100 lines
2.4 KiB
JavaScript
100 lines
2.4 KiB
JavaScript
/**
|
|
* Makes the first bar chart appear as a staircase.
|
|
*
|
|
* Note: use only the DOM API, not D3!
|
|
*/
|
|
function staircase() {
|
|
// ****** TODO: PART II ******
|
|
}
|
|
|
|
/**
|
|
* Render the visualizations
|
|
* @param error
|
|
* @param data
|
|
*/
|
|
function update(data) {
|
|
// Set up the scales
|
|
let aScale = d3.scaleLinear()
|
|
.domain([0, d3.max(data, d => d.a)])
|
|
.range([0, 150]);
|
|
let bScale = d3.scaleLinear()
|
|
.domain([0, d3.max(data, d => d.b)])
|
|
.range([0, 150]);
|
|
let iScale = d3.scaleLinear()
|
|
.domain([0, data.length])
|
|
.range([0, 110]);
|
|
|
|
|
|
// ****** TODO: PART III (you will also edit in PART V) ******
|
|
|
|
// TODO: Select and update the 'a' bar chart bars
|
|
|
|
// TODO: Select and update the 'b' bar chart bars
|
|
|
|
// TODO: Select and update the 'a' line chart path using this line generator
|
|
|
|
let aLineGenerator = d3.line()
|
|
.x((d, i) => iScale(i))
|
|
.y((d) => aScale(d.a));
|
|
|
|
// TODO: Select and update the 'b' line chart path (create your own generator)
|
|
|
|
// TODO: Select and update the 'a' area chart path using this area generator
|
|
let aAreaGenerator = d3.area()
|
|
.x((d, i) => iScale(i))
|
|
.y0(0)
|
|
.y1(d => aScale(d.a));
|
|
|
|
// TODO: Select and update the 'b' area chart path (create your own generator)
|
|
|
|
// TODO: Select and update the scatterplot points
|
|
|
|
// ****** TODO: PART IV ******
|
|
|
|
}
|
|
|
|
/**
|
|
* Load the file indicated by the select menu
|
|
*/
|
|
function changeData() {
|
|
let dataFile = document.getElementById('dataset').value;
|
|
if (document.getElementById('random').checked) {
|
|
randomSubset();
|
|
}
|
|
else {
|
|
let filename = './data/' + dataFile + '.csv';
|
|
dataset = d3.csv(filename, function(d) {
|
|
// Convert each data item to a number.
|
|
return { a:+d.a, b:+d.b };
|
|
})
|
|
// After reading the entire dataset, call update().
|
|
.then(update);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Load the file indicated by the select menu, and then slice out a random chunk before passing the data to update()
|
|
*/
|
|
function randomSubset() {
|
|
let dataFile = document.getElementById('dataset').value;
|
|
if (document.getElementById('random').checked) {
|
|
let filename = './data/' + dataFile + '.csv';
|
|
dataset = d3.csv(filename, function(d) {
|
|
// Convert each data item to a number.
|
|
return { a:+d.a, b:+d.b };
|
|
})
|
|
.then(function(data) {
|
|
let subset = [];
|
|
for (let d of data) {
|
|
if (Math.random() > 0.5) {
|
|
subset.push(d);
|
|
}
|
|
}
|
|
update(subset);
|
|
});
|
|
}
|
|
else {
|
|
changeData();
|
|
}
|
|
}
|