chart = {
const width = 960,
height = 900;
const svg = d3.create("svg")
.attr("viewBox", [-175, -50, width+200, height+100]);
var projection = d3
.geoMercator()
.fitSize([width - 50, height - 50], bbox);
var path1 = d3.geoPath().projection(projection);
var path2 = d3.geoPath().projection(projection);
var path3 = d3.geoPath().projection(projection);
var path4 = d3.geoPath().projection(projection);
var path5 = d3.geoPath().projection(projection);
var g = svg.append("g").attr("id", "paths");
g.selectAll("path4")
.data(parks.features)
.enter()
.append("path")
.attr('class','outlines')
.attr("d", path4)
.style("fill", "green")
.style("fill-opacity", ".3")
.style('stroke-opacity','.4')
.style("stroke-width", '.5')
.style("stroke", "rgb(0,0,0)")
g.selectAll("path2")
.data(subLns.features)
.enter()
.append("path") //appends path to data
.attr('class','outlines')
.attr("d", path2) //The d attribute defines a path to be drawn, only applies to appended elements
.style("fill", "none")
.style('stroke-opacity','1')
.style("stroke-width", '.75')
.style("stroke", "rgb(100,100,100)")
g.selectAll("path3") //d3 geopath
.data(bldgs.features) //get data to define path
.enter() //there are more data than elements, this selects them
.append("path") //appends path to data
.attr('class','outlines')
.attr("d", path3) //The d attribute defines a path to be drawn, only applies to appended elements
.style("fill", "rgb(240,240,240)")
.style("fill-opacity", ".5")
.style('stroke-opacity','.4')
.style("stroke-width", '.5')
.style("stroke", "rgb(0,0,0)")
//subway stops
var c = svg.selectAll("circle") //d3 geopath
.data(subSts.features)
.enter() //there are more data than elements, this selects them
.append("circle") //appends path to data
.attr("cx", function(d) {return path1.centroid(d)[0]})
.attr("cy", function(d) {return path1.centroid(d)[1]})
.attr('r',3)
.attr('fill','black')
.style('fill-opacity','1')
//chargers circles
c.enter().append('circle')//use this code for the second and any subsequent circle adds///***
.data(chargers)///***
.enter() //there are more data than elements, this selects them
.append("circle") //appends path to data
.attr("cx", function(d) {return projection([d.long,d.lat])[0]})///***
.attr("cy", function(d) {return projection([d.long,d.lat])[1]})///***
.attr('r',3)
.attr('fill','cyan')
.style('fill-opacity','1')
.style('stroke-width','1')
.style('stroke','black')
//add citibike circles
c.enter().append('circle') //d3 geopath
.data(bikes)
.enter() //there are more data than elements, this selects them
.append("circle") //appends path to data
.attr('class','cb')
.attr("cx", function(d) {return projection([d.long,d.lat])[0]})
.attr("cy", function(d) {return projection([d.long,d.lat])[1]})
.attr('r',4)
.attr('fill','white')
.style('fill-opacity','1')
.style('stroke','black')
.style('stroke-width','.75')
.on('mouseover',bikeText)
.on('mouseout',removeText)
//subway text
var t = svg.selectAll("text")//creating a variable t and adding all text objects to it
.data(subSts.features)
.enter() //there are more data than elements, this selects them
.append("text") //appends path to data
.attr("x", function(d) {return path1.centroid(d)[0]})
.attr("y", function(d) {return path1.centroid(d)[1]-5})
.attr('font-family','helvetica')
.attr('font-size','.5em')
.attr('font-weight','400')
.style("fill", "rgb(110,110,110)")
.attr('text-anchor','middle')
.text(function(d) {return d.properties.name})
//add charger annotation
t.enter().append('text')//use this for second and all subsequent text adds
.data(chargers)
.enter() //there are more data than elements, this selects them
.append("text") //appends path to data
.attr("x", '-10')
.attr("y", function(d,i){return i*30})///****
.attr('font-family','helvetica')
.attr('font-size','.55em')
.attr('font-weight','bold')
.style("fill", "rgb(0,0,0)")
.attr('text-anchor','end')
.text(function(d) {return d.name})//****
t.enter().append('text')//use this for second and all subsequent text adds
.data(chargers)
.enter() //there are more data than elements, this selects them
.append("text") //appends path to data
.attr("x", '-10')
.attr("y", function(d,i){return i*30+10})///****
.attr('font-family','helvetica')
.attr('font-size','.55em')
.attr('font-weight','400')
.style("fill", "rgb(100,100,100)")
.attr('text-anchor','end')
.text(function(d) {return d.description})//****
//annotation lines for chargers
t.enter().append('line')
.data(chargers)
.enter()
.append("line")
.attr('x1','-10')
.attr('y1',function(d,i){return i*30-3})
.attr('x2',function(d) {return projection([d.long,d.lat])[0]})
.attr('y2',function(d,i){return i*30-3})
.attr('stroke-width','1')
.attr('stroke-dasharray','4,4')
.attr('stroke','rgb(100,100,100)')
t.enter().append('line')
.data(chargers)
.enter()
.append("line")
.attr('x1',function(d) {return projection([d.long,d.lat])[0]})
.attr('y1',function(d,i){return i*30-3})
.attr('x2',function(d) {return projection([d.long,d.lat])[0]})
.attr('y2',function(d) {return projection([d.long,d.lat])[1]})
.attr('stroke-width','1')
.attr('stroke-dasharray','4,4')
.attr('stroke','rgb(100,100,100)')
//draw site outline
g.selectAll("path5") //d3 geopath
.data(site.features) //get data to define path
.enter() //there are more data than elements, this selects them
.append("path") //appends path to data
.attr('class','outlines')
.attr("d", path5) //The d attribute defines a path to be drawn, only applies to appended elements
.style("fill", "none")
.style("fill-opacity", "1")
.style('stroke-opacity','1')
.style("stroke-width", '2')
.style("stroke", "rgb(0,0,0)")
.attr('stroke-dasharray','12 12')
//add labels to site line
svg
.append("text")
.attr('class','title')
.attr('x','400')
.attr('y','500')
.attr('font-family','helvetica')
.attr('font-size','1em')
.attr('font-weight','bold')
.style("fill", "rgb(0,0,0)")
.text('Times Square')
svg
.append("text")
.attr('class','title')
.attr('x','400')
.attr('y','517')
.attr('font-family','helvetica')
.attr('font-size','.7em')
.attr('font-weight','200')
.style("fill", "rgb(0,0,0)")
.text('The Future of Movement')
svg
.append("text")
.attr('class','title')
.attr('x','-75')
.attr('y','700')
.attr('font-family','helvetica')
.attr('font-size','.7em')
.attr('font-weight','200')
.style("fill", "rgb(0,0,0)")
.attr('text-anchor','middle')
.text('Citi Bike Stations')
svg
.append("line")
.attr('x1','400')
.attr('y1','495')
.attr('x2','378')
.attr('y2','495')
.attr('stroke-width','1.5')
.attr('stroke','rgb(0,0,0)')
svg
.append("line")
.attr('x1','-120')
.attr('y1','708')
.attr('x2','-10')
.attr('y2','708')
.attr('stroke-width','1.5')
.attr('stroke','rgb(0,0,0)')
function bikeText(event,d){
d3.select(this).attr('fill','black')
svg.append('text')//use this for second and all subsequent text add
.attr("x", '-75')
.attr("y", '720')
.attr('class','bikeStop')
.attr('font-family','helvetica')
.attr('font-size','.55em')
.attr('font-weight','bold')
.style("fill", "rgb(0,0,0)")
.attr('text-anchor','middle')
.text(d.name)
svg.append('text')//use this for second and all subsequent text add
.attr("x", '-75')
.attr("y", '730')
.attr('class','bikeStop')
.attr('font-family','helvetica')
.attr('font-size','.55em')
.attr('font-weight','400')
.style("fill", "rgb(50,50,50)")
.attr('text-anchor','middle')
.text(d.description)
svg.append("line")
.attr('x1','-10')
.attr('y1','720')
.attr('class','bikeLine')
.attr('x2',projection([d.long,d.lat])[0])
.attr('y2','720')
.attr('stroke-width','1')
.attr('stroke-dasharray','4,4')
.attr('stroke','rgb(100,100,100)')
svg.append("line")
.attr('x1',projection([d.long,d.lat])[0])
.attr('y1','720')
.attr('class','bikeLine')
.attr('x2',projection([d.long,d.lat])[0])
.attr('y2',projection([d.long,d.lat])[1])
.attr('stroke-width','1')
.attr('stroke-dasharray','4,4')
.attr('stroke','rgb(100,100,100)')
}
function removeText(event,d){//remove citi bike address information
d3.selectAll('text.bikeStop').remove()
d3.selectAll('line.bikeLine').remove()
d3.selectAll('circle.cb').attr('fill','white')
}
scaleBar
.projection(projection)
.size([width, height]);
svg.append("g")
.call(scaleBar);
return svg.node();
}