base map - UD Spring 2024 1/24 - nick's version
d3 = require("d3@6")
chart = {
const width = 960,
height = 900;
const svg = d3.create("svg")
.attr("viewBox", [50, 50, width-50, height-50]);
// Use Mercator projection
var projection = d3
.geoMercator()
.fitSize([width - 50, height - 50], bbox_01);
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 g = svg.append("g").attr("id", "paths");
g.selectAll("path2") //d3 geopath
.data(helena_roads.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", 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", '.35')
.style("stroke", "rgb(200,200,200)")
g.selectAll("path3") //d3 geopath
.data(trails.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", "none")
.style("fill-opacity", ".5")
.style('stroke-opacity','1')
.style("stroke-width", '.4')
.style("stroke", "rgb(0,0,0)")
g.selectAll("path4") //d3 geopath
.data(streams.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", "none")
.style("fill-opacity", ".5")
.style('stroke-opacity','1')
.style("stroke-width", '.5')
.style("stroke", "rgb(0,0,100)")
var c = svg.selectAll("circle") //d3 geopath
.data(steak)
.enter() //there are more data than elements, this selects them
.append("circle") //appends path to data
.attr('class','steakPts')
.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)
.style('fill','black')
.style('fill-opacity','1')
svg
.append('line')
//.attr('class','steakLine')
.attr('x1','125')
.attr('y1','725')
.attr('x2','400')
.attr('y2','725')
.style('stroke','black')
.style('stroke-width','1')
.style('stroke-dasharray', '4,4,8,8')
var p = svg.selectAll("polyline")
.data(barn_test)
.enter() //there are more data than elements, this selects them
.append("polyline")
.attr('points',function(d){return d})
.attr('transform','translate(200,300)')
.style('fill','white')
.style('stroke','black')
.style('stroke-width','.5')
//.style('stroke-dasharray', '4,4,8,8')
p.enter().append("polyline")
.data(icon_list)
.enter() //there are more data than elements, this selects them
.append("polyline")
.attr('class','icon')
.attr('points',function(d){return d.pts})
.attr('transform',function(d){return 'translate('+projection([d.data.Long,d.data.Lat])[0]+','+projection([d.data.Long,d.data.Lat])[1]+')'})
.style('fill',fillColor)
.style('stroke','black')
.style('stroke-width','.5')
.on('mouseover',steakInfo)//listens for a mousover, and calls function
.on('mouseout',steakInfoOut)
function fillColor(d,i){
var color = 'rgb(0,0,0)'
if(d.data.Rating==5){color = 'rgb(255,255,0)'
console.log("match")}
if(d.data.Rating==4){color = 'rgb(215,215,0)'}
if(d.data.Rating==3){color = 'rgb(175,175,0)'}
if(d.data.Rating==2){color = 'rgb(135,135,0)'}
if(d.data.Rating==1){color = 'rgb(95,95,0)'}
return color
}
function steakInfo(event,d){
d3.select(this).style('fill','red')
svg
.append('text')
.attr('class','steakText')
.attr('x','150')
.attr('y','700')
.style("font-family", "Helvetica")
.style('font-size','.75em')
.style('fill','rgb(0,200,0)')
.style('text-anchor','start')
.text(d.data.Name)
svg
.append('line')
.attr('class','steakLine')
.attr('x1','125')
.attr('y1','725')
.attr('x2','400')
.attr('y2','725')
.style('stroke','black')
.style('stroke-width','1')
var ratingList = []
if(d.data.Rating==2){ratingList = [exclamation,exclamation]}
if(d.data.Rating==3){ratingList = [exclamation,exclamation,exclamation]}
if(d.data.Rating==4){ratingList = [exclamation,exclamation,exclamation,exclamation]}
if(d.data.Rating==5){ratingList = [exclamation,exclamation,exclamation,exclamation,exclamation]}
p.enter().append("polyline")
.data(ratingList)
.enter() //there are more data than elements, this selects them
.append("polyline")
.attr('class','icon_rating')
.attr('points',function(d){return d})
.attr('transform',function(d,i){return 'translate('+(150+(i*35))+',200)'})
.style('fill','black')
.style('stroke','none')
//.style('stroke-width','.5')
}
function steakInfoOut(event,d){
d3.selectAll('polyline.icon').style('fill',fillColor)
d3.selectAll('text.steakText').remove()
d3.selectAll('line.steakLine').remove()
d3.selectAll('polyline.icon_rating').remove()
}
return svg.node();
}
subSts = FileAttachment("sub_stops.geojson").json()
bldgs = FileAttachment("bldgs.geojson").json()
bbox = FileAttachment("site_boundary.geojson").json()
subLns = FileAttachment("subway_lines.geojson").json()
bbox_01 = FileAttachment("bbox_01.geojson").json()
helena_roads = FileAttachment("helena_roads_01.geojson").json()
trails = FileAttachment("trails.geojson").json()
bbox_02 = FileAttachment("bbox_02.geojson").json()
streams = FileAttachment("streams.geojson").json()
steak_link = 'https://docs.google.com/spreadsheets/d/e/2PACX-1vR8X-dzSRwsv4ASzWuzuXPAlKOb43hFdbmvxSKYyvZfWy0hoUUKntEsOZ-Jgfe0hLPG7v-ZFU6HDpuW/pub?output=csv'
exclamation = FileAttachment("exclamation@2.txt").tsv({array:true})
Purpose-built for displays of data
Observable is your go-to platform for exploring data and creating expressive data visualizations. Use reactive JavaScript notebooks for prototyping and a collaborative canvas for visual data exploration and dashboard creation.
