The step curve interpolator creates vertical and horizontal lines representing a step function. A vertical line is created for each pair of points in the dataset. For each pair of points, the vertical line is positioned at the midpoint between the x coordinate.
Syntax:
d3.curveStep()
Parameters: This method does not accept any parameters
Return Value: This method does not return any value.
Example 1:
HTML
<!DOCTYPE html> <html> <meta charset="utf-8"> <head> <script src= </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: 0 }, { x: 1, y: 3 }, { x: 2, y: 15 }, { x: 5, y: 15 }, { x: 6, y: 1 }, { x: 7, y: 5 }, { x: 8, y: 1 }]; var xScale = d3.scaleLinear() .domain([0, 8]).range([25, 175]); var yScale = d3.scaleLinear() .domain([0, 20]).range([175, 25]); var line = d3.line() .x((d) => xScale(d.x)) .y((d) => yScale(d.y)) // curveStep is used .curve(d3.curveStep); d3.select("#gfg") .append("path") .attr("d", line(data)) .attr("fill", "none") .attr("stroke", "green"); // Defining points d3.select('#gfg') .selectAll('circle') .data(data) .enter() .append('circle') .attr('cx', (d) => xScale(d.x)) .attr('cy', (d) => yScale(d.y)) .attr('r', 3); </script> </body> </html> |
Output:
Example 2:
HTML
<!DOCTYPE html> <html> <meta charset="utf-8"> <head> <script src= </script> </head> <body> <h1 style="text-align:center; color:green;"> neveropen </h1> <center> <svg id="gfg" width="200" height="200"></svg> </center> <script> var points = [ { xpoint: 25, ypoint: 150 }, { xpoint: 75, ypoint: 85 }, { xpoint: 100, ypoint: 115 }, { xpoint: 175, ypoint: 25 }]; var Gen = d3.line() .x((p) => p.xpoint) .y((p) => p.ypoint) .curve(d3.curveStep); d3.select("#gfg") .append("path") .attr("d", Gen(points)) .attr("fill", "none") .attr("stroke", "green"); // Defining points d3.select('#gfg') .selectAll('circle') .data(points) .enter() .append('circle') .attr('cx', (d) => (d.xpoint)) .attr('cy', (d) => (d.ypoint)) .attr('r', 3); </script> </body> </html> |
Output:
