Published
Edited
Jul 26, 2020
2 stars
25 Apr 2020: First Bar Chart26 Apr 2020: Bar Chart Revisited27 Apr 2020: Finalising the Bar Chart28 Apr 2020: What Else I Learned From That Bar Chart29 Apr 2020: Setting up Observable30 Apr 2020: What Else Can I Do With This Bar Chart?1 May 2020: Formatting Numbers and Sorting a Bar Chart2 May 2020: Exploring More of Observable and Vega-Lite3 May 2020: Exploring More Vega-Lite4 May 2020: Vega-Lite Scatterplot and Heat Map, and More Posts on Getting Started With Data Viz5 May 2020: Vega-Lite Scatterplot continued6 May 2020: D3 Scatterplot7 May 2020: D3 Scatterplot with Legends8 May 2020: D3 Scatterplot with Tooltips9 May 2020: D3 Scatterplot with Voronoi Tooltips10 May 2020: Line charts11 May 2020: Vega-Lite Line Charts12 May 2020: D3 Line Chart13 May 2020: D3 Multi-Line Chart14 May 2020: D3 Multi-Line Chart with Annotations15 May 2020: D3 Multi-Line Chart with Shading16 May 2020: Donut Charts and Pie Charts17 May 2020: Pie Charts in Vega-Lite18 May 2020: Donut Chart in Vega-Lite19 May 2020: Donut Chart in D320 May 2020: Donut Chart in D3 with Footnotes21 May 2020: Donut Chart in D3 with Tooltips22 May 2020: Area Charts, Stacked Area Charts, Stream graphs and Ridgelines23 May 2020: Area Charts in Vega-Lite and CSV Parsing24 May 2020: Area Charts in D3 with Tooltips25 May 2020: Cumulative Area Chart in D3 with Tooltips26 May 2020: Histograms and Density Plots27 May 2020: Exploratory Histogram28 May 2020: D3 Histogram29 May 2020: D3 Histogram Styling30 May 2020: Data Tables31 May 2020: Wikipedia Data Tables1 June 2020: Wrangling Wikipedia List Data and Summary Statistics2 June 2020: Treemaps, Dendrograms, Sunbursts, Circle Packing, and Tree Diagrams3 June 2020: D3 Tree Diagram and D3 Hierarchy4 June 2020: D3 Clustered Dendrogram5 June 2020: D3 Radial Tidy Tree and Radial Dendrogram6 June 2020: D3 Collapsible Tidy Tree7 June 2020: D3 Collapsible Tidy Tree (Improved)8 June 2020: Designing for Touch Devices: Drag, Click, Hover, Focus, Scroll, Zoom, Delaunay, Voronoi9 June 2020: Designing for Small Screens: Responsive Data Viz, Resizing, and Aspect Ratios10 June 2020: Typography for Data Viz11 June 2020: Color in Data Viz12 June 2020: Styled Bar Chart13 June 2020: Accessible Bar Chart and Accessible Data Table14 June 2020: Line Chart with Points and Bar Chart15 June 2020: Network Diagrams16 June 2020: D3 Disjoint Force-Directed Graph17 June 2020: D3 Bar Chart with Textured Line18 June 2020: D3 Bar Chart Transitions19 June 2020: D3 Bar Chart Transitions (Improved)20 June 2020: Sketchy D3 Bar Chart Style21 June 2020: Brushing to Filter and Zoom Using D3 Brush22 June 2020: D3 Bar Chart Brush (Work In Progress)23 June 2020: Linear Regression24 June 2020: Hatched Pattern Effect Bar Chart25 June 2020: Checkerboard Fill Effect Bar Chart26 June 2020: D3 Bar Chart Brush27 June 2020: Using Textures28 June 2020: Charting Typing Speed: Data and Exploration29 June 2020: Charting Typing Speed: Data and Exploration with Vega-Lite30 June 2020: Charting Typing Speed: Data and Exploration with Vega-Lite and Datawrapper1 July 2020: Charting Typing Speed: Data and Exploration with Vega-Lite Bubble Chart2 July 2020: Charting Typing Scores: Data and Exploration with Vega-Lite3 July 2020: Journal Updates and User Testing4 July 2020: About Heatmaps5 July 2020: Data Wrangling for a Heatmap6 July 2020: D3 Heatmap Without Sorting7 July 2020: D3 Heatmap With Sorting8 July 2020: D3 Heatmap with Legend9 July 2020: D3 Heatmap Styled10 July 2020: About Bubble Charts11 July 2020: D3 Bubble Chart12 July 2020: D3 Bubble Chart with Labels on Hover13 July 2020: D3 Bubble Chart with Voronoi Labels on Hover14 July 2020: D3 Bubble Chart with Voronoi Tooltips15 July 2020: About Population Pyramids16 July 2020: Data Wrangling for Population Pyramids17 July 2020: D3 Population Pyramid18 July 2020: About Sankey, Alluvial, Parallel Sets, and Parallel Coordinates19 July 2020: Data Wrangling for a Sankey Diagram20 July 2020: D3 Sankey Diagram21 July 2020: D3 Sankey Diagram with Hovers and Percentages22 July 2020: D3 Parallel Coordinates23 July 2020: D3 Parallel Coordinates (Updates)24 July 2020: About Slope Charts25 July 2020: Data Wrangling for a Slope Chart27 July 2020: D3 Slope Chart with Color28 July 2020: D3 Slope Chart with Highlight Color and Gray Context Lines29 July 2020: D3 Slope Chart Small Multiples (Work in Progress)30 July 2020: D3 Slope Chart Small Multiples31 July 2020: About Dumbbell or Connected Dot Plots1 August 2020: D3 Dumbbell Plot2 August 2020: 100 Days of Data VizAbout TimelinesBuilding TimelinesAbout SparklinesAbout Circle PackingD3 Circle PackingD3 Circle Packing with Data Wrangling and Interactive GroupingSort by arbitrary arrayAbout Choropleth MapsAbout Map Data: GeoJSON and TopoJSON with D3
26 July 2020: D3 Slope Chart
n = data.columns.length
function dodge(positions, separation = 12, maxiter = 10, maxerror = 1e-1) {
positions = Array.from(positions);
let n = positions.length;
if (!positions.every(isFinite)) throw new Error("invalid position");
if (!(n > 1)) return positions;
let index = d3.range(positions.length);
for (let iter = 0; iter < maxiter; ++iter) {
index.sort((i, j) => d3.ascending(positions[i], positions[j]));
let error = 0;
for (let i = 1; i < n; ++i) {
let delta = positions[index[i]] - positions[index[i - 1]];
if (delta < separation) {
delta = (separation - delta) / 2;
error = Math.max(error, delta);
positions[index[i - 1]] -= delta;
positions[index[i]] += delta;
}
}
if (error < maxerror) break;
}
return positions;
}
line = d3.line()
.x((d, i) => x(i))
.y(y)
x = d3.scalePoint()
.domain(d3.range(n))
.range([params.margin.left, params.svg.width - params.margin.right])
.padding(0.5)
y = d3.scaleLinear()
.domain(d3.extent(data.flatMap(d => d.visits)))
.range([params.svg.height - params.margin.bottom, params.margin.top])
formatNumber = y.tickFormat(100)
mutable params = {
let output = {};
output["svg"] = {
"width": 954,
"height": 768
};
output["margin"] = {
"top": 72,
"right": 24,
"bottom": 72,
"left": 24
};
output["padding"] = {
"top": 4,
"right": 12,
"bottom": 4,
"left": 12
};
output["plot"] = {
"x": output["margin"]["left"],
"y": output["margin"]["top"],
"width": output["svg"]["width"] - output["margin"]["left"] - output["margin"]["right"],
"height": output["svg"]["height"] - output["margin"]["top"] - output["margin"]["bottom"]
};
return output;
}
data = {
const rowConversionFunction = ({
"Name": name,
"Visits": visits
}) => ({
name,
visits: +visits
});
const data5Jul = await d3.tsvParse(tsv5Jul, rowConversionFunction);
const data25Jul = await d3.tsvParse(tsv25Jul, rowConversionFunction);
let dataObjectTarget = [];
data25Jul.forEach(after => {
if (data5Jul.some(before => before.name === after.name)) {
dataObjectTarget.push({
name: after.name,
visits: [data5Jul.find(before => before.name === after.name).visits, after.visits]
})
}
});
dataObjectTarget = dataObjectTarget.sort((a, b) => {
return b.visits[1] - a.visits[1];
}).slice(0,5);
// dataObjectTarget = dataObjectTarget.sort((a, b) => {
// return b.visits[1] - a.visits[1];
// }).slice(-5);
const extraPropertiesSource = {
columns: ["5 July 2020", "25 July 2020"],
xAxisLabel: "Time",
yAxisLabel: "Visits",
observation: "",
title: "Neko Atsume cat visits",
};
return Object.assign(dataObjectTarget, extraPropertiesSource);
}
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