Is it possible to maintain the x-axis in a fixed position while scrolling with d3.js?

I am working with a d3 matrix that has both an x and y-axis. However, my y-axis is quite long, so I want to ensure that the x-axis remains visible even when scrolling. I have tried setting the position attribute to 'fixed' using .style("position", "fixed"), but it doesn't seem to solve the issue. In simpler terms, I am looking to replicate the functionality in Excel where a row/column can be frozen.

Here is the code snippet I currently have:

  var columnLabels = svg.append("g")
  .selectAll(".columnLabelg")
  .data(columnLabel)
  .enter()
  .append("text")
  .text(function(d) { return d; })
  .attr("x", function(d, i) { return i * cellSize; })
  .attr("y", -1)
  .style("text-anchor", "right")
  .attr("transform", function(d, i) { 
      return "translate(" + i + ",-6)"
             + "rotate(300 "+ i * cellSize + " " + (-6) +")"; })


  .attr("class",  function (d,i) { return "columnLabel mono c"+i;} )
  .on("mouseover", function(d) {d3.select(this).classed("text-hover",true);})
  .on("mouseout" , function(d) {d3.select(this).classed("text-hover",false);}) 
  ;
javascripthtmlcssd3.jssvg

Answer №1

To create a sticky header at the top of the screen while scrolling, you can use a header div that remains fixed in place. By incorporating scrollmagic and some additional JavaScript, you can achieve this effect seamlessly.

One approach is to set up a container div for your column labels and make it stick to the screen's top. Here's an example:

var labelContainer = d3.select("div.label-container")

// Suppose you have already created the column labels:
var columnLabels = labelContainer
  .selectAll(".columnLabel")
  .data(columnLabel)
  .enter()
  .append("div")
  .attr("class", "label")


var controller = new ScrollMagic.Controller();

$(function() { // wait for document ready

  var scene = new ScrollMagic.Scene({
      triggerElement: "#trigger1",
      duration: 300
    })
    .setPin("#pin1")
    .addIndicators({
      name: "1 (duration: 300)"
    }) 
    .addTo(controller);
});
<div id="trigger1" class="label-container">

  <div class="label"></div>
  <div class="label"></div>

</div>
<div class="svg-container">
  <svg class="svg-viz"></svg>
</div>

If you plan on using d3 along with Scrollmagic and jQuery libraries, remember to include them:

<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.1.0/jquery.min.js"></script>

<script src="https://cdnjs.cloudflare.com/ajax/libs/ScrollMagic/2.0.5/ScrollMagic.min.js"></script>

Add indicators to visualize the scene boundaries:

<script src="https://cdnjs.cloudflare.com/ajax/libs/ScrollMagic/2.0.5/plugins/debug.addIndicators.min.js"></script>

For further details on scrollmagic pinning, refer to this link:

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