chartjs/Chart.js

Specifiying a fixedStepSize for ticks should set autoSkip to false

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#4,048 opened on Mar 20, 2017

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help wantedtype: enhancement

Description

Expected Behavior

I was expecting ['Options']['scales']['xAxes'][0]['ticks']['fixedStepSize'] = 1;` to give me a step size of 1.

Current Behavior

I got the step size that chart.js had worked out (2: 40,42,44, etc.). I had to specify ['Options']['scales']['xAxes'][0]['ticks']['autoSkip'] = false; to get a step size of 1.

Possible Solution

Update the docs to mention that this needs to be done. (Easiest) Or, in the code, set autoSkip to false if you are specifying a step size

Environment

  • Chart.js version: 2.5

Contributor guide

Tech stack
javascript
Domain
frontend
Issue type
bug
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
2
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
under 1 hour
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
stale
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
clear
Prerequisites
JavaScript basicsChart.js tick configuration
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
90
Research direction
Investigate the Chart.js source code for where tick options are processed, particularly around fixedStepSize and autoSkip. Look at files such as src/core/core.ticks.js. The issue suggests either updating documentation or setting autoSkip to false automatically when fixedStepSize is specified. Check if any changes since 2017 have addressed this; if not, implement the code fix or doc update.