The d3.area() method in D3.js is used to return an area generator with default settings that can be further used to create areas.
Syntax:
d3.area()
Parameters: This method does not accept parameters.
Return Value: This method returns no value.
Below examples illustrate the d3.area() method in D3.js:
Example 1:
HTML
<!DOCTYPE html> <html> <head> </script> </head> <body> <h1 style="text-align: center; color: green;"> neveropen </h1> <center> <svg id="gfg" width="200" height="200"> </svg> </center> <script> var data = [ { x: 0, y: 10 }, { x: 10, y: 30 }, { x: 20, y: 150 }, { x: 50, y: 10 }, { x: 60, y: 150 }, { x: 70, y: 50 }, { x: 80, y: 190 }]; data.sort((a, b) => a.y - b.y); var xScale = d3.scaleLinear() .domain([0, 8]) .range([25, 200]); var yScale = d3.scaleLinear() .domain([0, 20]) .range([200, 25]); // Using area() function to // generate area var Gen = d3.area() .x((p) => p.x) .y0((p) => 0) .y1((p) => p.y); d3.select("#gfg") .append("path") .attr("d", Gen(data)) .attr("fill", "green") .attr("stroke", "black"); </script> </body> </html> |
Output:
Example 2:
HTML
<!DOCTYPE html> <html> <head> </script> </head> <body> <h1 style="text-align: center; color: green;"> neveropen </h1> <center> <svg id="gfg" width="250" height="200"> </svg> </center> <script> var points = [ { xpoint: 25, ypoint: 150 }, { xpoint: 75, ypoint: 50 }, { xpoint: 100, ypoint: 150 }, { xpoint: 100, ypoint: 50 }, { xpoint: 200, ypoint: 150 }]; // Using area() function to generate area var Gen = d3.area() .x((p) => p.xpoint) .y0((p) => 0) .y1((p) => p.ypoint); d3.select("#gfg") .append("path") .attr("d", Gen(points)) .attr("fill", "green") .attr("stroke", "black"); </script> </body> </html> |
Output:
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