Question

I try to loop through some json (clustered twees from twitter) and count how often particular keywords (hashtags) are present so I can create an ordered list of frequent words.
this (19)
that (9)
hat (3)

this I’ve done by creating

var hashtags = [];  

first time I add a new word i add th word and give the value 1

hashtags[new_tag] = 1;

the next time a find the same worj I just add to the number

hashtags[hashtag]+=1;

the result is a simple structure with words and values. I can list out what I need with

$.each(hashtags, function(i, val){
    console.log(i+ " - "+ val);
})

Now I realize I also nee to know what clusters these words where found in. So; I thing I need to add a list (array) to my “hashtags”.

I guess what I try to create is a json structure like this:

hashtags: {"this": 19, clusters: [1,3,8]},{"that": 9, clusters: [1,2]}

How do I add the arrays to the hashtags object?

Answer 1

First create an object for holding the hashtags:

var hashtags = {};

Then if an hashtag has never been seen yet, initialize it:

hashtags[new_tag] = {
    count: 0,
    clusters: []
};

Increment counts:

hashtags[new_tag].count += 1;

Add cluster:

hashtags[new_tag].clusters.push(the_cluster);