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Posted to notifications@superset.apache.org by GitBox <gi...@apache.org> on 2022/01/31 15:09:23 UTC
[GitHub] [superset] rumbin opened a new issue #18232: [mixed time-series; time-series bar chart v2] Bar chart jumps to very narrow bars in larger time ranges
rumbin opened a new issue #18232:
URL: https://github.com/apache/superset/issues/18232
Depending on the displayed time range, the width of the bar-chart bars becomes very narrow, up to the point where the bars become nearly invisible.
The effect depends on the selected time grain, but I haven't found a pattern yet.
**I can replicate this on both, mixed time-series _and_ time-series bar chart v2.**
#### How to reproduce the bug
1. Create a diagram of type **mixed time-series** (bar chart here!) or ** time-series bar chart v2**, based on a dataset that has at least 1 year of data in it
2. Select a time range of 1 year
3. Vary the time grain between weeks and quaters
4. Activate _Data Zoom_ and play with it; alternatively reduce the time range gradually
### Expected results
The bars of the bar chart should continuously be varied according to the time grain and the time rage, so the bar-to-gap ratio is harmonic.
The old time-series bar chart may serve as a good example here.
### Actual results
The width of the bars is harmonically scaled in some time ranges, but when a certain threshold is exceeded, the bar width jumps to nearly invisible vertical lines.
The odd thing here is, that I cannot identify a pattern here:
* For **weekly** time-grain the jump is at about end of march, when the whole year is displayed.
* For **monthly** time-grain the threshold is at the beginning of march. So far so good.
* But: for **quaterly** time_grain the bars are _always_ narrow lines, although there is by far enough space now.
#### Screenshots
The first gif shows that the threshold where the bars jump from narrow to wide and back can be narrowed by both _Data Zoom_ and by changing the time range:
The second gif shows that the threshold depends on the time grain, where the few quaterly bars behave most erratic:
### Environment
- browser type and version: Chrome 96.0.4664.93
- superset version: 1.4.0
- all other versions: as defined in Superset's Docker image
- Feature flags:
```
# stable:
"THUMBNAILS": True,
"SQLLAB_BACKEND_PERSISTENCE": True,
"ENABLE_TEMPLATE_PROCESSING": True,
"DASHBOARD_CROSS_FILTERS": True,
# experimental:
"ALERT_REPORTS": True,
"ALERTS_ATTACH_REPORTS": True,
"DASHBOARD_NATIVE_FILTERS": True,
# unclassified:
"ENABLE_EXPLORE_DRAG_AND_DROP": True,
"ENABLE_DND_WITH_CLICK_UX": True,
# development:
"DASHBOARD_NATIVE_FILTERS_SET": True
```
### Checklist
Make sure to follow these steps before submitting your issue - thank you!
- [x] I have checked the superset logs for python stacktraces and included it here as text if there are any.
- [x] I have reproduced the issue with at least the latest released version of superset.
- [x] I have checked the issue tracker for the same issue and I haven't found one similar.
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