Public
Edited
Sep 15, 2023
Insert cell
# base map - UD Fall 2023
Insert cell
d3 = require("d3@6")
Insert cell
chart = {
const width = 960,
height = 900;
const svg = d3.create("svg")
.attr("viewBox", [50, 50, width-150, height-150]);

// Use Mercator projection
var projection = d3
.geoMercator()
.fitSize([width - 50, height - 50], b);

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(subwayline.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", '.75')
.style("stroke", "rgb(0,0,0)")

g.selectAll("path3") //d3 geopath
.data(buildingoutline.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", '.15')
.style("stroke", "rgb(0,0,0)")

var c = svg.selectAll("circle") //use this line the first time we create a circle
.data(library.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]})//we use a function in order to draw ALL of the fountains - loop through the fountains
.attr("cy", function(d) {return path1.centroid(d)[1]})
.attr('r',3)
.style('stroke','black')
.style('stroke-width','1')
.attr('fill','cyan')
.style('fill-opacity','1')
.on('mouseover',LibraryText)
.on('mouseout',removeLibraryText)

function LibraryText(event,d){
//console.log(d)

svg
.append("text")
.attr('x','100')
.attr('y','220')
.attr('class','library_position')
.style('font-family','helvetica')
.style('font-size','10px')
.style('font-weight','light')//use 'fill' to change color
.text(d.properties.Position)

var wrap = svg.selectAll("text.library_position")
.each(function(d, i) { wrap_text(d3.select(this), 75) });//control how many pixels wide our text block can be

svg
.append("line")
.attr('x1','120')
.attr('y1','180')
.attr('x2', path1.centroid(d)[0])
.attr('y2', path1.centroid(d)[1])
.attr('class','fLine')
.style('stroke-width', '1')
.style("stroke", "rgb(0,0,0)")
.style('stroke-dasharray', '4')

p.enter().append("polyline") //use this line the first time we create a polyline
.data(text)
.enter() //there are more data than elements, this selects them
.append("polyline") //appends path to data
.attr("points", function(d) {return d})//we use a function in order to draw ALL of the fountains - loop through the fountains
.attr("class", 'book')
.style('fill','black')
.style('stroke','black')
.style('stroke-width','.5')
}//this is where LibraryText function ends

function removeLibraryText(){
d3.selectAll('text.library_position').remove()//geometry type, then class name
d3.selectAll('line.fLine').remove()
d3.selectAll('polyline.book').remove()
}

c.enter().append("circle") // use this line everytime after the first time we create a circle
.data(gallery.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)
.style('stroke','black')
.style('stroke-width','1')
.attr('fill','pink')
.style('fill-opacity','1')
.on('mouseover',galleryText)
.on('mouseout',removeGalleryText)

function galleryText(event,d){
//console.log(d)

svg
.append("text")
.attr('x','120')
.attr('y','200')
.attr('class','Gallery_position')
.style('font-family','helvetica')
.style('font-size','10px')
.style('font-weight','light')//use 'fill' to change color
.text(d.properties.Position)

var wrap = svg.selectAll("text.Gallery_position")
.each(function(d, i) { wrap_text(d3.select(this), 75) });//control how many pixels wide our text block can be

svg
.append("line")
.attr('x1','120')
.attr('y1','190')
.attr('x2', path1.centroid(d)[0])
.attr('y2', path1.centroid(d)[1])
.attr('class','fLine')
.style('stroke-width', '1')
.style("stroke", "rgb(0,0,0)")
.style('stroke-dasharray', '4')

p.enter().append("polyline") //use this line the first time we create a polyline
.data(text2)
.enter() //there are more data than elements, this selects them
.append("polyline") //appends path to data
.attr("points", function(d) {return d})//we use a function in order to draw ALL of the fountains - loop through the fountains
.attr("class", 'artwork')
.style('fill','none')
.style('stroke','black')
.style('stroke-width','.5')
}//this is where GalleryText function ends

function removeGalleryText(){
d3.selectAll('text.Gallery_position').remove()//geometry type, then class name
d3.selectAll('line.fLine').remove()
d3.selectAll('polyline.artwork').remove()
}


c.enter().append("circle") //d3 geopath
.data(substop.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')

svg
.append("text")
.attr('x','100')
.attr('y','95')
.style('font-family','helvetica')
.style('font-size','12px')
.style('font-weight','bold')//use 'fill' to change color
.text('Lu_Zexuan_Manhattan_NY_Personal Map')

svg
.append("text")
.attr('x','100')
.attr('y','120')
.style('font-family','helvetica')
.style('font-size','10px')
.style('font-weight','light')//use 'fill' to change color
.text('Fall_2023_Urban Data')

svg
.append("text")
.attr('x','310')
.attr('y','380')
.style('font-family','helvetica')
.style('font-size','12px')
.style('font-weight','bold')//use 'fill' to change color
.text('Harbs')

svg
.append("text")
.attr('x','730')
.attr('y','295')
.style('font-family','helvetica')
.style('font-size','12px')
.style('font-weight','bold')//use 'fill' to change color
.text('CheLi')

svg
.append("text")
.attr('x','740')
.attr('y','270')
.style('font-family','helvetica')
.style('font-size','12px')
.style('font-weight','bold')//use 'fill' to change color
.text('Mountain House')

svg
.append("text")
.attr('x','420')
.attr('y','240')
.style('font-family','helvetica')
.style('font-size','12px')
.style('font-weight','bold')//use 'fill' to change color
.text('New York University')

svg
.append("text")
.attr('x','460')
.attr('y','380')
.style('font-family','helvetica')
.style('font-size','12px')
.style('font-weight','bold')//use 'fill' to change color
.text('Soho')

svg
.append("text")
.attr('x','670')
.attr('y','280')
.style('font-family','helvetica')
.style('font-size','12px')
.style('font-weight','bold')//use 'fill' to change color
.text('Gong Cha')

svg
.append("line")
.attr('x1','100')
.attr('y1','104')
.attr('x2','200')
.attr('y2','104')
.style("stroke-width", '1')
.style("stroke", "rgb(0,0,0)")

svg
.append("text")
.attr('x','100')
.attr('y','180')
.style('font-family','helvetica')
.style('font-size','12px')
.style('font-weight','bold')//use 'fill' to change color
.text('Library')

svg
.append("text")
.attr('x','100')
.attr('y','200')
.style('font-family','helvetica')
.style('font-size','12px')
.style('font-weight','bold')//use 'fill' to change color
.text('Gallery')

svg
.append("text")
.attr('x','100')
.attr('y','220')
.style('font-family','helvetica')
.style('font-size','12px')
.style('font-weight','bold')//use 'fill' to change color
.text('The meaningful Place')

var p = svg.selectAll("polyline") //use this line the first time we create a polyline
.data(text1)
.enter() //there are more data than elements, this selects them
.append("polyline") //appends path to data
.attr("points", function(d) {return d})//we use a function in order to draw ALL of the fountains - loop through the fountains
.style('fill','grey')
.style('stroke','black')
.style('stroke-width','2')
return svg.node();
}
Insert cell
fountains = FileAttachment("fountains.geojson").json()
Insert cell
b = FileAttachment("b.geojson").json()
Insert cell
buildingoutline = FileAttachment("buildingoutline.geojson").json()
Insert cell
library = FileAttachment("library.geojson").json()
Insert cell
subwayline = FileAttachment("Subwayline.geojson").json()
Insert cell
Insert cell
substop = FileAttachment("substop.geojson").json()
Insert cell
Insert cell
personal_spots = d3.csv(personal_spots_link,d3.autoType)
Insert cell
import { wrap_text, wrap_text_nchar } from "@ben-tanen/svg-text-and-tspan-word-wrapping"
Insert cell
text = FileAttachment("text.txt").text()
Insert cell
text2 = FileAttachment("text2@1.txt").tsv({array:true})
Insert cell
text1 = FileAttachment("text1.txt").tsv({array:true})//end text file line with this code
Insert cell

One platform to build and deploy the best data apps

Experiment and prototype by building visualizations in live JavaScript notebooks. Collaborate with your team and decide which concepts to build out.
Use Observable Framework to build data apps locally. Use data loaders to build in any language or library, including Python, SQL, and R.
Seamlessly deploy to Observable. Test before you ship, use automatic deploy-on-commit, and ensure your projects are always up-to-date.
Learn more