plotly / plotly/plotly.js

x axis label is inconsistent for different range of duration in line chart

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#7,397 1 comment 0 reactions 0 assignees View on GitHub

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bug P3
Dominant language
JavaScript
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Avg merge
2d 12h
Merged PRs (30d)
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Description

Hello,
I tried many ways to make the x axis value consistent with the time and font in line chart like using this.layout.xaxis["dtick"]= "M1"
this.layout.xaxis["tickmode"]= "auto",
tickformat= '%d-%b-%y \n %H:%M',
but nothing worked, range is picked dynamically.
layout = {
"showlegend": true,
"xaxis": {
"showline": true,
"showgrid": false,
"zeroline": false,
"automargin": true,
"tickformat": "%d-%b-%y \n %H:%M",
"tickangle": 0,
"dtick": "M1",
"tickmode": "auto",
"range": [
"2025-03-28 03:44:59.999",
"2025-03-28 03:45:00.001"
],
"type": "date",
"autorange": true
},
"yaxis": {
"showline": true,
"showgrid": true,
"automargin": true,
"title": {
"text": "abc Change [%]",
"font": {
"size": 10
}
}
},
"legend": {
"orientation": "h",
"x": 0,
"y": 2
},
"displayModeBar": false,
"margin": {
"l": 50,
"b": 45,
"t": 10,
"r": 10,
"pad": 4
}
};
config={
"scrollZoom": false,
"displayModeBar": true,
"editable": false,
"zooming": true,
"displaylogo": false,
"responsive": true
},
data=[ { "x": [], "y": [], "line": { "dash": "dot" }, "name": "Trace" }, { "x": [ "2025-03-28 03:45:00" ], "y": [ 1 ], "line": { "dash": "dot" }, "name": "X1 Leakage Current" } ]

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First steps

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Research direction

No source files or tests are named. Start by reproducing the supplied Plotly.js layout and date range, then trace the relevant axis tick-generation behavior. Done means determining whether the inconsistent labels are a library bug and, if so, adding a focused reproduction and regression test.

Written by the indexing model from the issue text.

Assessment

Tech stack
javascript
Domain
data-visualization
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
25/100

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