Created
March 26, 2017 12:58
-
-
Save vvoros/db00b1bc1da7f1abfe6310fe9233c3f4 to your computer and use it in GitHub Desktop.
SVG tutorial
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
<!DOCTYPE html> | |
<html> | |
<head> | |
</head> | |
<body> | |
</body> | |
<script src="https://d3js.org/d3.v4.min.js"></script> | |
<script> | |
// simple circle | |
d3.select("body") | |
.append("svg") | |
.attr("width", 50) | |
.attr("height", 50) | |
.append("circle") | |
.attr("cx", 25) | |
.attr("cy", 25) | |
.attr("r", 25) | |
.style("fill", "purple"); | |
// data bind | |
let theData = [ 'a', 'b', 'c' ]; | |
d3.select("body") | |
.selectAll("p") | |
.data(theData) | |
.enter() | |
.append("p") | |
.text((d, i) => { | |
return `${i}. item: ${d}`; | |
}); | |
// data bind to svg | |
let circleData = [ | |
{ | |
x_axis: 30, | |
y_axis: 30, | |
radius: 20, | |
color : "green" | |
}, | |
{ | |
x_axis: 70, | |
y_axis: 70, | |
radius: 20, | |
color : "purple" | |
}, | |
{ | |
x_axis: 110, | |
y_axis: 100, | |
radius: 20, | |
color : "red" | |
}]; | |
d3.select("body") | |
.append("p") | |
.append("svg") | |
.attr("width", 200) | |
.attr("height", 200) | |
.selectAll("circle") | |
.data(circleData) | |
.enter() | |
.append("circle") | |
.attr("cx", (d) => { | |
return d.x_axis; | |
}) | |
.attr("cy", (d) => { | |
return d.y_axis; | |
}) | |
.attr("r", (d) => { | |
return d.radius; | |
}) | |
.style("fill", (d) => { | |
return d.color; | |
}); | |
// path generator | |
let lineData = [ { "x": 1, "y": 5}, { "x": 20, "y": 20}, | |
{ "x": 40, "y": 10}, { "x": 60, "y": 40}, | |
{ "x": 80, "y": 5}, { "x": 100, "y": 60}]; | |
let lineFunction = d3.line() | |
.x(function(d) { return d.x; }) | |
.y(function(d) { return d.y; }) | |
.curve(d3.curveCatmullRom.alpha(0.5)); | |
d3.select("body") | |
.append("p") | |
.append("svg") | |
.attr("width", 200) | |
.attr("height", 200) | |
.append("path") | |
.attr("d", lineFunction(lineData)) | |
.attr("stroke", "blue") | |
.attr("stroke-width", 2) | |
.attr("fill", "none"); | |
// scale | |
let rectangleData = [ | |
{ "x_axis": 10, "y_axis": 10, "height": 20, "width":20, "color" : "green" }, | |
{ "x_axis": 200, "y_axis": 40, "height": 20, "width":20, "color" : "purple" }, | |
{ "x_axis": 70, "y_axis": 70, "height": 20, "width":20, "color" : "red" }]; | |
let max_x = d3.max(rectangleData, (d) => { | |
return d.x_axis + d.width; | |
}); | |
let max_y = d3.max(rectangleData, (d) => { | |
return d.y_axis + d.height; | |
}); | |
let linearScale = d3.scaleLinear() | |
.domain([0, d3.max([max_x, max_y])]) | |
.range([0, 100]); | |
d3.select("body") | |
.append("p") | |
.append("svg") | |
.attr("width", linearScale(max_x)) | |
.attr("height", linearScale(max_y)) | |
.selectAll("rect") | |
.data(rectangleData) | |
.enter() | |
.append("rect") | |
.attr("x", (d) => { | |
return linearScale(d.x_axis); | |
}) | |
.attr("y", (d) => { | |
return linearScale(d.y_axis); | |
}) | |
.attr("height", (d) => { | |
return linearScale(d.height); | |
}) | |
.attr("width", (d) => { | |
return linearScale(d.width); | |
}) | |
.style("fill", (d) => { | |
return d.color; | |
}); | |
// grouping, transformation, text | |
let container = d3.select("body") | |
.append("p") | |
.append("svg") | |
.attr("width", 250) | |
.attr("height", 250); | |
let circleGroup = container.append("g") | |
.attr("transform", "translate(80,0)"); | |
circleGroup.selectAll("circle") | |
.data(circleData) | |
.enter() | |
.append("circle") | |
.attr("cx", (d) => { | |
return d.x_axis; | |
}) | |
.attr("cy", (d) => { | |
return d.y_axis; | |
}) | |
.attr("r", (d) => { | |
return d.radius; | |
}) | |
.style("fill", (d) => { | |
return d.color; | |
}); | |
circleGroup.selectAll("text") | |
.data(circleData) | |
.enter() | |
.append("text") | |
.attr("x", (d) => { | |
return d.x_axis; | |
}) | |
.attr("y", (d) => { | |
return d.y_axis; | |
}) | |
.text((d) => { | |
return "( " + d.x_axis + ", " + d.y_axis +" )"; | |
}) | |
.attr("font-family", "sans-serif") | |
.attr("font-size", "10px") | |
.attr("fill", "grey"); | |
container.append("g") | |
.selectAll("rect") | |
.data(rectangleData) | |
.enter() | |
.append("rect") | |
.attr("x", (d) => { | |
return d.x_axis; | |
}) | |
.attr("y", (d) => { | |
return d.y_axis; | |
}) | |
.attr("height", (d) => { | |
return d.height; | |
}) | |
.attr("width", (d) => { | |
return d.width; | |
}) | |
.style("fill", (d) => { | |
return d.color; | |
}); | |
</script> | |
</html> |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment