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What are the top rated businesses in a specific category in a specific city?

items = 'not loaded yet'

$.get('http://bigdatahci2015.github.io/data/yelp/yelp_academic_dataset_business.5000.json.lines.txt')
    .success(function(data){
        var lines = data.trim().split('\n')

        // convert text lines to json arrays and save them in `items`
        items = _.map(lines, JSON.parse)

        console.log('number of items loaded:', items.length)
        $('.myviz').html('number of records load:' + items.length)
        console.log('first item', items[0])
     })
     .error(function(e){
         console.error(e)
     })

function viz(arg1, arg2, arg3){    

    var tplString = '<g transform="translate(0 ${d.y})"> \
                    <rect x="0"   \
                         width="${d.width}" \
                         height="20"    \
                         style="fill:${d.color};    \
                                stroke-width:3; \
                                stroke:rgb(0,0,0)" />   \
		                 <text x="${d.width}+20" y="15">${d.label}</text> \
                    </g>'

    var template = _.template(tplString)

    function computeX(d, i) {
        return 0
    }

    function computeWidth(d, i) {
        return d.stars*100
    }

    function computeY(d, i) {
        return i * 20
    }

    function computeColor(d, i) {
        return 'red'
    }

    function computeLabel(d, i) {
        return "Name: " + d.name + "  Rating: " + d.stars
    }
	
    var filtered = _.filter(items, function(d){
      return _.includes(d.categories, arg1)
    })
    
    var pairs = _.filter(filtered, function(d){
	   return (d.city == arg2)	
    })

	pairs = _.sortBy(pairs, function(d){
			return d.stars
		}).reverse()
	
	pairs = _.take(pairs, 20)
	
	if (arg3 == "Ascending"){
		pairs.reverse()
	}
    var viz = _.map(pairs, function(d, i){ 
                return {
                    x: computeX(d, i),
                    y: computeY(d, i),
                    width: computeWidth(d, i),
                    color: computeColor(d, i),
                    label: computeLabel(d, i)
                }
             })
    console.log('viz', viz)

    var result = _.map(viz, function(d){
             return template({d: d})
         })
    console.log('result', result)

    $('.myviz').html('<svg width="100%" height="100%">' + result + '</svg>')
}

$('button#viz').click(function(){    
    var arg1 = $('input#arg1').val()
    var arg2 = $('input#arg2').val()
    var arg3 = $('input#arg3').val()
    viz(arg1, arg2, arg3)
})