技术问询：D3.axis是否支持不等分划分及能否实现指定效果？

Hey there! Let's tackle your D3.axis questions clearly:

1. D3.axis是否支持不等分划分？ #

Absolutely! D3's axis components (d3.axisX, d3.axisY, etc.) don't force you to use evenly spaced ticks. The key lies in how you set up your scale and tick values:

• If you're using an ordinal scale like d3.scaleOrdinal, it's designed for discrete, non-uniform domains right out of the box—axes built with this scale will naturally have unequal spacing between ticks.
• For continuous scales (like d3.scaleLinear), you can manually define an array of tick values instead of relying on auto-generated evenly spaced ones. For example, passing .tickValues([0, 5, 18, 35]) will render ticks at those exact positions, creating unequal gaps between them. D3 handles all the rendering automatically once you specify these values.

2. 我想要实现下述效果，请问D3.axis能否达成该效果？ #

While you didn't include the specific effect you're aiming for, rest assured that D3.axis is incredibly flexible—most custom axis needs (including non-uniform ticks, custom labels, special tick markers, etc.) are totally achievable.

As a quick example, here's how you'd build an X-axis with unequal tick spacing:

// Create a linear scale for your data range
const xScale = d3.scaleLinear()
  .domain([0, 35])
  .range([0, 600]);

// Build the axis with manually specified unequal tick values
const xAxis = d3.axisBottom(xScale)
  .tickValues([0, 5, 18, 35]);

// Append the axis to your SVG
svg.append("g")
  .attr("transform", "translate(60, 320)")
  .call(xAxis);

If your desired effect is more niche (like custom tick lengths, rotated labels, or hiding specific ticks), you can manipulate the SVG elements generated by the axis directly using D3's selection methods. Since D3 axes are just collections of SVG groups, lines, and text, you have full control over styling and layout.

内容的提问来源于stack exchange，提问作者Jack