I have a problem with a data frame in R, I have some data with two dimensions and one metric, but some combination of categories don't have data. My data look like these:
interestAffinityCategory userGender users
1 Music Lovers male 198
2 Music Lovers female 190
3 News Junkies & Avid Readers male 134
4 News Junkies & Avid Readers female 115
5 Sports Fans male 109
6 Movie Lovers male 108
7 Technophiles male 93
8 TV Lovers male 88
9 TV Lovers female 79
10 Technophiles female 70
Example, Sport Fans, only have data for male gender. I need all the categories, even with a 0 value in the users column. Like: Sport Fans, female, 0 How my data need to be: (line 8 and 6)
interestAffinityCategory userGender users
1 Music Lovers male 198
2 Music Lovers female 190
3 News Junkies & Avid Readers male 134
4 News Junkies & Avid Readers female 115
5 Sports Fans male 109
6 Sports Fans female 0
7 Movie Lovers male 108
8 Movie Lovers female 0
9 Technophiles male 93
10 TV Lovers male 88
11 TV Lovers female 79
12 Technophiles female 70
I tried to find a solution, but I only find similar cases, but with only one dimension, and it didn't work for me.
Ps.: This data is from the Google Analytics API, I want to get the top 10 categories, and make a graph with visits by gender, but for it, I need to show data for all mix of categories and gender, even with 0 visits.