The d3.area.curve() method is used to give a curve to the area. D3.js provides several curve factories that can be used to give different curves.
Syntax:
d3.area.curve(curve_factory)
Parameters: This function accepts a single parameter as mentioned above and described below.
- curve_factory: This parameter is the type of curve to be given to the area.
Return Value: This method has no return value.
Example 1:Â
HTML
<!DOCTYPE html> <html> <head>     <meta charset="utf-8">       <script src=     </script> </head> <body>     <h1 style="text-align: center; color: green;">         neveropen     </h1>       <h3 style="text-align: center;">         D3.js | d3.area.curve() Method     </h3>       <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}];             var Gen = d3.area()           .x((p) => p.xpoint)           .y0((p) => p.ypoint/2)           .y1((p) => p.ypoint)                     // Using curveBasis           .curve(d3.curveBasis);           d3.select("#gfg")           .append("path")           .attr("d", Gen(points))           .attr("fill", "green")           .attr("stroke", "black");       </script> </body>   </html> |
Output:
Example 2:
HTML
<!DOCTYPE html> <html> <head>     <meta charset="utf-8">       <script src=     </script> </head> <body>     <h1 style="text-align: center; color: green;">         neveropen     </h1>       <h3 style="text-align: center;">         D3.js | d3.area.curve() Method     </h3>       <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}];             var Gen = d3.area()           .x((p) => p.xpoint)           .y0((p) => p.ypoint/2)           .y1((p) => p.ypoint)                     // Using curveCardinal           .curve(d3.curveCardinal);           d3.select("#gfg")           .append("path")           .attr("d", Gen(points))           .attr("fill", "green")           .attr("stroke", "black");       </script> </body>   </html> |
Output:
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