact call to subset() that I used to create each dataframe. However,
when I input,
hist(soloData$deaths)
I get the error, " invalid number of 'breaks' ". I tried manually setting
the breaks to 20:
hist(soloData$deaths, breaks=20)
The error I got was comp...
2007 Feb 05
6
Viewing object associated via "has_many :through"?
...to :playlist
belongs_to :track_one, :class_name => :track, :foreign_key =>
''track_one_id''
belongs_to :track_two, :class_name => :track, :foreign_key =>
''track_two_id''
end
With them Im able to save to the playlists_tracks table the following:
id, playlist_id, track_one_id, track_two_id. That all seems to work
fine.
But no matter what I put in my playlists/show view file, I get an error
message when I attempt to view the tracks associated with a playlist.
For example:
<% for track in @playlist.tracks %>
<tr>
<td><%= playlist.trac...