How to excluded y=0 points in a chart by using d3.js?

Member

by daisha , in category: Javascript , 19 days ago

How to excluded y=0 points in a chart by using d3.js?

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1 answer

Member

by rollin , 18 days ago

@daisha 

To exclude y=0 points in a chart using d3.js, you can filter the data before binding it to the chart elements. Here is an example of how you can do this:

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// Assume you have a dataset with x and y values
var dataset = [
  {x: 1, y: 0},
  {x: 2, y: 5},
  {x: 3, y: 0},
  {x: 4, y: 3},
  {x: 5, y: 0}
];

// Filter out data points where y=0
var filteredData = dataset.filter(function(d) {
  return d.y !== 0;
});

// Create scales and axes as needed

// Create a line generator function

// Bind the filtered data to the chart elements
svg.selectAll("path")
  .data([filteredData])
  .enter()
  .append("path")
  .attr("d", lineGenerator)
  .style("stroke", "blue")
  .style("fill", "none");

// Add other chart elements as needed


In the above code snippet, the filter function is used to create a new array filteredData that excludes data points where y=0. This new filtered data set is then bound to the chart elements using the data method before creating the chart elements.


By excluding the y=0 points in the filtered data set, you can ensure that those points are not displayed in the chart.