maperator/js/viz6.js at master · blehman/maperator

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function build_map(){

// uses leaflet.js to build a zoomable map

var map = L.map('map').setView([40.0274,-105.2519],13);

var stamen = L.tileLayer('http://{s}.tile.stamen.com/toner/{z}/{x}/{y}.png', {attribution: 'dev.'}).addTo(map);

var toolserver = L.tileLayer('http://{s}.www.toolserver.org/tiles/bw-mapnik/{z}/{x}/{y}.png');

var baseLayers = {"stamen": stamen, "toolserver-mapnik":toolserver};

L.control.layers(baseLayers).addTo(map);

return map;

}

function set_sizes(){

console.log('setting sizes')

// keep all window sizes in scope

var windowHeight = +window.innerHeight;

var windowWidth = +window.innerWidth;

// map sizes

var margin = {top: windowHeight*0.01, right: 0, bottom: windowHeight*0.1, left: windowWidth*0.10};

var sizes = {

mapWidth: (0.40 * windowWidth)

, mapHeight: (0.40 * windowHeight)

, mapLeft: d3.min([(0.02 * windowWidth),20])

, mapTop: d3.min([(0.05 * windowHeight),30])

, timelineWidth: 0.36 * windowWidth

, timelineHeight: 0.20 * windowHeight

, timelineMarginLeft: (windowWidth * 0.02)+35

, photoHeight: 0.40 * windowHeight

, windowHeight: windowHeight

, windowWidth: windowWidth

}

sizes["timelineMarginTop"] = (sizes.mapHeight)+ d3.min([(sizes.windowHeight * 0.10),60]);

sizes["tweetMarginLeft"] = ( sizes.mapWidth + sizes.mapLeft + d3.min([sizes.windowWidth*0.1,20]));

sizes["photoMarginLeft"] = sizes.tweetMarginLeft;

sizes["tweetTop"] = sizes.mapTop;

// ISSUE: need to determine how to get the highe of the tweet

if (d3.select("#tweet iframe")[0][0] == null){

console.log("tweetWidgetHeight: 0")

var tweetWidgetHeight = 0;

}else{

console.log(+d3.select("#tweet iframe")[0][0].height)

var tweetWidgetHeight = +d3.select("#tweet iframe")[0][0].height;

}

// ISSUE: remove the 150 and replace with `tweetWidgetHeight`

sizes["photoTop"] = sizes.tweetTop + 155 + d3.min([sizes.windowWidth*0.1,20]);

// adjust map

d3.select('#map')

.style('left',sizes.mapLeft + 'px')

.style('top',sizes.mapTop + 'px')

.style('width',sizes.mapWidth + 'px')

.style('height',sizes.mapHeight + 'px');

// adjust timeline svg

d3.select(".timeline")

.attr("width", sizes.windowWidth)

.attr("height", sizes.windowHeight)

// adjust timeline volume plot

d3.select('.volume')

.style('height',sizes.timelineHeight)

.attr("transform", "translate(" + (sizes.timelineMarginLeft) + "," + (sizes.timelineMarginTop) + ")");

// adjust tweet

d3.select('#tweet')

.style('margin-left',sizes.tweetMarginLeft + 'px')

.style('top',sizes.tweetTop+'px');

// adjust photo

d3.select('#photo')

.style('margin-left',sizes.tweetMarginLeft + 'px')

.style('top',sizes.photoTop + 'px')

.style('border-radius','20px')

.style('height',sizes.photoHeight + 'px');

var scales = update_scales(sizes);

return sizes;

}

function update_scales(sizes){

// function to create x scale

var x = d3.time.scale()

.range([0, sizes.timelineWidth]);

// function to create y scale

var y = d3.scale.linear()

.range([sizes.timelineHeight, 0]);

// https://github.com/mbostock/d3/wiki/Time-Formatting

// function to build xAxis options

var xAxis = d3.svg.axis()

.scale(x)

.ticks(Math.max(sizes.timelineWidth/200,2))

.tickFormat(d3.time.format("%b %d"))

.orient("bottom");

// function to build yAxis options

var yAxis = d3.svg.axis()

.scale(y)

.ticks(Math.max(sizes.timelineHeight/50,2))

.orient("left");

return {x:x, y:y, xAxis:xAxis, yAxis:yAxis}

}

function create_timeline2(data, sizes){

d3.select(".volume").remove();

// get scales

var scales = update_scales(sizes);

var x = scales.x

, y = scales.y

, xAxis = scales.xAxis

, yAxis = scales.yAxis;

// function to draw a line given across coordinates (x,y).

var line = d3.svg.line()

.x(function(d) { return x(d.key); })

.y(function(d) { return y(d.value); });

// create a container inside a pre-existing "id=timeline" element.

var svg = d3.select("#timeline")

.classed("timeline",true)

.attr("width", sizes.windowWidth)

.attr("height", sizes.windowHeight)

.append("g")

.classed("volume",true)

.attr("transform", "translate(" + (sizes.timelineMarginLeft) + "," + (sizes.timelineMarginTop) + ")");

var brush = d3.svg.brush()

.x(x)

.on("brush", brushed);

var brushElement = svg.append("g")

.attr("class", "brushElement")

.call(brush)

.selectAll("rect")

.attr("y", 0)

.attr("height", sizes.timelineHeight);

// add domain to scales

x.domain(d3.extent(data, function(d) { return d.key; }));

y.domain(d3.extent(data, function(d) { return d.value; }));

// create line

svg.append("path")

.datum(data)

.attr("class", "line")

.attr("d", line);

// create x axis

svg.append("g")

.attr("class", "x axis")

.attr("transform", "translate(0," + sizes.timelineHeight+ ")")

.call(xAxis);

// create conditional y axis

if (sizes.windowHeight > 600){

svg.append("g")

.attr("class", "y axis")

.call(yAxis);

svg.append("text")

.attr("transform", "rotate(-90)")

.attr("y", 6)

.attr("dy", ".71em")

.style("text-anchor", "end")

.text("Tweets");

};

function brushed(){

//console.log(brush.extent())

d3.selectAll(".tweet_location")

.each(function(d) {

var checkDate = new Date(this.getAttribute("timeStamp"));

var lowExtent = new Date(brush.extent()[0]),

highExtent = new Date(brush.extent()[1]);

if (lowExtent <= checkDate && checkDate <= highExtent) {

d3.select(this).style({fill: "red", stroke: "red"});

} else {

d3.select(this).style({fill: "steelblue", stroke: "steelblue"});

}

})

}

function add_features_to_map(timeStamp,features,map){

// add features to the map

features.forEach(function(feature,i){

//var feature["timeStamp"] = timeStamp;

//var feature["timeStamp_str"] = timeStamp.toString();

// add points to map try to do this directly w/ geoJson

L.geoJson(feature).addTo(map);

});

}

function add_longlat_to_map(timeStamp,features,map,geoLayer){

// add features to the map

features.forEach(function(feature,i){

//var feature["timeStamp"] = timeStamp;

//var feature["timeStamp_str"] = timeStamp.toString();

// add points to map try to do this directly w/ geoJson

geoLayer.addData(feature);

});

}

function convert_to_array(data,map){

// to iterate, we transform the object to array

var dataArray = d3.entries(data.time_series.interval_data);

// function for parsing dates

var parseDate = d3.time.format("%Y-%m-%d %H:%M:%S").parse;

// create empty layer to add points

var geoLayer = L.geoJson().addTo(map)

// parse dates and coerce values

function iterate_(dataArray){

parsedDataArray = [];

dataArray.forEach(function(ts) {

//console.log(ts.value.tweets_geo.features)

//add_features_to_map(ts.key,ts.value.tweets_geo.features,map);

//add_longlat_to_map(ts.key,ts.value.tweets_geo.features,map,geoLayer);

// create timeline data

parsedDataArray.push({

key:parseDate(ts.key)

, value:+ts.value.stats.tweets_geo_all

});

return parsedDataArray.sort(function(a,b){

return b.key-a.key

});

}

return iterate_(dataArray);

}

function decimal_count(num) {

return (num.split('.')[1] || []).length;

}

function add_points_to_map(data,map){

var dateArray = Object.keys(data.time_series.interval_data);

var point_counts = {};

dateArray.forEach(function(ts){

data.time_series.interval_data[ts].tweets_geo.features.forEach(function(feature){

// get geo

var longitude = feature.geometry.coordinates[0];

var latitude = feature.geometry.coordinates[1];

var tweetUrl = feature.properties.tweet_url;

var tweetID = feature.properties.tweet_url.split('/')[5];

// remove this if block once the geo is corrected

if (decimal_count(latitude.toString())>4 & decimal_count(longitude.toString())>4){

// Use leaflet to add circles to the map

L.circle([+latitude,+longitude],130,{

color: 'steelblue',

fillColor: 'steelblue',

fillOpacity: 0.2,

className: "tweet_location_pre_data"

}).addTo(map);

// add data to circles

d3.select(".tweet_location_pre_data")

.classed("tweet_location_pre_data",false)

.classed("tweet_location",true)

.classed("tweetID_"+tweetID,true)

.attr("tweet_url",tweetUrl)

.attr("tweetID",tweetID)

.attr("timeStamp",ts)

.attr("timeStampTag",ts.split(":")[0]);

if (feature.properties.hasOwnProperty("media")){

// add media to circle

d3.select(".tweetID_"+tweetID)

.attr('media',feature.properties.media)

}

});

})

// sort points

var sorted_keys = Object.keys(point_counts).sort(function(a,b){return point_counts[b]-point_counts[a]})

//output={};

output=[];

sorted_keys.forEach(function(name){

output.push({name:point_counts[name]})

//output[d]=point_counts[d]

})

console.log(output)

}

//d3.json("data/BoulderFlood_viewer.json", function(collection) {

d3.json("data/event_viewer.json", function(collection) {

console.log(["collection:",collection])

// all sizes

var sizes = set_sizes();

// build map and creat an svg.

var map = build_map();

// build timeline

var timelineData = convert_to_array(collection,map);

console.log(timelineData);

create_timeline2(timelineData,sizes);

// add point to map

add_points_to_map(collection,map);

// Adjust map & tweet orientation when window is resized.

window.addEventListener('resize', function(event){

//set_values(timelineData,dateParsed);

var sizes = set_sizes();

create_timeline2(timelineData,sizes);

});

// Mouseover event that produces embeded tweet

var circles = d3.selectAll(".tweet_location")

circles.on("mouseover",function(event){

// removes old embeded tweet

var element = d3.select(this)

d3.select("#tweet").selectAll("*").remove();

// adds new embeded tweet

twttr.widgets.createTweet(

element.attr('tweetID'),

document.getElementById('tweet')

);

// remove old photo

d3.select('#photo').remove();

// add new photo

if (element.attr("media") != null){

if (element.attr("media").match("instagram.com") != null){

// embeds instagram photo

d3.select("body").append('img').attr('id','photo')

.attr('src','http://instagram.com/p/' + element.attr("media").split('/')[4] +'/media/?size=l')

.attr('border','2px solid')

.attr('border-radius','25px');

}

var sizes = set_sizes();

});

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