LeeLenaleee
commented
2 months ago This is working as designed.
You need to call this.getLabelForValue(value) as described in the docs here
The [category axis](https://www.chartjs.org/docs/4.4.0/axes/cartesian/category), which is the default x-axis for line and bar charts, uses the index as internal data format. For accessing the label, use this.getLabelForValue(value). [API: getLabelForValue](https://www.chartjs.org/docs/4.4.0/api/classes/Scale.html#getlabelforvalue)Changing your tick callback to this will give the desired result:
callback: function (value, index, values) {
return index % 2 === 0 ? this.getLabelForValue(value) : '' // Affiche une étiquette sur deux
},
ClineResearch
Expected behavior
Hi! We want to display every 2 labels on the abscissa axis. These labels are character strings. If we apply this callback function: function (value, index, values) { return index % 2 === 0 ? value : '' } the labels returned are integers corresponding to the indexes of the values. The result should be the initial character string. How to fix this problem? Thanks for your responses.
Current behavior
The value labels returned are integers corresponding to the indexes of the values. The result should be the initial character string.
Reproducible sample
https://codepen.io/Jean-Fran-ois-Ramadier/pen/bGJQNxz
Optional extra steps/info to reproduce
No response
Possible solution
No response
Context
No response
chart.js version
v4.4.2
Browser name and version
No response
Link to your project
No response