Zero Ticks

Extent Ticks

This example demonstrates how to display axis ticks at the extent of a scale, showing only the minimum and maximum values along the bottom of a chart. The visualization uses an identity scale to map the domain directly to pixel coordinates within a specified width. The code relies on d3.svg.axis with explicit tickValues set to the scale's domain, rendering the result as SVG elements. A simple margin-based layout positions the axis within a 960 by 500 pixel SVG canvas.

81% match

Log Axis with Zero

A log axis with zero uses a secondary ordinal scale to render the value 0 below the main logarithmic scale, which otherwise would place zero at negative infinity. The example shows a horizontal axis with major ticks from 1e-1 to 1e4, plus a separate zero tick offset slightly to the left. It uses d3.svg.axis with a d3.scale.log for the main axis and a d3.scale.ordinal for the zero position, drawing both as SVG groups. The discontinuity is visually encoded by separating the zero tick from the logarithmic scale’s continuous range.

77% match

Tick Format

This example compares three ways to format tick labels on linear axes, each rendered as an SVG axis via `d3.axisLeft`. The left axis uses `scale.tickFormat` with an SI-prefix type (`"s"`), producing a consistent prefix across all ticks. The middle axis applies `d3.format(".0s")` directly, causing variable precision and prefix per label. The right axis uses `d3.formatPrefix(".1", 1e6)` to enforce a fixed mega-prefix, demonstrating manual control over SI formatting. The three axes share the same domain from -1e6 to 2e6.

77% match

Ordinal Tick Filtering

This example demonstrates how to filter tick labels on an ordinal axis by displaying only every other letter. A D3 v3 SVG axis renders the alphabet from A to Z, with the tick format function returning null for odd indices to hide those labels. The axis uses d3.svg.axis with an ordinal scale and rangePoints, while the text and line styling come from standard SVG CSS classes.

Ordinal Tick Filtering

This example demonstrates how to reduce clutter on an ordinal axis by selectively showing only every other tick label. The visualization renders an SVG axes with 52 letter-based categories, using `d3.scale.ordinal()` and `d3.svg.axis` with `.tickValues()` to filter the displayed ticks. The chart is generated with D3 v3, drawing black axis lines and labels in a plain HTML page.

Fork of D3 Axes - Tick Label Formatting

This example demonstrates how to format tick labels on a D3.js axis using custom tick formatting. A linear scale maps a domain of 0 to 100 to a pixel range, and an axis bottom is configured with increased tick padding and size. The axis is customized by limiting the number of ticks to four and applying a custom `tickFormat` function that appends a percent sign to each value. The resulting SVG renders the axis with labeled ticks showing the original data values with a “%” suffix.

SSubhendu Karmakar

Date Ticks

This example demonstrates how D3’s time scale and axis API can animate date tick marks as the domain’s upper bound randomly shifts. A bottom-oriented SVG axis is created with `d3.time.scale` and `d3.svg.axis`, formatting tick labels as month/day strings. Every few seconds, `setInterval` triggers a transition that updates the axis domain to a new random date, smoothly redrawing the ticks and grid lines via `.transition().duration()`. The chart uses no external data, only a generated sequence of dates between January 2 and a random day in late January, with the axis centered vertically on a 960×500 SVG canvas.

Log Axis

This example demonstrates a log-scale axis using a hard-coded domain from 0.0124123 to 1230.4, rendering tick labels with the `",.1s"` format. The visualization uses d3.v3’s `d3.scale.log` to create the logarithmic scale and `d3.svg.axis` to draw the axis with 20 ticks. The SVG output is positioned within a larger canvas using margins, and styled with CSS for font and stroke. The code does not include a data source, as it focuses solely on the axis component.