Published
Edited
Dec 17, 2021
Flooding Isolated
zips = FileAttachment("bangkok district.geojson").json()
waterbodies = FileAttachment("bangkok water bodies@1.geojson").json()
floodpoint = FileAttachment("bangkok flood point.geojson").json()
floodgate = FileAttachment("bangkok flood gate.geojson").json()
wasteQ = FileAttachment("Quantity Waste.geojson").json()
wasteC = FileAttachment("Waste Center.geojson").json()
housing = FileAttachment("community housing.geojson").json()
stream = FileAttachment("Stream Selection.geojson").json()
river = FileAttachment("River Outline.geojson").json()
river2 = FileAttachment("River Outline 2.geojson").json()
waterQ = FileAttachment("Water Quality.geojson").json()
leveltwo = FileAttachment("level_two.geojson").json()
levelfour = FileAttachment("level_four.geojson").json()
levelone = FileAttachment("level_one.geojson").json()
levelthree = FileAttachment("level_three.geojson").json()
river5 = FileAttachment("river 5.geojson").json()
d3 = require("d3@6")
chart2 =
Plot.plot({
color: {
type: "sequential",
range: ["rgb(195, 215, 225)", "rgb(25,117,164)"],
interpolate: "hcl" // uses d3.interpolateHcl
},
marks: [
Plot.cell([10, 50, 100, 200], {x: d => d, fill: d => d})
]
})
chart = {
const width = 960,
height = 900;
const svg = d3.create("svg")
.attr("viewBox", [-60, 0, width, height]);
// Use Mercator projection
var projection = d3
.geoMercator()
.fitSize([width - 60, height - 60], zips);
var path = 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 path6 = d3.geoPath().projection(projection);
var path7 = d3.geoPath().projection(projection);
var g = svg.append("g").attr("id", "paths");
g.selectAll("path") //d3 geopath
//svg
//.selectAll('path')
.data(zips.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", path) //The d attribute defines a path to be drawn, only applies to appended elements
.style("fill", "white")
.style('fill-opacity','.25')
.style("stroke-width", "1")
.style("stroke", "#ccc")
//insert flooding into map
g.selectAll("path4") //d3 geopath
//svg
//.selectAll('path')
.data(leveltwo.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", path) //The d attribute defines a path to be drawn, only applies to appended elements
.style("fill", "rgb(25,117,164)")
.style('fill-opacity','.3')
.style("stroke-width", "0")
.style("stroke", "ccc")
g.selectAll("path5") //d3 geopath
//svg
//.selectAll('path')
.data(levelthree.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", path) //The d attribute defines a path to be drawn, only applies to appended elements
.style("fill", "rgb(25,117,164)")
.style('fill-opacity','.55')
.style("stroke-width", "0")
.style("stroke", "ccc")
g.selectAll("path6") //d3 geopath
//svg
//.selectAll('path')
.data(levelone.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", path) //The d attribute defines a path to be drawn, only applies to appended elements
.style("fill", "rgb(25,117,164)")
.style('fill-opacity','.15')
.style("stroke-width", "0")
.style("stroke", "ccc")
g.selectAll("path7") //d3 geopath
//svg
//.selectAll('path')
.data(levelfour.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", path) //The d attribute defines a path to be drawn, only applies to appended elements
.style("fill", "rgb(25,117,164)")
.style('fill-opacity','.8')
.style("stroke-width", "0")
.style("stroke", "ccc")
g.selectAll("path3") //d3 geopath
//svg
//.selectAll('path')
.data(river5.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", path) //The d attribute defines a path to be drawn, only applies to appended elements
.style("fill", "rgb(22, 71, 164)")
.style('fill-opacity','.8')
.style("stroke-width", "1")
.style("stroke", "black")
//insert floodpoints into map
g.selectAll("circle") //d3 geopath
//svg
//.selectAll('path')
.data(floodpoint.features) //get data to define path
.enter() //there are more data than elements, this selects them
.append("circle") //appends path to data
.attr('cx',function(d) {return path.centroid(d)[0]})
.attr("cy", function(d) {return path.centroid(d)[1]})
.attr('r',3)
.attr("fill", "white")
.style('fill-opacity','1')
//insert floodgates into map
g.selectAll("circle") //d3 geopath
//svg
//.selectAll('path')
.data(floodgate.features) //get data to define path
.enter() //there are more data than elements, this selects them
.append("circle") //appends path to data
.attr('cx',function(d) {return path.centroid(d)[0]})
.attr("cy", function(d) {return path.centroid(d)[1]})
.attr('r',3)
.attr("fill", "orange")
.style('fill-opacity','0.85')
//insert streams into map
g.selectAll("path") //d3 geopath
//svg
//.selectAll('path')
.data(stream.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", path) //The d attribute defines a path to be drawn, only applies to appended elements
.style("fill", "blue")
.style('fill-opacity','0')
.style("stroke-width", "0.6")
.style("stroke", "rgb(22, 71, 164)")
.on('mouseover', addBox)
.on('mouseout', removeBox)
//add stream tool tip
var tooltip = svg.append("g");
function addBox(event, d) {
var centroid = path.centroid(d);
tooltip.call(
callout,
`${d.properties.STREAM_}
${d.properties.LENGTH}`
);
tooltip.attr("transform", "translate(" + centroid + ")");
}
function removeBox(event, d) {
tooltip.call(callout,null)
}
return svg.node();
}
//yourData.map((element, index) => {
//})
callout = (g, value) => {
if (!value) return g.style("display", "none");
g
.style("display", null)
.style("pointer-events", "none")
.style("font", "10px sans-serif");
const path = g.selectAll("path")
.data([null])
.join("path")
.attr("fill", "white")
.attr("stroke", "black");
const text = g.selectAll("text")
.data([null])
.join("text")
.call(text => text
.selectAll("tspan")
.data((value + "").split(/\n/))
.join("tspan")
.attr("x", 0)
.attr("y", (d, i) => `${i * 1.1}em`)
.style("font-weight", (_, i) => i ? null : "bold")
.text(d => d));
const {x, y, width: w, height: h} = text.node().getBBox();
text.attr("transform", `translate(${-w / 2},${15 - y})`);
path.attr("d", `M${-w / 2 - 10},5H-5l5,-5l5,5H${w / 2 + 10}v${h + 20}h-${w + 20}z`);
}
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.