D3 Activity 1 (complete) / Interactive Info Vis

UW iSchool Course INFO 474: focused on designing and building visualizations to better understand and communicate about pressing issues.

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Jan 8, 2021

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sample_svg = {

// Make and svg

const svg = d3.create("svg").attr("width", width);

// Append some shapes

const circle = svg

.append("circle")

.attr("cx", 100)

.attr("cy", 100)

.style("fill", "blue")

.attr("r", 10)

.style("opacity", .5);

const circle2 = svg

.append("circle")

.attr("cx", 100)

.attr("cy", 50)

.style("fill", "red")

.attr("r", 10)

.style("opacity", .5);

// Return the dom node to show

return svg.node();

}

// Show a preview table

render_data_table(penguins)

// Max. body mass

max_body_mass = d3.max(penguins, d => +d.body_mass_g)

// Max. body mass

min_body_mass = d3.min(penguins, d => +d.body_mass_g)

// If you want to get both at once

extent_mass = d3.extent(penguins, d => +d.body_mass_g)

// Create the scale

scale = d3

.scaleLinear()

.domain([min_body_mass, max_body_mass])

.range([0, width])

margin = ({left:30, right:30})

scale_with_margin = d3

.scaleLinear()

.domain(extent_mass)

.range([margin.left, width - margin.right])

// Displaying axis with JS

{

const svg = d3.create("svg").attr("width", width);

const axis = d3.axisBottom().scale(scale_with_margin);

const g = svg

.append("g")

.attr("transform", "translate(0, 50)")

.call(axis);

return svg.node();

}

// Displaying axis with JS

{

const svg = d3.create("svg").attr("width", width);

const axis = d3.axisBottom().scale(scale_with_margin);

const g = svg

.append("g")

.attr("transform", "translate(0, 50)")

.call(axis);

penguins

.filter(d => !isNaN(+d.body_mass_g)) // filter out missing data

.map(d => {

svg

.append("circle")

.attr("r", 3)

.attr("cx", scale_with_margin(d.body_mass_g))

.style("opacity", .3)

.attr("cy", 10);

});

return svg.node();

}

import { penguins } from "@enjalot/palmer-penguins"

data = d3.csv(await FileAttachment("data.csv").url())

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