var csv = `Name,Category1,Category2
1,1,1
2,1,2
3,1,1
4,2,2
5,3,1
6,1,4
7,5,5
8,1,5
9,2,4
10,3,3
11,4,4
12,4,5
13,3,4
14,1,2
15,1,1
16,2,2
17,3,1
18,2,1
19,4,5
20,3,1`;
var data = d3.csvParse(csv);
var w = 250,
h = 250;
var svg = d3.select("body")
.append("svg")
.attr("width", w)
.attr("height", h);
var color = d3.scaleOrdinal(d3.schemeCategory10);
var columnScale = d3.scalePoint()
.domain(dataRange(data, 'Category1')) // or ["1", "2", "3", "4", "5"]
.range([30, w - 10])
.padding(0.5);
var rowScale = d3.scalePoint()
.domain(dataRange(data, 'Category2')) // or ["1", "2", "3", "4", "5"]
.range([30, h - 10])
.padding(0.5);
var simulation = d3.forceSimulation(data)
.force("x", d3.forceX(function(d) {
return columnScale(d.Category1)
}))
.force("y", d3.forceY(function(d) {
return rowScale(d.Category2)
}))
.force("collide", d3.forceCollide(6))
var nodes = svg.selectAll(null)
.data(data)
.enter()
.append("circle")
.attr("r", 5)
.attr("fill", function(d) {
return color(d.Category1 + d.Category2)
});
var xAxis = d3.axisTop(columnScale)(svg.append("g").attr("transform", "translate(0,30)"));
var yAxis = d3.axisLeft(rowScale)(svg.append("g").attr("transform", "translate(30,0)"));
simulation.on("tick", function() {
nodes.attr("cx", function(d) {
return d.x
})
.attr("cy", function(d) {
return d.y
})
});
function dataRange(records, field) {
var min = d3.min(records.map(record => parseInt(record[field], 10)));
var max = d3.max(records.map(record => parseInt(record[field], 10)));
return d3.range(min, max + 1);
};
svg {
background-color: floralwhite;
border: 1px solid gray;
}
<script src="https://d3js.org/d3.v5.min.js"></script>